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Telnet got timed out

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7 replies

by gabriel5478

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Have an AIX box at a customer site. I was trying to use it's IP address to telnet into it but failed all the time. I'm using a pc running window 2k.

Tracert and ping to this AIX box works fine and I was told customer also has extra delay telneting into the box from their end (but they succeed).

The IP address, resolv.conf configured and default gateway are fine. What else should I check?

thanks

7 replies

by ghislain.levesque

Maybe you could verify cabling between server&the switch. Monitor the port the server is plug into, to see if there's some collisions/errors. Try changing port in the switch also plug in the wall. Was it working fine before or always like that?. Is there any patches added to the server? Is there any runaway process? Is the network card and the switch port is configure the same way...( like full duplex on both side, 100 Mbps both side etc.)

by why

Seen something similar ...

Turned out to be lack of in.arpa reverse lookup dns file for the subnet the client machine was in. Didn't need anything other than SOA entry in it, but if it wasn't there at all, then dns timeouts before things decided to happen.

by draegor

Check to see if there's a second firewall involved. We had opened our fw up for a vendor who could also ping and tracert, but a second fw closer to the "outside" had telnet blocked. We had to put in a special request to open it up so the vendor could get to our DMZ.

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