check_tcp in the presence of tcp wrappers

[Skip Montanaro]

I have a check_telnet command defined as

    $USER1$/check_tcp -H $HOSTADDRESS$ -p 23

(I don't recall if it's part of Nagios or NagMIN or something I chucked in
there.) 

In the presence of tcp wrappers this seems like a pretty useless check,
since I might successfully get to port 23 but not get past the wrappers to
the real telnet daemon.  I tried something like

    check_tcp -H host -p 23 -e "login:"

or

    check_tcp -H host -p 23 -s "" -e "login:"


but these both just hang.  What send/expect chit chat should I use to
determine that I actually received a login prompt?

Thanks,

-- 
Skip Montanaro
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skip at pobox.com


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