Re: Has anyone asked Comcast to stop blocking inbound ports?

["Kristian Erik Hermansen" <user=152@nabble.blu.org>]

 On Dec 21, 2007 5:25 PM, Gregory Boyce <[hidden email]> wrote: 
> Actually, udp is a weird one. 
> 
> "CLOSED" means that you received an ICMP destination port unreachable 
> message. 

Ahh yes, you have outdone me sir.  Type 3, Code 3 :-P 

> If you get no response its "OPEN|FILTERED" since not all udp applications 
> send a response back to a UDP packet that was received. 

Right, it would depend on the packet you sent perhaps as well. 
Layer-7 protocol specific, yes! 

> "OPEN" is a weird one that I think you get if you reach a UDP enabled 
> application that responds to packets. 

Sure ... but I would say that if you get even one packet back, you can 
safely assume it is OPEN!!!  Good discussion. 

Now, for extra extra credit, what happens when you try to initiate a 
connection to an SCTP port that is closed??? :-) 
-- 
Kristian Erik Hermansen 
"I have no special talent. I am only passionately curious." 

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