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Operating Systems BSD Ping remote sever, nc, telnet, whatever Post 302964035 by Peasant on Saturday 9th of January 2016 04:55:52 AM
Old 01-09-2016
Ping against server will work if firewall allows ICMP probes.

If a server service is listening on port N, a simple telnet IP port will tell you that.
Something like :
Code:
:~$ telnet www.unix.com 80
Trying 4.59.125.171...
Connected to www.unix.com.
Escape character is '^]'.

This tells me that 4.59.125.171 has a port 80 open are receiving requests.

For further (security Smilie) analysis nmap is the best tool.
Port Scanning is Not a Crime but acting on its results can be, especially on government and financial sites.

Regards
Peasant.
 

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KF(1)							    BSD General Commands Manual 						     KF(1)

NAME
kf -- securely forward tickets SYNOPSIS
kf [-p port | --port=port] [-l login | --login=login] [-c ccache | --ccache=ccache] [-F | --forwardable] [-G | --no-forwardable] [-h | --help] [--version] host ... DESCRIPTION
The kf program forwards tickets to a remote host through an authenticated and encrypted stream. Options supported are: -p port, --port=port port to connect to -l login, --login=login remote login name -c ccache, --ccache=ccache remote cred cache -F, --forwardable forward forwardable credentials -G, --no-forwardable do not forward forwardable credentials -h, --help --version kf is useful when you do not want to enter your password on a remote host but want to have your tickets one for example AFS. In order for kf to work you will need to acquire your initial ticket with forwardable flag, i.e. kinit --forwardable. telnet is able to forward tickets by itself. SEE ALSO
kinit(1), telnet(1), kfd(8) Heimdal July 2, 2000 Heimdal
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