-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Gerardo Gregory
Frankly I dont want any of my ISP's filtering any of my traffic. I think we need (especially enterprise administrators like myself) to take some responsibility, and place our own filters.
That's a popular sentiment which derives its facade of reasonableness from the notion that ISP's ought to provide unencumbered pipes to the Internet core. However, it doesn't bear close scrutiny. Would you say that ISP's should not filter spoofed source addresses? That they should turn off "no ip directed broadcast"? Of course not, because such traffic is clearly pathological with no redeeming social value. The tough part for the ISP is to decide what other traffic types are absolutely illegitimate and should therefore be subject to being Verboten on the net.