# Iptables rules / Ports used for Corosync

**URL:** <https://forums.suse.com/t/iptables-rules-ports-used-for-corosync/21834>\
**Category:** SLES Configure-Administer\
**Created:** [October 10, 2011, 1:06pm UTC](https://forums.suse.com/t/iptables-rules-ports-used-for-corosync/21834 "2011-10-10T13:06:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![System1](https://avatars.discourse-cdn.com/v4/letter/s/51bf81/32.png) [@System1](https://forums.suse.com/u/System1)\
**Post date:** [October 10, 2011, 1:06pm UTC](https://forums.suse.com/t/iptables-rules-ports-used-for-corosync/21834/1 "2011-10-10T13:06:02Z")

</div>

Hi all,

I am currently using High Availability Extension on SUSE Linux  
Enterprise Server 11. I have two nodes running on a cluster. I have some  
iptables inserted and as a result, the nodes sitting in the same cluster  
could not see each other. The port and multicast address indicated in  
“/etc/corosync/corosync.conf” has been added to my ip table.

I also referenced from this following URL: ‘Corosync UDP ports - Open  
SA Forum AIS Services mailing list - ArchiveOrange’  
([http://web.archiveorange.com/archive/v/yYk4BQNh1z6yXhnJUbE3](http://web.archiveorange.com/archive/v/yYk4BQNh1z6yXhnJUbE3)) that  
Corosync uses port and , which I had also added port into  
my iptable.

I also found out that there is this bug reported on Redhat Linux for HA  
(found here: [https://bugzilla.redhat.com/show\_bug.cgi?id=478401](https://bugzilla.redhat.com/show_bug.cgi?id=478401)) but not  
sure if it’s applicable to SLES 11. Any idea if I should add port 7445  
in?

Lastly, would appreciate that I can get replies on what are the other  
ports which Corosync uses that I’ve missed as listed below:

- Port in “/etc/corosync/corosync.conf” and 
- Port 7445

Thanks in advance.

Regards.

## – silentnoises

silentnoises’s Profile: [http://forums.novell.com/member.php?userid=117944](http://forums.novell.com/member.php?userid=117944)  
View this thread: [http://forums.novell.com/showthread.php?t=446413](http://forums.novell.com/showthread.php?t=446413)

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex022/uploads/suse/original/2X/5/5012ba89e3ffb5220dac47d5ea0ba032e2fe1cb6.png) [@system](https://forums.suse.com/u/system)\
**Post date:** [October 14, 2011, 7:24pm UTC](https://forums.suse.com/t/iptables-rules-ports-used-for-corosync/21834/2 "2011-10-14T19:24:16Z")

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