Here is my output from iptables-save:
:PREROUTING ACCEPT [27179:4272858]
:POSTROUTING ACCEPT [16:1385]
:OUTPUT ACCEPT [1108:71364]
-A POSTROUTING -s 192.168.122.0/255.255.255.0 -j MASQUERADE
-A POSTROUTING -o eth0 -j MASQUERADE
# Completed on Wed Sep 17 10:06:31 2008
# Generated by iptables-save v1.3.5 on Wed Sep 17 10:06:31 2008
:INPUT ACCEPT [62014:18360950]
:FORWARD ACCEPT [17874:8946362]
:OUTPUT ACCEPT [13921:2216511]
-A INPUT -i virbr0 -p udp -m udp --dport 53 -j ACCEPT
-A INPUT -i virbr0 -p tcp -m tcp --dport 53 -j ACCEPT
-A INPUT -i virbr0 -p udp -m udp --dport 67 -j ACCEPT
-A INPUT -i virbr0 -p tcp -m tcp --dport 67 -j ACCEPT
-A FORWARD -d 192.168.122.0/255.255.255.0 -o virbr0 -m state --state
RELATED,ESTABLISHED -j ACCEPT
-A FORWARD -s 192.168.122.0/255.255.255.0 -i virbr0 -j ACCEPT
-A FORWARD -i virbr0 -o virbr0 -j ACCEPT
-A FORWARD -o virbr0 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -i virbr0 -j REJECT --reject-with icmp-port-unreachable
-A FORWARD -s 192.168.122.10 -m physdev --physdev-in vif2.0 -j ACCEPT
-A FORWARD -p udp -m physdev --physdev-in vif2.0 -m udp --sport 68
--dport 67 -j ACCEPT
On Wed, 2008-09-17 at 13:29 -0400, David Dyer-Bennet wrote:
> On Wed, September 17, 2008 12:22, Josh Mullis wrote:
> > I actually expected to see some different rules than what I have.
> > Not sure what I need to add.
> > Here are my current tables.
> > (Spaces replaced with -'s for formatting)
> > iptables -L
> Try iptables-save to see *all* the tables (in an incompatible format).
> I'm still struggling with my own setup (with similar goals and
> constraints, xen + lvs NAT), but once I got packets directed in, they
> back out okay.
> The default route on each of the realserver "systems" (quotes to
> remind us
> that they may be xen guests not physical systems) needs to be set to
> private net virtual IP of the LVS system -- I've deleted enough
> reading up
> to here that I can't now go back and check if you have that set right.
> And the LVS NAT works *only* for packets routed in by the LVS; the
> realservers can't initiate outgoing connections beyond the private LAN
> (unless you turn on ordinary NAT on the LVS, which is not the same
> as LVS NAT).
> David Dyer-Bennet, dd-b@xxxxxxxx; http://dd-b.net/
> Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/
> Photos: http://dd-b.net/photography/gallery/
> Dragaera: http://dragaera.info
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