Hi,
>
> My setup is as shown below.
> PC--------Router---------ISP
>
> I established a connection with the ISP (PPP link) and I am pinging
> google.com from LAN side host.
> Now if I disable WAN
What do you mean exactly ?
I have an option of enabling/disabling the WAN interface from the WEB interface of the Router.
> (leave the ping running) and then enable it, the
> session does not resume.
What session ?
The PING session which was running earlier, does not resume after my WAN is up
> The SNAT rules are in place.
> # iptables -t nat -L POSTROUTING -n -v
> Chain POSTROUTING (policy ACCEPT 13927 packets, 458K bytes)
> pkts bytes target prot opt in out source destination
> 0 0 SNAT all -- * ppp0 0.0.0.0/0
> 0.0.0.0/0 to:xx:xx:xx:xx
Is the public address fixed or can it change at each PPP connection ?
The public IP can be configured for both static and dynamic addresses.
> # cat /proc/net/ip_conntrack | grep icmp
> icmp 1 29 src=yy:yy:yy:yy dst=64.233.167.99 type=8 code=0 id=16446
> packets=575 bytes=48300 [UNREPLIED]
> src=yy:yy:yy:yy dst=192.168.10.100 type=0 code=0 id=16446 packets=0
> bytes=0 mark=0 use=1
> yy:yy:yy:yy being the IP address of the LAN host.
I doubt that the source address of the expected reply is the LAN host
address. What is 192.168.10.100 ?
It's my mistake in putting the conntrack entry.... :(
The correct entry is
# cat /proc/net/ip_conntrack | grep icmp
icmp 1 29 src=yy:yy:yy:yy dst=64.233.167.99 type=8 code=0 id=16446
packets=575 bytes=48300 [UNREPLIED]
src=64.233.167.99 dst=yy:yy:yy:yy type=0 code=0 id=16446 packets=0
bytes=0 mark=0 use=1
yy:yy:yy:yy being the IP address of the LAN host.
After little bit of experimenting, I could see that if I flush all the conntrack entries,
as soon as my WAN is enabled, the PING session continued.
But flushing all the conntrack entries, doesn't look like a feasible one.
Is there a way to flush the conntrack entries that have been created during a specific interval.
Any thoughts.
Thanks,
Kiran
