Re: Constant Pinging

From: Tim Haynes (usenet-20030917_at_stirfried.vegetable.org.uk)
Date: 09/17/03 

Date: Wed, 17 Sep 2003 09:41:00 +0100

"ynotssor" <"ynotssor"> writes:

> Well, that makes sense in terms of an ISP blocking pings that transit the
> network, which I suppose is the context of the topmost reference above.
>
> I can't see any reason why an indiviual customer shouldn't drop any
> unwelcomed pings though.

Agreed. There's no reason for anyone out there to be sending pings, whether
as some kind of "monitoring" or no - it's not welcome, and I'll quite
happily monitor my boxes *without* requiring a hole in the firewall.

The things you don't want to block are PTMU packets; they look like a small
sequence of icmp-echo requests, mostly around LEN=1500 with DF=1 and
normally follow an attempt of yours to contact the network previously.

~Tim 

-- 
In a big country dreams stay with you       |piglet@stirfried.vegetable.org.uk
Like a lover's voice fires the mountainside |http://spodzone.org.uk/
Stay alive                                  |

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