>>Hello all,
>>I've established IPSec tunel between remote, and central office.
>>Simple question: Ping from central office to remote office works in
>>both directions, but no other data flows. I've tried ping with bigger
>>packets (600 - 1200 byte) not working. When I use dummy windows
>>machine to connect to remote office ISP everything works great. Please
>>help me! Routing is OK, which is not a problem! Is it a problem with
>>MTU value or....
>>
>>

Hi,

Did you try to allow fragmented packets (LAN default pass rule)?

FYI: I had the same problem but it "disappeared" when I switched to 
version 1.2b3 (or 1.2b2 I can't remember)...

-- Vincent