ZyXEL Communications P-663HN-51 Support Notes

35 All contents copyright © 2009 ZyXEL Communications Corporation. Ethernet are based on capturing the first part of the connection session, where the data would typically include the username and password. An intruder can masquerade as that user by using this captured information. An intruder who monitors the wireless network can apply this same attack principle on the wireless. ...

45 All contents copyright © 2009 ZyXEL Communications Corporation. LABEL DESCRIPTION Enable NAT Turn on NAT to translate IP addresses between two different networks, so you can have a private LAN with IP addresses that are different from the public IP addresses on the WAN. Enable Fullcone NAT This field displays when you enable NAT. In full cone NAT, all requests from the same private IP address and port are mapped to the same public source IP address and port. Someone on the Internet only needs to know the mapping scheme in order to send packets to a device behind th ...

46 All contents copyright © 2009 ZyXEL Communications Corporation.  Setup the P-663HN-51 as a DHCP Relay Configure P-663HN-51 as a DHCP Relay in Web Configurator, Advanced Setup > LAN: 4. Using the Dynamic DNS (DDNS)  What is DDNS? The DDNS service, an IP Registry provides a public central database where information such as email addresses, hostnames, IPs etc. can be stored and retrieved. This solves the problems if your DNS server uses an IP associated with dynamic IPs. Without DDNS, we always tell the users to use the WAN IP of the P-663HN-51 to access the int ...

40 All contents copyright © 2009 ZyXEL Communications Corporation. Maximum Burst Size The Maximum Burst Size (MBS) sets the maximum number of cells that the port should handle without any discards. Type the MBS here (1~1000000). MBS applies with the VBR traffic classes. Enable Quality of Service Enable the (packet level) QoS if you need to provide improved performance for certain classes of applications (like VoIP or video conferencing). Back Click this to return to the previous screen. Next Click this to go to the following screen. Then choose Connect Type as bridgin ...

81 All contents copyright © 2009 ZyXEL Communications Corporation. [cppwu@faelinux cppwu]$ telnet 192.168.1.1 Trying 192.168.1.1... Connected to 192.168.1.1. Escape character is '^]'. Password: **** ras> sys stdio 0 (Open a new window) [cppwu@faelinux cppwu]$ tftp -I 192.168.1.1 get rom-0 [local-rom] <- change to binary mode <- download configurations [cppwu@faelinux cppwu]$ tftp -I 192.168.1.1 put [local-rom] rom-0 <- upload configurations [cppwu@faelinux cppwu]$ tftp -I 192.168.1.1 get ras [local-ras ] <- download firmware [cppwu@faelinux cppwu]$ tftp -I 192.168.1.1 ...

11 All contents copyright © 2009 ZyXEL Communications Corporation. www.zyxel.com.tw) for your server (e.g., Web server) from a DDNS server. The outside users can always access the web server using the www.zyxel.com.tw regardless of the WAN IP of the P-663HN-51. When the ISP assigns the P-663HN-51 a new IP, the P-663HN-51 updates this IP to DDNS server so that the server can update its IP-to-DNS entry. Once the IP-to-DNS table in the DDNS server is updated, the DNS name for your web server (i.e., www.zyxel.com.tw) is still usable. 10. When do I need DDNS service? When ...