User manual INTELLINET 522342

Appliance Manual 1. Introduction ....................................................................... 1.1 Product Specifications ...................................................... 1.2 Benefits and Key Features .................................................. 1.3 Physical Parts and Panel of the SA............................................... 1.4 Packing List ........................................................................... 3 3 4 7 9 2. Quick Installation ....................................................................... 10 2.1 Hardware Installation ............................................................. 10 2.2 Check your PC First ............................................................... 11 2.3 Connect to the Web-Based Manager............................................. 13 2.4 Web-Based ManagerBasic Settings............................................14 3. Configuration Hierarchy ........................................................ 21 3.1 Overview of Configuration Menu ........................................ 22 4. Network Settings................................................................23 4.1 DHCP Server ..................................................................... 23 4.2 IP Alias ................................................................................. 25 4.3 Multiple NAT.............................................................................26 4.4 Route Settings................................................................. 27 4.5 DDNS .......................................................................... 28 5. FireWall Settings .................................................................30 5.1 Virtual Server Settings.................................................... 31 5.2 URL Filter Setup........................................................................32 5.3 IP Filter Setup ......................................................................... 33 5.4 Denial of Service .......................................................... 34 6. VPN Settings.................................................................34 6.1 IP Sec Settings...................................................................35 6.2 PPTP Settings...........................................................................38 1 7. System Management ............................................. 40 7.1 Administrator Settings .......................................... . 40 7.2 Event Report Settings .................................................. 41 7.3 Firmware Update ........................................................ 42 7.4 Time Settings ............................................................. 44 7.5 SNMP..................................................................................... 45 8. System Report ............................................................ 46 8.1 System Information ........................................................... 47 8.2 System Log.................................................................... 48 8.3 URL Log .......................................................................... 49 8.4 DHCP Lease Report ................................................................50 9. User Management ...........................................................50 9.1 Users ................................................................................... 51 9.2 Groups ................................................................................ 54 10. NAS Management....................................................................57 10.1 HD Initialization Wizard............................................................ 57 10.2 Advanced ..............................................................................62 10.3 File Sharing ......................................................................... 66 11. Personal Web server (some models)...................................71 12. Personal E-mail server (some models)......................................72 12. Appendix A - USB Printer Server (some models).........................74 12. Appendix B - PPTP VPN Setup................................................79 2 1 Introduction Thank you for purchasing our innovative all-in-one solution for your networking needs. The SA (Server Appliance) integrates server services such as a Network Address Translator (NAT), Virtual Private Network (VPN), SPI firewall, and networked storage into one easy to manage device. The Server Appliance allows a group of trusted computers and networks to connect quickly and safely. With the Server Appliance, network managers and users can save time in establishing some of the most common services done on servers costing thousands of dollars. 1.1 Product Specifications Connection Sharing Flexible Address Space for NAT service IP Alias Multiple NAT Virtual Private Network 20 IPSec Tunnels Available PPTP Server / Client Firewall Prevent Denial of Service (DoS) Attacks Packet/URL Filtering Access Control, Virtual Server System Management Web-based Management for Configuring System Firmware Update via HTTP Reset To Factory Settings Event Alert and Logs System Information 3 Services DHCP Client/Server Proxy DNS RIP DDNS Client FTP Server Network Programmable Static Route Network Protocols Supported: PPPoE, TCP, UDP, ICMP, ARP PPP Authentication PAP, CHAP, MS CHAPv2 Real Time Clock File Sharing Supports CIFS,SMB, Appletalk(AFP), NFS User Management Local User Account Management Power Management Support Mechanical Off/Soft Off/Sleeping/Working System States Other Features (Some Models Only) Personal Web Server USB Printer Server Personal POP E-Mail Server 1.2 Benefits and Key Features Virtual Private Network With Virtual Private Networking, an enterprise can establish a dedicated tunnel among branch offices and/or mobile employees. All data is encrypted and decrypted via the pre-defined dedicated tunnel. This prevents any hackers from stealing private information in the public network. With this functionality, any sub-network can be grouped as though they are in the same network. 4 Firewall The Server Appliance provides a powerful firewall capable of preventing hackers from attacking the gateway or internal network. Many famous DoS attacks can be detected and prevented. Whenever an attack is detected, the system will alert the network manager that an attack has occurred. The network manager can then inspect the log information to find the IP address that sent the packets. Easy Installation In order to facilitate the use of the Server Appliance, the product comes with default settings that most network managers can install it without any modification. If the network manager needs to modify any of the settings, the Server Appliance provides an intuitive Web-based user interface. Network Attached Storage Network-attached storage (NAS) is the concept of shared storage on a network. NAS transfers data using industry standard file sharing protocols such as CIFS, AFP, NFS and FTP. Files can be shared simultaneously by clients regardless of the operating system they are using or the network server they are attached to. This solution provides convenient common storage resources. Dynamic DNS Dynamic DNS allows anyone wishing to reach your host by the name only. Dynamic DNS will map that name to your current IP address, which changes each time you dial your Internet service provider. With a URL that stays the same all the time regardless of IP address your options become almost as unlimited as a normal content provider like www.indiatimes.com or www.yahoo.com. Print Server (Some Models Only) Print Server allows any computer in the network to share an USB printer. It complies with USB 2.0 specifications. And the users can print from any computer over a LAN. 5 Personal Web Server (Some Models Only) The Personal Web Server enables users to host an information type website from their appliance. Create your website and place it on the appliance for the world to see. Use it in combination with our built-in DDNS client and anyone with a broadband connection can have their very own website. Personal POP E-mail Server (Some Models Only) The Personal POP E-mail Server provides users the ability to run a personal private e-mail server. Send e-mail you're your registered domain name or just create a DDNS account and have your personalized e-mail address. FTP Server FTP is the most secure, fastest, reliable method of transferring files. The FTP server allows you full control over who can login to the server appliance, which files the user can access or they could upload data. Power Management We divide the power management function into three parts. These are Power Down, Wake On LAN and Hard Disk Standby. We'll describe each part in detail below. - Power Down We turn the power down in several ways: Power Down by Web Please select System Management -> Administrator Settings. In Power Down field, to select the enable radio button and then click the apply button. Power Down by press the power button Prompt Power Down Please press and hold the power button at least 4 seconds. -Wake On LAN The WOL function allows the remote users on the network to turn on the Server Appliance. Please note that the power adapter must be connected to 6 the Server Appliance and plugged into the power outlet. -Hard Disk Standby If the hard disk is idle for a while, we would like the hard disk to enter standby mode to reduce the consumption of power. In the left menu, select NAS Management -> HD Initialization Wizard, in HD Power Management Setting, please select the time in the `Turn Off hard disk' field (Figure 3.2a). If you select `none', the hard disk will not enter the standby mode even if it is always idle. If you select '5 mins', the hard disk will enter standby mode once it is idle for more than five minutes. Figure 3.2a 1.3 Physical Parts and Panel of the SA 1 WAN port : 10/100 Mbps WAN port MDI/MDIX switch 4 LAN ports : 10/100 Mbps USB 2.0 port (Some Models Only) Reset Button Power Button Power Jack 7 LEDs : Link/Activity LEDs for Each Ethernet Port, Power LED, Packet Transmit/Receive LEDs Power 12VDC/3A WAN Port The WAN port is used to connect to an ADSL/Cable modem for linking to the Internet. WAN MDI/MDIX Switch The WAN MDI/MDIX switch is used to adjust the cable connection of the WAN port. If the port is connected to hub, you should move the switch to the "hub" side; if the port is connected to PC like machine, you should move the switch to the "PC" side. As for the four LAN ports, there is no need to add additional switches for each cable connection. This is because the LAN ports support auto MDI/MDIX. LAN Ports The LAN ports are used to connect to a PC, server, hub, switch or other network devices on the intranet. Reset Button If you forget your password and/or IP settings, you will not be able to access the SA. You can use the Reset Button to restore the factory settings. To initiate a reset, you must hold the button for at least 5 seconds. The primary default settings are listed in the following table. Configuration Item Administrator Username Administrator Password Internal IP address Default Settings admin 172.16.1.1 8 Power Button Description Status of LEDsLED Power Heart-Beat On Off Solid/Off Flashing On WAN/LAN Link/Activity Off Flash Meaning Power On Power Off System is not working System is working Link up Link down The interface is transmitting/receiving packets The network link is 100 Mbps The network link is 10 Mbps Current transfer rate is > 10KB/s WAN/LAN On 10/100 Mbps Off 1 LED on Throughput No LED on Current transfer rate is < 10KB/s 2 LEDs on Current transfer rate is >50KB/s 3 LEDs on Current transfer rate is >100KB/s 4 LEDs on Current transfer rate is >500KB/s 1.4 Packing List Server Appliance Power Adaptor and Cable UTP cable (CAT5) User Manual CD Quick Start Guide 9 2 Quick Installation This chapter will give you brief instructions on how to install the product. In section 2.1, we will configure the hardware part of SA step by step. In section 2.2, we will check whether the IP address of your PC is assigned by DHCP. Once we complete the installation of the SA hardware and checked your PC settings, we will use the web-based management to configure the SA to suit your network environment. In section 2.3, and 2.4, we will review all the software settings. We will configure it to gain access to the Internet. If you need additional help or advanced setting details, please refer to the remaining chapters. 2.1 Hardware Installation Please follow the steps below to install hardware: 1. Get the included Ethernet cable. Connect one end of it to the ADSL/Cable modem and the other end to the WAN port on the SA. 2. Get another Ethernet cable. Connect one end of it to the PC or hub and the other end to one of the LAN ports on the SA. Turn the ADSL/Cable modem on. Note: Cable modem users MUST disconnect the cable modem from the wall outlet for at least 2 minutes before turning it on again. If there are more PCs or hubs to be connected, please repeat step 2. 4. Connect the included power adapter to the power socket on the SA and then plug the power adapter into a wall outlet. 5. Turn on the SA. If the link LED of the WAN port is not ON, switch the WAN MDI/MDIX switch to the alternate setting. The hardware installation is now complete. 10 3. 2.2 Check Your PC First Please check the following settings on your PC: Do not assign an IP address to your PC. 1. Please select sequentially: In Start menu -> Settings -> Control panel -> Network connections -> Local Area Connection. Then a 2. "Local Area Connection Status" window shows up. (Figure 2.2a) Click the Properties button in Local Area Connection Status. Then the "Local Area Connection Properties" window shows up as Figure 3. 2.2b. Select Internet protocol (TCP/IP) item and then click the Properties button. The "Internet Protocol (TCP/IP) Properties" window shows up (Figure 2.2c). Select the "Obtain an IP address automatically" radio button then click the OK button. 4. Figure 2.2a 11 Figure 2.2b ` Figure 2.2c 12 2.3 Connect to the Web-Based Manager Please follow the steps to connect to the web-based manager: 1. Open a browser on the PC that is DIRECTLY connected to the SA. Type "http://172.16.1.1" in address field. And then press Enter key. 2. An authentication window shows up to prompt you to type the username and the password. 3. Leave the username blank and type "admin" as a password. (Figure 2.3a.) 4. Then press OK button. The default web page will appear like Figure 2.3b. Figure 2.3a 13 Figure 2.3b 2.4 Web-Based Manager ­ Basic Settings Start to configure your network environment by clicking the Basic Settings in left menu. The Basic Settings page is shown as Figure 2.4a. 14 Figure 2.4a The Basic Settings page contains Network Policy, Internal Network Interface, Domain Name Server, and External Network Interface. We describe these settings below in detail. You must click the apply button after you finish inputting the settings. You will see a rebooting window as Figure 2.4b. During the rebooting phase, do not turn off or unplug the Server Appliance. 15 Figure 2.4b Internal Network Interface The default settings are: Host Name: "SA" Private IP: "172.16.1.1" Private IP Netmask: "255.255.0.0" According to the default settings, we will assign the LAN to network "172.16.1.x" You can add more detailed configurations later in section 4.1 DHCP Server settings. For the Network Address Translation (NAT) application, the private network address should be set in the following address range reserved by the Internet Assigned Numbers Authority (IANA). Class A Class B Class C Class Address Range 10.0.0.0/10.255.255.255 172.16.0.0/172.31.255.255 192.168.0.0/192.168.255.255 16 Domain Name Server Most of the time this information is not needed, as your ISP will automatically provide the information. Please ask the DNS IP address from your ISP if one is required. External Network Interface External network interface includes ADSL/PPPoE , DHCP Client and Fixed IP Address settings. Make sure that the system information webpage shows that your Link status is `Link Up'. If not, please check your connection and/or switch the MDX switch located next to your WAN port. We have to choose one of the three ways to configure the external network interface. They are illustrated as follows: Example 1: If you are connecting through a fixed IP address from the ISP. Example 2: If you are connecting through a dynamic IP address from ISP. Example 3: If you usually enter a username and password to access the Internet. Example 1: Fixed IP Address Settings 17 If you have a fixed IP address from your ISP to access the Internet, please follow the steps below: 1. 2. 3. 4. 5. Select the Fixed IP Address radio button. Enter the Public IP address. Enter the External Gateway. Enter the External Netmask. Click the apply button. Example 2: DHCP Client / Cable Modem If you have a dynamic IP address from your ISP to access the Internet, please select the DHCP Client radio button. Once the external IP address is obtained via the DHCP protocol, there is no need to give an external IP address, external gateway address or netmask. The DHCP server will dynamically assign these fields. In general, you should choose this option if you are connecting the Server Appliance to a cable modem. Note: Cable modem users MUST disconnect the cable modem from the wall outlet for at least 2 minutes before turning it on again. Some cable modem connections need you to provide specific hardware address. For the case, you should fill 18 your hardware address that you get from your ISP provider in Hardware Address field to override the original hardware address. However, it does not update the original hardware address stored in EEPROM. If you would not like to override the hardware address, you should set each field of the Hardware Address to zero "00". Example 3: ADSL Connection Most ADSL connections do not give you a fixed IP address. In this case, you must enter the user name and password provided by your ISP for authentication. Please follow the steps below. 1. Please select the ADSL/PPPoE radio button. 2. In ADSL/PPPoE Setting: Enter the User Name and Password. 3. Click the apply button to save your settings. After completing your configuration, each time the SA boots, it will try to 19 connect with your ISP and the ISP will assign the Server Appliance an external IP address. Once successfully connected, the Status field should reflect this. If the Status is still the same, check to make sure that the username, password, cables, etc. are all correct. Example 4: ADSL/PPTP Client Setting If your ISP provides a PPTP server, you could set up the PPTP client here. Please follow the steps: 1. Select ADSL/PPTP radio button. 2. Enter the user name. (You get this from your ISP) 3. Enter the password. (You get this from your ISP) 4. Enter the IP address of your host in My IP Address. 5. Enter the IP address of the server in Server IP Address. In the following chapters, we will cover more details of configuring the SA. 20 3 Configuration Hierarchy This chapter gives you an overview of all the configuration options available. The Server Appliance is a multifunction product. The section3.1 explains the corresponding settings for each function. And in section3.2, we describe the power management in detail. There are eight main categories in configuration menu, Basic settings, Network settings, Firewall settings, VPN settings, System management, System reports, User management and NAS management. Each item has advanced configurations. See Figure 3.1.. 21 3.1 Overview of Configuration Menu Figure 3.1 22 4 Network Settings When you select Network Settings in the left menu of the web page, five configuration options appear: DHCP Server, IP Alias, Multiple NAT, Route Settings and DDNS. Please refer to the corresponding section for these configurations. 4.1 DHCP Server In DHCP Server settings, we assign the rage of the virtual IP addresses for the four LAN ports of SA. All devices connect to the LAN ports of SA will be dynamically assigned the IP addresses within the range. If you wish to mix dynamic and static IP clients on your network: 23 Under DHCP server settings, the SA defaults to assigning IPs 172.16.1.2 through 172.16.1.250...So depending on how many fixed IP devices they have, they can assign their device to an IP of 172.16.1.251 (through 254) as these IPs will not be handed out by the SA. If they have more devices or want a different IP range, then all they need to do is modify the range that the SA hands out so it does not hand out an IP in that range. Typical offices set their DHCP server to assign IPs from 30 through 200. IPs 1 through 29 are usually assigned to servers and 201 and above are reserved for special uses. You can either enable the DHCP server or disable it in this screen also. To Enable the DHCP Server If you do not have a DHCP server on your network, 1. Select the Enable radio button.(already enabled by default). 2. Enter a number in Lease time field. 3. Enter the IP address range1 as "192.168.0.2" and "192.168.0.250" (default). 4. Enter the IP address range2, otherwise enter "0" in each field. 5. Enter the IP address range3, otherwise enter "0" in each field. 6. Enter the IP address range4, otherwise enter "0" in each field. 7. Click the apply button. When DHCP server is enabled, it will allow DHCP clients to obtain their network configuration from the unit. In the figure above, the IP address range of 192.168.0.2 to 192.168.0.250 is dynamically assigned to individual DHCP clients. The DHCP client may be assigned an IP address like "192.168.0.10". The IP address "192.168.0.1" cannot be assigned as it is not in the range and is also assigned to SA under Basic Settings. If you assign another network (e.g. 192.168.1.x) to IP address ranges 2, 3, 4, please refer to section 4.2 for further IP Alias setting. When no other IP address ranges are assigned, a zero value should be filled in to indicate that no other IP addresses are available for assignment. 24 To Disable the DHCP Server If you already have a DHCP server on your network, 1. Select Disable radio button 2. Click the apply button. Or you do not have DHCP server on your network, but you would like to assign a static IP address to each device connected to the LAN port of SA. 1. Select Disable radio button. 2. Assign a static IP address to each device connected to the LAN port. For example, you have four PCs, PC1, PC2, PC3 and PC4 connected to the LAN port. You have to assign a UNIQUE static IP address i.e. "192.168.0.34", "192.168.0.25", "192.168.0.18", "192.168.0.108" to PC1, PC2, PC3 and PC4 respectively. Note: The static IP addresses assigned are all in the same subnet with SA. In Basic Settings, we set "192.168.0.1" as private IP address of SA with a 255.255.255.0 subnet. Therefore, the networked PCs need to belong to "192.168.0.x". 4.2 IP Alias In Basic Settings, we've set the private IP address of SA as "192.168.0.1". We will assign the LAN ports of SA to the network of "192.168.0.x". In DHCP server settings, we've set the IP addresses of the LAN as "192.168.0.x". "192.168.0.x" includes "192.168.0.x", and therefore is considered to be in the same network. There is no problem if the network interface contains only one IP address range, but if you want to assign another IP addresses like "192.168.1.x" to the LAN, then there is an issue. "192.168.1.x" and "192.168.0.x" are not in the same network. We need IP Aliasing to resolve this issue. IP alias allows one network interface to contain more than one network. It allows the additional network "192.168.1.x" to be recognized by the SA. 25 Please follow the steps to add another network: 1. Enter "192.168.1.1" in IP Alias 1. 2. Enter "255.255.255.0" in Netmask of IP Alias 1. 3. Click the apply button. Note that the IP Alias 1, 192.168.1.1 is assigned to SA and the network is "192.168.1.x". For additional IP addresses of the internal network interface to be accepted, enter the other IP address in IP Alias 2 and IP Alias 3. Enter "0" in each field if none. 4.3 Multiple NAT If you get several fixed IP addresses from your ISP and the ISP restricts the bandwidth for each fixed IP address, you have to prevent the network 26 packets from always sending on the same IP address and the other IP address to sit idle. Multiple NAT solves this and allows you to increase the bandwidth. Multiple NAT allows you to dispatch your network packets evenly to these IP addresses provided by ISP. 1. Enter the Internal IP range1, e.g. "172.16.1.1/24". It means the network is "172.16.1.x" 2. Enter the External IP range1, the IP address range you get from your ISP. 3. Enter the Internal IP range2, e.g. "192.168.1.1/24". It means the network is "192.168.1.x". 4. Enter the External IP range2, the IP address range you get from your ISP. 5. Or enter "0" in each field for non-setting multiple NAT. 6. Click the apply button. After you configure the Multiple NAT on the group of fixed IP addresses, it can increase the bandwidth. The Internal IP range you entered will be routed to the corresponding External IP range. 4.4 Route Settings The Route Settings page gives you a way to set the static route. You have to set the static route if you would like to route your packets to the specific network and the router of the destination network does not support RIP 27 (Routing Information Protocol). If the router supports RIP, it will automatically exchange routing information with SA and it is not necessary to set a static route. Please refer the steps and figures to set a static route. 1. Select Enable radio button in Routing Setup. 2. Enter the network in Destination network column. (e.g. "192.168.6.0/24") 3. Enter IP address of the gateway in Gateway column. (e.g. "172.16.1.249") 4. Enter the number in Hop count column. The number means how many gateways you have to pass through. 5. Click the apply button. In the figures, the destination network is "192.168.6.x". And the packets will be route in or out of the destination network through the gateway "172.16.1.249". 4.5 DDNS Your Internet Service Provider (ISP) provides you at least one IP address to use when connecting to the Internet. The address you as assigned may be static, meaning it never changes, or more than likely dynamic, meaning it's likely to change periodically. How often it changes depends on your ISP. A dynamic IP address complicates remote access since you may not know your current WAN IP address when you want to access your network over the 28 Internet. DDNS provides a simple, and in most cases free, solution. The Internet uses DNS servers to lookup domain names and translates then into IP addresses. Domain names, such as www.yahoo.com, are just easy to remember aliases for IP addresses. A dynamic DNS service provides a means of updating your IP address so that you listing will be current when your IP address changes. There are several services on the Internet that are available for free. We will only cover one, www.dyndns.org. You will need to register with the service and setup a domain of your choice from the list they provide for you. The DDNS service in our device works by uploading your new WAN IP address to the servers when it changes. You would only need to enter the account information in the DDNS setup page of your unit. How to setup a DynDNS DDNS account: 1. Access the DynDNS homepage ( www.dyndns.org ). 2. If you have not registered, click `Sign Up Now' to create a new account. 3. Follow the instructions to create a free DDNS account. Requires only e-mail address. 4. Log into your account by providing a username and password. 5. Select `Services' from the top menu. 6. Select `Dynamic DNS' from the choice of services. 7. Select `Add A Host' from the `Your Hosts' section. Follow the instructions. 8. Note your hostname so you can input it in the DDNS configuration for your device. You can setup additional host names for additional devices. Please follow the steps below to setup DDNS on your SA. 1. Select Enable radio button in DDNS Client Service field. 2. Select the DDNS service provider. 29 3. Enter the User name. The user name you log in DDNS service. 4. Enter the password. The password you log in DDNS service. 5. Enter the Host name. The host name you register in DDNS service. 6. Click the apply button. Every time your public IP changes, the SA will tell the DDNS server what your new IP address is. Other users, through the magic of DDNS, will be sent to the right place. 5 Firewall Settings When you select the Firewall Settings item in left menu of the web page, four configuration items appear including: Virtual Server settings, URL Filter, IP Filter setup and Denial of Service. Please refer the corresponding section for each of these items. 30 5.1 Virtual Server Settings The virtual server service is a way to simulate multiple servers on the intranet. You have several IP addresses within your LAN. These IPs are not visible to the users from the Internet. When servers are installed in the office that need to be seen from the Internet, we establish some forwarding rules to deal with the packet from the Internet users and direct the SA to forward the specific packets to the specific IP address. Users from the Internet could be allowed to access the specific server on your LAN. You can configure different IPs to act as different virtual servers. For example, the users accessing port 21 will be directed to "172.16.2.1". "172.16.2.1" could be a FTP server. Users accessing port 80 will be directed to "172.16.2.2", an HTTP server on the LAN. For users outside the LAN, they will feel like many services are running on a single host. Please follow the steps below. 1. Select Enable radio button in Virtual Server. 2. Enter the IP address , in LAN will be set as a virtual server. 3. Select the Protocol. 4. Enter the number in Ports, the users accessing the port will be directed to the virtual server in step 2. 5. Please repeat the steps above to establish more virtual servers 31 or enter "0" in each field for none. 6. Click the apply button. 5.2 URL Filter Setup The URL Filter function is used to restrict internal hosts from accessing specific URL locations. You deny any access to the URL location specified in the Site1, Site2 ...Site10 fields. Please follow the steps: 1. Select Enable radio button in URL Filter. 2. In Site 1, please enter the URL address. 3. Please repeat the step 2 to build more URL addresses not allowed. 4. Click the apply button. If the Site1 is given as www.yahoo.com, any hosts in the intranet will not be allowed to connect to www.yahoo.com. If you do not restrict any access from intranet to Internet, please select the Disable radio button in the URL Filter. 32 5.3 IP Filter Setup The IP filter function is similar to URL Filter. It provides further restrictions in access permission. URL Filtering only blocks port number 80 (HTTP). In IP filtering, you can assign a group of IP to be restricted. You can block four individual ports or a range of ports in the same time. So the specific group of intranet hosts cannot connect to these ports. Please follow the steps: 1. Select Enable radio button in IP Filter. 2. Enter the IP address range in the format "x. x. x. x / x"(e.g. "192.168.1.0/24", you would like to restrict the IP group) 3. Select the Protocol. 4. Enter the port number in Blocked Ports No. There are four fields you can enter in any order or combination. You can enter one, two, etc. 5. Enter the range of port numbers (if any) in Blocked Port Range. In the example, if any hosts that requests information from 192.168.1.1 to 192.168.1.254 in the intranet with port number 21, 23 or from 100 to 1024 with TCP protocol, will be blocked. 33 5.4 Denial of Service It is highly recommended that the DoS Protection feature be enabled to prevent attacks on the network. However, if you allow someone to manage the router from outside or are running a web server, e-mail server, or FTP server, you should either disable Detect SYN Flood Attack or increase the TCP flow. Otherwise, the configuration web pages will not be sent smoothly. 6 VPN Settings VPNs (Virtual Private Networking) provide secure communication between two separate networks without using a dedicated leased line. In order to achieve this functionality, a secure tunnel must be built between the two sites for secure communication over the Internet. The SA supports the two most popular protocols, IPSec and PPTP. IPSec provides encryption and authentication services at the IP layer. Working at this level, IPSec can protect any traffic carried over IP unlike other encryption methods that only protect a particular higher-level protocol. PPTP (Point-to-Point Tunneling Protocol), described in RFC 2637 is a PPP-specific protocol proposed by Microsoft. The SA implements a PPTP server. The remote user can connect 34 to the PPTP server and access a local host behind the PPTP server. When you select the VPN item in left menu of the web page, IPsec and PPTP configuration options will appear. Please refer to the corresponding section for these configurations. 6.1 IPSec Settings Sometimes there is a need to transfer commercial information from a branch office through the Internet. The information being transferred cannot be sent over the Internet without encryption. The best solution for most customers is to establish a secure tunnel between the company and branch office. IPsec implements this function through the use of a "pre-share key". The pre-share key is known both in main office and branch location. Please follow the steps below to build the tunnel: In the main company side: 1. 2. 3. 4. Select the Enable radio button in IP Security. (Figure 6.1a ) Enter the Local ID. For identifying this host. Click the apply button. The IPSec Tunnel List is empty by default. Please click the "NEW" button to establish a new tunnel. You will be taken to the IPSec Settings page. It includes the IPsec tunnel settings and Remote Host Settings. (Figure 6.1b ) In IPsec tunnel setting: Enter the Connection Name. (e.g. vpn1). 35 5. The branch side has to enter the same connection name to identify the connection. 6. Select the Enable radio button in Start on Boot field. It means the connection will be established during system startup. Select the Disable radio button for none. Enter the Preshare key. The branch has to use the same Preshare key. Enter the number of hours in IPsec key Lifetime. In Remote Host Setting: If the branch has a fixed IP address "10.0.0.9". Please select the Fixed IP radio button. 7. 8. 9. 10. Enter the Remote IP. The fixed IP address of the branch "10.0.0.9". 11. Enter the Remote Subnet. (e.g. 172.17.0.0) 12. Enter the Remote Netmask. (e.g. 255.255.0.0) 13. Click the apply button. Then you would go back to the previous IPSec Setting. (Figure 6.1c ) 14. Please check the IPsec Tunnel List. In Action column, click the link up button to connect immediately, or click the remove button to remove the tunnel. At the branch side: Please repeat the steps above to create the tunnel. Note in step 9, the Remote IP field, enter the fixed IP address of the main company and the corresponding Subnet and Netmask. The Preshare Key field is a secret key that is used to identify communicating host during the phase 1 IKE negotiation. The IPSec Key Lifetime specifies how long the secret key will be exchanged. If zero value is given, it will pick up the default setting. For the Remote Host Setting, you can choose the remote type of the communication as fixed IP gateway or dynamic IP gateway. The IPSec Tunnel List displays information for each tunnel that you build. The Name field is the connection name; the Gateway field is the IP address with which we communicate; the Destination Subnet field specifies the 36 sub-network address with which we communicate; the Status field shows you whether the current link is established or not. If the current link is not established, you can click the Link Up button in the Action field to request the tunnel to be established. If you need to re-configure the setting, the Modify button will help you adjust your settings. When you no longer require the tunnel, click the Remove button and the corresponding entry will be removed from the table. Figure 6.1a Figure 6.1b 37 Figure 6.1c 6.2 PPTP Settings For most companies, the PPTP server creates a secure connection that a remote user can access a host within the company. The remote user has to run a PPTP client and connect to the PPTP server. The PPTP server has to validate the remote user as being in the User List in section 9.1. The server certifies the PPTP client with a username and password. After passing the certification, the server will assign a private IP address to the client. The remote user will be treated like a member of the LAN and can access the local hosts inside the company. Please refer to Appendix A for more details about configuring a PPTP VPN connection. To run the PPTP server on the company side, please follow the steps below: 1. In PPTP Settings page: Select the Enable button in PPTP Server field. (Figure 6.2a) 2. Enter the private IP address of the server in Server IP Address field. 3. Enter the Client IP Range. The server will assign the IP to each client within the range. 4. Click the apply button. 38 Figure 6.2a 7 System Management When you select the System Management item in the left menu, four configuration items appear including; Administrator Settings, Event Report Settings, Firmware Update, Time Settings and SNMP. Please refer the corresponding section for these configuration details. 39 7.1 Administrator Settings In Administrator settings you will find the basic administrator functions. The settings are easily modified and managed by the administrator. They are described as below: 1. New Password: the administrator could change the administrator password here. Please enter the new password you would like to change to. Note that you must fill the new password in both Password change and Password confirmation fields. If both fields are not the same, the page will not be submitted. 2. FTP Server: please select the enable radio button to establish the FTP server. Or select the disable radio button for none. 3. Confirm New Password: please enter the new password again. 4. External Admin.: This feature allows administrators to access the web based configuration menu from the Internet. The default setting for this feature is disabled for security reasons. 5. External Admin. Port: defines a port for the remote 40 administrator to connect to. 6. Restart device: This function reboots the Server Appliance. Select the enable radio button to restart SA. The default setting of the function is disabled. 7. Clear event log: This function is used to clean the system history that is listed in Event Report (section 8.2). If you choose the "No" radio button, the event record never clears even when you reboot the system. 8. Clear DHCP lease: This function is used to clean the DHCP Lease record listed in section 8.4. Please choose the "Yes" radio button to clean DHCP lease report. 9. Restore Factory default: To recover the factory settings, please choose the "Yes" radio button and the factory defaults will be loaded. 10. Click the apply button. 7.2 Event Report Settings The Event Report Setting is used to send the administrator an e-mail alert once an event occurs on the system. If you select the Disable radio button in Alarm Mail, the system will not send an alarm to anyone. To enable the function, please follow these steps: 41 1. Select Enable radio button in Alarm Mail. 2. Enter the IP address or domain name of the Mail Server. (e.g. 111.22.33.4 or mail.your.net) 3. Enter the e-mail account (e.g. admin@mail.your.net) that you want the system to send e-mail to if an event occurs. 4. Select "Normal" or "Warning" in Alert Level to indicate when to send the e-mail. If you select "normal", events with a normal level will induce the system to send e-mail to the administrator's e-mail. 5. Click the apply button. 7.3 Firmware Update In Firmware Update, the current firmware version is shown. You can select a new firmware image to update the unit. If you would like to upgrade your firmware, you should download an image for the current model and save the image on your local drive. If the image is already on your drive, please follow these steps: 1. The current Firmware version is shown as 1.06. 2. In Firmware Update, click the Browse button. A window (see Figure 7.3a) should pop-up. Please select the image file you have downloaded. After you confirm your selection, click the open button. 42 3. An update percentage is shown as in Figure 7.3b. The image will be uploaded to the Server Appliance it performs some checks on whether the image is valid. If the image is wrong, it will not be updated. Note: Do NOT shutdown the unit or remove the power source during a firmware update. Figure 7.3a Figure 7.3b 43 7.4 Time Settings In Time Settings, you can adjust the system time. The fields in Time settings are described below: 1. YY/MM/DD format. Please enter the year in the first field then select the month and date. 2. HH:MM:SS format. Please enter the hour, minutes and seconds respectively. 3. Click the apply button. Once the system time is set, the system will record the proper time for system events in the log. 44 7.5 SNMP The SNMP agent allows users with SNMP client applications to conveniently inspect the network status of SA. Please follow the steps below to setup the SNMP agent. 1. Select the Enable radio button in the SNMP Agent field. 2. Enter the Community Name. Note that the agent side and the client side must use the same community name. 3. Enter the contact information in System Contact field. For example, the phone number or the email account of the administrator. 4. Enter the location of the unit the System Location field. 5. Click the apply button. 45 8 System Reports When you select System Reports in the left menu of the web page, four configuration items appear including; System Information, System Log, URL Log, and DHCP Lease Report. Please refer to the corresponding section for these configuration items. 46 8.1 System Information The System Information displays some useful information about the system. It shows the firmware version, the system up time and the internal and external network connections. On SA, We have one WAN port and four LAN ports. The WAN port belongs to the external network interface and the LAN port belongs to the internal network interface. They are described as below: Firmware Version: 1.33 The system up time IP Address: the IP address is shown as your current setting. In Chapter 2, section 2.4, the Basic setting, we already configure the external interface in one of the three ways, ADSL/PPPoE, DHCP client and Fixed IP address. In Chapter4, section 4.1, DHCP Server, we assigned the IP address range to the internal network interface. Hardware Address: Ethernet hardware address Netmask: corresponding to the network. 47 Max. Transfer Unit: maximum bytes of a packet. Tx/Err Packets: e.g. 309/0, means you sent 309 packets and there are "0" packets with errors. Rx/Err Packets: e.g. 3573/2, it means you received 3573 packets and there are 2 error packets. Link Status: Shows the current transfer speed. e.g. 100Mbps, full duplex. The refresh button: Click the refresh button to see if anything has been updated. If your external connection is not set to a fixed IP address, you can check whether the Server Appliance has obtained an IP address after booting. If there is no external IP address, you should check your network connection or environment settings. 8.2 System Log The System Log function reports the system history. It shows the time that the event occurred, the event level and a description of the event in the 48 Message column. If there is an error, the event report will help determine where and/or what the error is. You can clear the records under the administrator settings. Please refer to section 7.1, Clean Event Log. 8.3 URL Log The URL Log function records the recent connections for each client. If you would like to view what the user is browsing, you can click the corresponding Destination URL in the rightmost column. 49 8.4 DHCP Lease Report The DHCP Lease Report function reports all leased IP provided by DHCP server. From this page, you can find out which host was assigned to which IP address. You can clear all the records through administrator settings. Please refer to the section 7.1, Clear DHCP Lease. 9 User Management NAS provides a client/server environment for users to share files over network. File sharing works by authorizing the users or groups to access folders by their username and password. When we create a new shared folder, we must create a new user/group list from the current users/groups. When a user/group tries to access the folder, the system will check the list of valid users for the folder. If the user/group is included in the list, the user/group then has permission to access the folder. The SA provides a concise interface to manage all users and groups for folder access. When 50