ZyXEL Communications P-202 - Manual (Page 10)

P-202H Plus v2 Support Notes
• Deny packets from the outside that claim to be from the inside
• Allow everything that is not spoofing us
Filter rule setup:
• Filter type =TCP/IP Filter Rule
• Active =Yes
• Source IP Addr =a.b.c.d
• Source IP Mask =w.x.y.z
• Action Matched =Drop
• Action Not Matched =Forward
Where a.b.c.d is an IP address on your local network and w.x.y.z is your netmask:
For the outgoing data filters:
• Deny bounceback packet
• Allow packets that originate from us
Filter rule setup:
• Filter Type =TCP/IP Filter Rule
• Active =Yes
• Destination IP Addr =a.b.c.d
• Destination IP Mask =w.x.y.z
• Action Matched =Drop
• Action No Matched =Forward
Where a.b.c.d is an IP address on your local network and w.x.y.z is your netmask.
16. What is DNS proxy?
If enabled, DNS Proxy allows the P-202H Plus v2 to act as the DNS server for
the local network. The P-202H Plus v2 gets the IP address of the actual DNS
server from the remote site via IPCP negotiation. Note this feature only works if
the remote site supports RFC 1877.
How do I turn on DNS Proxy?
DNS Proxy is enabled only if the selection of the DHCP field under DHCP Setup
in Menu 3.2 is Server and the Primary DNS Server is set to 0.0.0.0. (this is the
factory default). If the DNS Proxy is enabled, the P-202H Plus v2 will assign its IP
address as the Primary DNS in the responses to DHCP requests on the local
network.
All contents copyright © 2006 ZyXEL Communications Corporation.
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