[Lvlug] One Machine on Network can't see TCP/IP 192.168.0.1 (or .sometimes .2)

[Randy Kramer]

Randy Kramer wrote:
> Faber Fedor wrote:
> > Maybe .2 is set NOT to respond to ICMP?  What's the value of
> > `cat /proc/sys/net/ipv4/icmp_echo_ignore_all`
> 
> Maybe, but I'm not sure how to check -- it is a Windows (Win95)
> computer, it currently doesn't have enough hard disk space to load Linux
> if I wanted to.
> 
> Is ICMP some new protocol?  In other words, can some machines respond to
> pings without being able to handle ICMP?

Answering one of my own questions, ICMP is not new, it was used in the
original ping program.  See http://ftp.arl.mil/~mike/ping.html (which
also gives the correct explanation(s) of the acronym "ping").

Randy Kramer