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Operating Systems BSD Ping remote sever, nc, telnet, whatever Post 302964012 by Peasant on Saturday 9th of January 2016 01:19:44 AM
Old 01-09-2016
If you are looking to see if something is listening on port 80, you were close with telnet.
Code:
telnet <ip> <port> # not <ip>/<port>

Without the port, telnet will try the default telnet port (port 23).
On most modern unix system telnet is disabled due to security reasons (plain text over network, no encryption etc.), in turn you got (which means telnet is not active on the remote server) :
Code:
telnet: Unable to connect to remote host: Connection timed out

Ping will tell you that the server is alive and responding to ICMP requests.
ICMP is also quite often blocked on firewalls, due to ICMP flooding exploits and alike.

Hope that clears things out.
Regards
Peasant.
This User Gave Thanks to Peasant For This Post:
 

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telnetrc(4)						     Kernel Interfaces Manual						       telnetrc(4)

NAME
telnetrc, .telnetrc - Specifies setup commands for a telnet session SYNOPSIS
$HOME/.telnetrc DESCRIPTION
The .telnetrc file contains the setup information for a telnet session. It is a hidden file in your home directory and must be readable by the user logging in. The file can consist of multiple entries for each remote host to which a user can connect. A remote host entry consists of multiple lines. The first line is the name of a remote host. The subsequent lines must begin with blank spaces, and contain telnet subcommands. These sub- commands are processed as though they were typed in manually. Lines beginning with a number sign (#) are comment lines. See telnet(1) for a complete list of telnet subcommands. To specify subcommands that apply to all systems, create an entry, using the word "DEFAULT" as the system name, and specify the telnet sub- commands in the subsequent lines. EXAMPLES
The following shows a sample .telnetrc file: # Beginning of telnetrc file # Default subcommands that apply to all systems DEFAULT environ undefine USER # First system entry system1 set echo toggle crlf # Second system entry system2 set echo mode line toggle crlf FILES
User-customized telnet startup values. RELATED INFORMATION
Commands: telnet(1). delim off telnetrc(4)
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