- Macsense PalmRouter User's Manual

Advanced configuration

Filter

In this part of the Intranet Setting menu, the IP Address Filter prevents

up to 5 local network clients from accessing certain services on the Internet

via the PalmRouter Elite. The specific types of Internet services to be filtered

are based on the TCP port numbers which these services use for communica-

tion.

Some well-known TCP port numbers are listed below:

Port number Service name

21 FTP

23 Telnet

25 SMTP

53 DNS

70 Gopher

80 HTTP

110 POP3

161 SNMP

Up to 5 TCP ports can be specified on the Filtered Private Ports setting.