I run a very small office network connected to the Internet by a
Debian station. The Debian stores the mail and offer web access using
squid as a proxy server (no masquerading).
Inside my network I use private addresses 192.168.1.x .
For the security reasons I want to block POP3 access from outside.
I tried something like:
#ipchains -A input -p tcp -s ! 192.168.1.0/255.255.255.0 --dport 110 -j DENY
... but without any luck.
Could somebody please give me a hint ?
Minta Adrian - YO3GIH phone: +401.683.66.52