Packet Filter; Port Filters - Planet ADSL VPN/Firewall Router ADW-4200 User Manual

PLANET ADSL VPN / Firewall Router

3.6.3.4.2 Packet Filter

When you click Packet Filter, you get the following figure.
You may configure to filter inbound (incoming) and outbound (outgoing) packets based
on port or IP address.
If it is based on port, click Port Filters for more options. You may filter the packets based
on PORT and packet type (TCP or UDP or any). For example, the protocol number 1
means ICMP. You may enter 1 to protocol number of Raw IP Filtering web page. Port
ranges are supported.
If it is based on IP address, click Address Filters for more options. You may enter the IP
address and again to select the inbound or outbound packets.
For example, to allow TCP packet, port 0 to 1000 passing router between WAN and
LAN and blocks host IP address, 192.168.1.100. Then you have to configure the port
filter à add TCP filter > 0 to 1000 and ALLOW in both direction. Then click address filter
à add address filter à enter host IP 192.168.1.100, subnet mask 255.255.255.255 (for
this single host) and both direction.

3.6.3.4.2.1 Port Filters

The pre-defined port filter rules for high, medium and low security level are listed below.
When user enables Firewall Security feature for high, medium or low security level, the
Block WAN Request function (Ping packet) is enabled automatically.
Application Protocol
HTTP(80) TCP(6)
DNS (53) UDP(17)
DNS (53) TCP(6)
FTP(21) TCP(6)
Telnet(23) TCP(6)
SMTP(25) TCP(6)
POP3(110) TCP(6)
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Port Number Firewall - High
Start End Inbound
80 80 NO
53 53 NO
53 53 NO
21 21 NO
23 23 NO
25 25 NO
110 110 NO
Firewall - Medium
Outbound Inbound Outbound Inbound
YES NO
YES NO
YES
NO
NO NO
NO NO
YES NO
YES
NO
Firewall - Low
YES NO
YES YES
YES YES
YES NO
YES NO
YES NO
YES
NO
Outbound
YES
YES
YES
YES
YES
YES
YES