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IPSEC VPN between to sites

Hello,

I have tried to setup a vpn connection between two sites.
Center (A) and remote (B)
First I have had success, systems in the remote site was reachable and rdesktop running, from A to B and B to A.
One night later (next day) it is only possible to open a conection from B to A. I have restartet the firewalls and it don't solve the problem.

What could are the reason for this behavior

Regard Robert

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0 Krischeu over 18 years ago

Hi,
my problem was the MTU-Size of the vpn NOT the mtu of the networkcards and a configuration problem on the providers hardware.

I changed it to 1350 and 1420 runs fine now.
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0 Krischeu over 18 years ago

Hi,
my problem was the MTU-Size of the vpn NOT the mtu of the networkcards and a configuration problem on the providers hardware.

I changed it to 1350 and 1420 runs fine now.
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0 Robert F. over 18 years ago in reply to Krischeu

Hi,

I have found my problem.
I have had a NAT (DSNAT) rule from inside to outside (from A to internet). After changing the NAT rule to Masquerading it is working.

And the MTU setting for vpn is set to 1350 as you said.

Regards Robert
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