[CentOS] Ports require to do yum update?

Wed Feb 22 19:33:42 UTC 2006
Johnny Hughes <mailing-lists at hughesjr.com>

On Wed, 2006-02-22 at 12:20 -0500, James Pifer wrote:
> I have a couple CentOS boxes running in our DMZ and although they are
> running behind a firewall, I'm also running iptables. One thing I cannot
> do it yum update. What ports are required for this? I have outbound http
> open and I can browse to sites using firefox. 
> If I run an ethereal scan the process seems to stop with DNS queries,
> but I can resolve mirrorlist.centos.org without a problem. Anyone know
> what the problem could be?
> If I stop iptables everything works of course.

I depends on the server, but either outbound to port 80 or outbound to
port 21 (for ftp).
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