Hi Dave,
due to be a firewall installed in the same box that your services you
should open those ports:
http input 80/tcp If you have a web server
http output 80/tcp For surf from this box and/or dowload via http
https input 443/tcp If you have a secure web server
https output 443/tcp For surf from this box and/or get/post https
dns input 53/tcp Domain Name Service to the internet
dns input 53/udp Domain Name Service to the internet
dns output 53/tcp To query internet Domain Name Servers
dns output 53/udp To query internet Domain Name Servers
smtp input 25/tcp To allow others to inject mail in your server
smtp output 25/tcp To allow send mail to remote smtp servers
pop3 input 110/tcp To allow others/you to check mail in your box
imap4 input 143/tcp To allow others/you to check mail in your box
-- input icmp To allow your box to be ping'ed and route'ed
-- output icmp To allow ping & route from your box to internet
if you have more doubts just dropm a mail.
best regards,
Dave Miller wrote:
> This is a multi-part message in MIME format.
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> [ Picked text/plain from multipart/alternative ]
> Hello –
>
> I am running Exim 4.2 on a RH 7.2 machine. I use iptables with the input
> chain set to drop and rules to open port 25 to all traffic, allow any
> service on the machine to access dns, etc. I can receive mail with the drop
> policy in place but when I try to send non local mail Exim times out. Do I
> need to open additional ports for Exim? If yes, which ones? If no, any ideas
> on why the time out?
>
> Thank you.
>
> --
>
>
> --
>
> ## List details at http://www.exim.org/mailman/listinfo/exim-users Exim details at http://www.exim.org/ ##
>
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___________________________________________________________________
Jonathan Gonzalez - SureStorm.com Security Site - Madrid/MA/SPAIN
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