[Ham-Computers] Protocol question (ICMP)

[jeff]

On Mon, 2004-08-09 at 21:13, WA5CAB at cs.com wrote:
> Can someone please tell me what an ICMP protocol is, 

"ping"


> what it's used for and 
> what programs or type of programs might use it?  I'm getting both inbound and 
> outbound hits that NIS is blocking (or stopping and I have to hit the confirm 
> button).  

you're going to get random noise and on-purpose pings when you're
connected.  It's good that they're being registered and blocked.



> The inbound ones are one matter but the outbound ones have me 
> wondering what's on my machine that wants out.  Neither NAV nor SpyKiller are 
> finding anything.

That's very interesting.
Will NIS tell you which program is trying to get out?

If not, try Zonealarm (Zonelabs.com).  It's a free internet firewall
that stops traffic both ways.  It will tell you what wants in and out.