re: commonly blocked ports (but not on backbones)

[brett watson <brett () the-watsons org>]

> seems to me this is the wrong question...  a default security
> "posture" (network or system, isp or enterprise or any type of
> entity) should be:  "if it's not explicitly allowed, it's denied."

apologies, i see the original poster was talking about a  
*backbone*...  my mind was on campus/edge/customer networks.  this  
policy, of course, does not apply to backbones (unless you want an  
avalanche of customer calls).

-b