[CentOS] SSH problems (from the beginning)

Tue May 2 20:53:03 UTC 2006
centos at centos.org <centos at centos.org>

I have 2 machines, one with CentOs4.3 (A) the other with WhiteBox 4(B).
The machine A have a new installtion, the machine B has an already exists installation.
The machine A has the installytion as is (except tah i choose an IP adress for eth0) 200.118.115.241 from the graphical interface on Hosts Label
The machine B has eth0 and eth1, it works as proxy
i can connect by ssh from A to B
i can ping B from A
i can not connect by ssh from B to A
i can`t ping  A from B
if i do NSLOOKUP in A the reponse is Server inexistent

What im doing bad?

-----------------------------------------------------------
Sign up and get your 30GB webmail at www.30gigs.com now!
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.centos.org/pipermail/centos/attachments/20060502/7db4721d/attachment-0004.html>