IPSEC works after changing IP of computer!

[jimvam]

Hello! I am a certified Mikrotik tech and work with Mikrotik routers for about 5 years now! Recently I came across something very odd! I have done a successfull connection with ipsec between 6 hotels using the same ipsec setup but in one hotel I keep having this problem. After some hours the computer cannot access the internal server of the central hotel. Ipsec is not broken link remains established. It will only work if I change the IP of the computer via mikrotik or manually for some hours again or even some days until it will be stuck again and needs to change the ip. It is very odd and I have checked the settings and also made some changes on the proposals and peers but still the same. It is like it gets blacklisted! No rules on firewall are interfering both ways!

So any tips where to look? Do you need the config?

[CZFan]

Will need more info, the config of both MT’s will be a good starting point, but also some additional troubleshooting results, i.e. what happens when traceroute from pc to server, does it try to go via internet, does it reach the other network, can it reach any other devices on the other side, etc

[jimvam]

Hello my friend. They told me again that it dropped but the ip was already changed and couldn’t perform the traceroute test. I did though anyway. One pc get the ip but the other pc also has the hostname. I can see also other devices like a server properly.

[CZFan]

You need to do troubleshooting while having problem.

Also, I suggested in y previous post for to to provide the config said of both Mikrotiks.

Without any information it is useless to try and help