rexec and Firewall1

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01-04-2008, 09:39 PM

snogfest hosebeast

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rexec and Firewall1

I am trying to implement NIM.
It stuns me that IBM like to use the "r*" commands, NFS and tftp;
hardly renowned for their good security!
However, I have managed to get rlogin, rsh and NFS to work.
I am having issues with rexec.

I can get rexec to run with "rexec -a" from my 5.2 NIM master to my
4.3 NIM client, but this is of little use, as I need it to run the
other way around for the Client Configuration.
My Firewall admin' assures me we have all the rules burnt, and the
fact that I can go one way, but not the other, tends to back that up.
When I try to initiate a manual rexec from 4.3 to 5.2 I just get a
hang.
Doing some "netstat -an"s shows me that the reply port is way up in
the 63k+ range (and decrement by 1 each time ?!), but my problems
appear to be with STDERR or STDOUT ?

The "-a" option on 5.2 appears to resolve this STDOUT/STDERR issue.

Has anyone seen this problem and overcome it ?
IBM, of course, have pointed out that 4.3 is no longer supported;
well, I already knew that, guess why I'm upgrading using NIM !

Cheers
Henry

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rexec and Firewall1