iX 6.0)

52 Chapter 3

Telnet Service

Troubleshooting Telnet

This section explains the kinds of errors that may arise regarding the

operation of Telnet. The Telnet client user will, in all but one case, be

alerted about the problem directly; an error message will appear on the

client's terminal. You, as system manager of the host system may

receive phone calls from client asking you to investigate the problem.

Problem Explanation

Unknown service This message will be written to $STDLIST for

JINETD.NET.SYS when a Telnet client is unable to

ﬁnd the Telnet entry in the services ﬁle. Telnet client

users may see a similar message on their terminal,

and call you, the system manager of the host, to

resolve the problem. Open the services ﬁle and make

sure that the line telnet 23/tcp exists. If

necessary add the line and then reconﬁgure the

Internet daemon. For more information, read

“Editing the Services File” earlier in this chapter.

The Telnet client

cannot run Telnet

The Telnet client user may not have entered the

correct program name at the prompt, which is

TELNET.ARPA.SYS. Or, there may be problems with

the network.

The Telnet client

cannot connect to

the host

The Telnet client user can encounter this problem for

one of several reasons:

• The user entered the domain name, IP address, or

NS node name incorrectly.

• The system the client attempted to access does not

support Telnet.

• The network of the system the client attempted to

access is not working.

• The Internet daemon is not running on the system

the client tried to access.

There is a host

name lookup

failure

The Telnet user tried to log on when the network was

not running. Or the host system the client tried to

access is not conﬁgured on the network.