Firewall to other machines open


 
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Old 08-25-2005
Firewall to other machines open

Hi,

I am relatively new to UNIX. From the UNIX machine is there anyway of finding out to what and all other machines is the firewall open.
We usually do telnet <machine_name> <port> to fidn out if the firewall is open. Is there anyway i can get an entire list.

Thanks
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RWHO(1) 						    BSD General Commands Manual 						   RWHO(1)

NAME
rwho -- who is logged in on local machines SYNOPSIS
rwho [-a] DESCRIPTION
The rwho command produces output similar to who, but for all machines on the local network. If no report has been received from a machine for 11 minutes then rwho assumes the machine is down, and does not report users last known to be logged into that machine. If a users hasn't typed to the system for a minute or more, then rwho reports this idle time. If a user hasn't typed to the system for an hour or more, then the user will be omitted from the output of rwho unless the -a flag is given. FILES
/var/spool/rwho/whod.* information about other machines SEE ALSO
finger(1), rup(1), ruptime(1), rusers(1), who(1), rwhod(8) HISTORY
The rwho command appeared in 4.3BSD. BUGS
This is unwieldy when the number of machines on the local net is large. Linux NetKit (0.17) August 15, 1999 Linux NetKit (0.17)