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

["Gregory Boyce-3" <user=138@nabble.blu.org>]

 On Fri, 21 Dec 2007, Kristian Erik Hermansen wrote: 

> On Dec 21, 2007 4:48 PM, Gregory Boyce <[hidden email]> wrote: 
>> No you don't. 
>> 
>> 22/tcp  open     ssh 
>> 23/tcp  closed   telnet 
>> 139/tcp filtered netbios-ssn 
>> 
>> Open is obvious. 
>> Closed means no filtering but nothing listening. 
>> Filtered means filtered. 
>> 
>> Now you do need to make sure that YOUR system isn't filtering the port. 
> 
> Right, that's what I really meant to say.  Now let me clarify what 
> this all means... 
> 
> OPEN == TCP syn/ack response 
> CLOSED == TCP rst response 
> FILTERED == TCP drop, no response