Charter: ICMP being blocked?

[bconway at alum.wpi.edu (Brian J. Conway)]

> I'm wondering if Charter has begun filtering ICMP traffic to/from
> subscriber addresses as some sort of DoS countermeasure? Or is this
> simply a "feature" that I'm experiencing? It's an interesting security
> enhancement, but it does deprive me of some useful troubleshooting tools
> (as well as their tech support).
> 
> Is anybody else experiencing similar problems?

I use SNIPS (http://www.navya.com/snips/) to keep tabs on a couple 
computers of importance to me, one of which lives on Charter's network.  I 
believe they blocked all ICMP traffic a couple months ago when doing 
network maintenance (my friends computer went through 3 IP addresses in a 
couple days).  I haven't looked into it beyond that.

-b