[Outages-discussion] Anyone aware of problems around Chicago (I believe)?

[Joe Abley]

On 30-Apr-2009, at 16:38, Larry Sheldon wrote:

> Scott Weeks wrote:
>
>> It's an ACL.. Traceroute is blocked, but tcptraceroute goes right
>> through:
>
> Is it just me, or are there in fact two rules in general use?
>
> 1.  Failures in traceroute and ping mean the Intartubes are broken.
> 2.  For safety and security, ICMP, ping packets and traceroutes must  
> be blocked.

Both ludicrous concepts seem to be widely disseminated as "knowledge"  
in my experience, yes.


Joe