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- <li><em>date</em>: Sat Jan 17 16:42:11 2004</li>
- <li><em>from</em>: dmcnash at charter.net (Doug McNash)</li>
- <li><em>in-reply-to</em>: <[email protected]></li>
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- <li><em>subject</em>: [ale] NTP and 'ipchains'</li>
But,alas, udp is connectionless so you need the explicit rule.
On Sat, 2004-01-17 at 16:10, John Mills wrote:
> ALErs -
>
> I'm running RH-7.3 and 'ipchains'. My LAN sits behind a firewall/router
> that forwards only port 22 to serve incoming SSH. In order for 'ntpdate'
> to successfully connect to outside servers, I had to add an 'ipchains'
> rule:
> -A input -s 0/0 -d 0/0 123 -p udp -j ACCEPT
>
> I didn't have to forward this port back through the router/firewall,
> however.
>
> Was it normal to need such a rule when I don't need rules to pass other
> sorts of replies, such as responses to telnet and http inquiries to other
> hosts?
>
> Thanks for any background on this.
>
> - John Mills
> john.m.mills at alum.mit.edu
>
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> <a rel="nofollow" href="http://www.ale.org/mailman/listinfo/ale">http://www.ale.org/mailman/listinfo/ale</a>
--
doug mcnash
</pre>
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<li><strong><a name="00692" href="msg00692.html">[ale] NTP and 'ipchains'</a></strong>
<ul><li><em>From:</em> johnmills at speakeasy.net (John Mills)</li></ul></li>
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