[lvs-users] lvs masq response package not getting picked up

Klavs Klavsen kl at vsen.dk
Mon Aug 13 14:05:35 BST 2012

Graeme Fowler said the following on 08/13/2012 02:11 PM:
> You're using LVS-NAT. The only place the VIP is present in the usual
> usage of this is in the external (client-facing) interface of the
> director.
Ok. thank you for clarifying. So the external Ip would be in the OUTPUT 
chain, and I could filter more specificly there (unless I get state 
working - which would be preferable :)

>> Also - for some reason there's no state - so I had to allow ALL packages
>> with source-port of 80 or 443 in the FORWARD chain.
> ipvs works in tandem with netfilter (is part of it nowadays,
> effectively), so state is recorded in the usual way in the conntrack
> tables. If yours isn't, then you may be using an old enough kernel that
> this doesn't happen or you don't have the appropriate netfilter modules
> loaded.

It's CentOS 6 - 2.6.32-220.el6.x86_64

Is that too old?

These modules are loaded:
nf_conntrack_ipv4       9506  4
nf_defrag_ipv4          1483  1 nf_conntrack_ipv4
nf_conntrack_ipv6       8748  2
nf_defrag_ipv6         12182  1 nf_conntrack_ipv6
nf_conntrack           79453  3 nf_conntrack_ipv4,nf_conntrack_ipv6,xt_state
ipv6                  322029  38 

Thank you for your help.

Klavs Klavsen, GSEC - kl at vsen.dk - http://www.vsen.dk - Tlf. 61281200

"Those who do not understand Unix are condemned to reinvent it, poorly."
   --Henry Spencer

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