Re: telnet long to offer login

laulau wrote:

I'v ruled out DNS, since using IP adresses has no effect (better or
worse) on this. Using another client (like puTTY), or even SSH instead
of telnet, also has no impact.

You ruled out DNS problems on theclient side, I suppose you tried :

telnet 1.2.3.4

.... and it didn't make any change. But telnet server might make a reverse DNS lookup of the client's IP. The delay is because DNS responds slowly, either because it is slow or nonexistent or because it forwards requests to some other DNS servers. As a quick try just add the Winsnooze IP address to /etc/hosts file on the telnet server and try if you can connect quickly. If the problem disappears then this is the cause. Then either leave the Winsnooze IP address in /etc/hosts and manage it's changes by hand or add it to appropriate DNS server's zone.

The other possible cause: ident lookups. I don't know if the telnetd in Tru64 Unix does this and as a matter of fact modern services don't use it: the server might check by ident protocol who is the authenticated client process owner (on the client side). It might be that your Unix/Linux boxes run identd (unlikely) or the reject the connections immediately, as oposed to Winsnooze box which does i-dont-know-what. If the first metnioned trick with the /etc/hosts file doesn't work - try to add to packet filter on the telnet server stating that outgoing packets directed to ident port should be rejected immediately (not dropped silently, but rejected with icmp port unreachable). I cannot guide you through this, because I am new to Tru64. Ident port number can be found in /etc/services .

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