Andy Chan wrote:

>Dear all,
>
>My m0n0wall-to-m0n0wall IPsec VPN is not stable enough. It always disconnect in 5 hours. But the
Internet connection is normal. both site can connect to Internet.
>
>Best Regards,
>Andy
>  
>
Check your SA lifetime. Increasing it should allow you to stay connected
longer. You could also try using a ping utility on one side to ping the
other side every X seconds to keep traffic moving. Sometimes VPN
connections won't reestablish themselves until traffic needs to get to
the other side.