Linux Firewall on FC1

[Edward]

usmany at excite.com wrote:

> Thanks guys for helping and advicing me on how to go about setting my DNS and DHCP on my previous post, now I need more insight on above.
> 
> What are the things needed, accept/activate on above, i.e. firewall. Fisrt, I rejected accepting ICMP while others are accepted...
> 
> Can someone help advice on what will be accepted and rejected on the firewall?

I reject the following ports:

icmp
SSH (22)
FTP (21)
Telnet (23)
SMTP (25)
Finger (79)
POP (110)
Ident (113)
Windows NetBIOS (137-139)
IMAP (143)
NT/2000 SMB (445)
SOCKS (1080)
PPTP (1723)
uPnP (5000)
PCAnywhere (5631)
Remote Grab (7000)

The rest are accepted only when a connection has been established FROM 
my PC (conntrack module).

Just to give you an idea.

Regards,
Ed.