[olug] Newbie question

[Jack]

Thanks to all for your suggestions.
    To Recap:

    I'm running Mandrake 2006 on a 2.8MHz AMD Sempron and Mandrake 10.2
on an 800 MHz Athlon and I can't figure out how to get access to one 
from the other.
    I took the shorewall off both computers and started up IPTables on the 2.8 MHz.  Now I can ping each from the other, and my Linksys router sees them both. However, neither will connect to the other using telnet, the error message being "connection refused..."
	Also, the commands 'ip addr' and 'ifconfig' both return the address 192.168.1.213 for the 2.8 MHz and 192.168.1.214 for the 800 MHz.  My Firefox web browser, however, tells me that the IP address of the 2.8 MHz is 192.168.1.214 and the 800 MHz is 192.168.1.213 (note the reversal!). I have different pages on each so I can tell them apart.
	Any ideas for how to convince each box to accept a connection?

	Jack