[Openswan Users] 26Sec to OpenSwan-1.0.3 dual-subnet routing problem

Herbert Xu herbert at gondor.apana.org.au
Mon Jun 14 09:29:50 CEST 2004


linkst8.ipsec at scriptable.net wrote:
>
>    /usr/sbin/iptables -t nat -I POSTROUTING -o $EINT -d ! $gw -j MASQUERADE

If this is the script on the 26sec machine then please try removing
the MASQUERADE rule.  Applying MASQUERADE rules on a 26sec stack
to IPsec packets results in unexpected behaviour like this.

Beware that even after you remove the entry, you should check
/proc/net/ip_conntrack has expired before pinging again.  It
can take anywhere from 1 minute to 10 minutes depending on the
type of traffic.  Alternatively you can reboot the machine to
clear the conntrack table.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email:  Herbert Xu ~{PmV>HI~} <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt


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