EFW after a of days begin to drop connections

[Guest]

[Lorenz1974]

Dear All,

I have two EFW 2.5.1 that are placed under two routers (EFW01 in the main office, EFW02 in the branch office); routers manage a VPN between two offices; in the main office there is a DC (SRV01) in the branch office there is a member server (SRV02).

Everything go well but after a  of days EFW02 begins to drop some packets between the two server (EFW02 drops packeys from SRV02) and the server form the main office (SRV01) cannot comunicate anympre with the branch office' server (SRV02). Branch office server can always ping main office server.

Session dropped are tipically for destination ports 53, 88, 443, 389.

I know, information are few but have anyone some ideas?

Thanks.

L