 | | | Trying to register a Enterprise 2.1 system | Trying to register a Enterprise 2.1 system 2004-04-30 - By Michael Schwendt
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On Fri, 30 Apr 2004 17:23:22 -0400, Margaret Doll wrote:
> I have
>
> -A input -p tcp -s 0/0 -d 0/0 0:443 -y -j ACCEPT
> -A input -p tcp -s 0/0 -d 0/0 443 --syn -j ACCEPT
>
> inserted in /etc/sysconfig/ipchains.
>
> netstat -natp | grep 443
> tcp 0 0 0.0.0.0:443 0.0.0.0:*
> LISTEN 1418/httpd
>
>
> How do I see outgoing ports? How do I open a port as outgoing?
You're on the right track, but you need more understanding of TCP/IP
networking. Above, in the INPUT chain of netfilter, you allow _incoming_
packets, i.e. packets coming in from the network to your machine. To
access Red Hat Network, you want outgoing packets _and_ their reply
packets to be permitted. That means, allow access to destination port
"https" in the OUTPUT chain and allow packets coming in from source port
"https" in your INPUT chain. Alternatively, read up on state-based
filtering (man iptables > MATCH EXTENSIONS > state,
http://www.netfilter.org)
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