topic Re: IPSec VPN up but traffic stops daily in General Topics

IPSec VPN up but traffic stops daily

carlosyr — Fri, 28 Feb 2020 11:39:34 GMT

Hello all,

Since one month ago I have been experiencing some connectivity problems through a VPN IPSec raised between 2 Checkpoint firewalls in different countries. Once or twice a day the traffic stops but the tunnel remains active and I can't do anything from my side, I can disconnect an reconnect the tunnel but the problem persists. Only when the other part reset the tunnel the problem is solved.

The Checkpoint in my side has been working properly for some years with the same configuration, but since 2 months ago we are experiencing this issue daily and we don't know where is the problem.

When we face one of this issues, tcpdump shows packets going out from our Checkpoint but no response coming back. The other side reports the same, so we don't know where it is the problem.

Can you help me?

Thanks in advance.

Re: IPSec VPN up but traffic stops daily

Benedikt_Weissl — Fri, 28 Feb 2020 16:04:16 GMT

Any errors in smartlog?

Re: IPSec VPN up but traffic stops daily

Jeff_Engel — Fri, 28 Feb 2020 21:45:18 GMT

Which version and jumbo are you running?

Re: IPSec VPN up but traffic stops daily

PhoneBoy — Sat, 29 Feb 2020 04:30:34 GMT

I would confirm your IPsec settings in the community match precisely.
I expect some of the timers may be not set consistently on one end or the other.

Re: IPSec VPN up but traffic stops daily

Timur — Tue, 02 Nov 2021 07:00:51 GMT

Hello Carlosyr. Did you find a solution to the problem?

I have the same issue. IPSec VPN between two checkpoint in different counties.

Some times we stop receiving replies from the remote side, but the remote side still getting our requests through the tunnel.

The time is various. It can work for a week, and stop working for a day.

Re: IPSec VPN up but traffic stops daily

Igor_Demchenko — Wed, 05 Apr 2023 13:33:42 GMT

We are currently facing a similar issue.

Any news?