now we connected 2 hosts directly, via cross cable and everything is working!
Perhaps some problem with router, have you any guess?
there is just only one router, and it doesnt have any special restrictions on type of traffic, but its rather strange coz ping takes quite long time to reply, and i do not observe any SYN packets in tcpdump when i try to connect via ssh...
what can be the problem?
other hing is that usually you can connect using ip or dname.
when i try to connect to host 1 using its dname its ok and with IP its also ok, but from host 1 to host 2 its problem of IP and dname cannot be resolved as well: no route to host, though i specified it in dns table...
may be i need some more packages to download ?