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

àadd 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

Port Number

Firewall - High

Firewall - Medium

Firewall - Low

 

 

Start

End

Inbound

Outbound

Inbound

Outbound

Inbound

Outbound

 

 

 

 

 

 

 

 

 

 

HTTP(80)

TCP(6)

80

80

NO

YES

NO

YES

NO

YES

DNS (53)

UDP(17)

53

53

NO

YES

NO

YES

YES

YES

DNS (53)

TCP(6)

53

53

NO

YES

NO

YES

YES

YES

FTP(21)

TCP(6)

21

21

NO

NO

NO

YES

NO

YES

Telnet(23)

TCP(6)

23

23

NO

NO

NO

YES

NO

YES

SMTP(25)

TCP(6)

25

25

NO

YES

NO

YES

NO

YES

POP3(110)

TCP(6)

110

110

NO

YES

NO

YES

NO

YES

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