<OT> what is a port?

[vu pham]

Tony Alfrey wrote:
> vu pham wrote:
> <snip>
>>
>> Personally I think it is the mail server owners are the people who are 
>> responsible for blocking spam mails, not the ISP. The ISP may own mail 
>> servers, but they should just limit the spam mails by setting up 
>> filters, rules on their mail servers, not on the network.
> 
> Ah, yes, that would be convenient but I think my chances of getting 
> Comcast to do that are zero.  So it sounds like you are saying that 
> Comcast can limit traffic that includes access to port 25 *independent* 
> of actually accessing the Comcast smtp server?
> 

I believe the ISPs, if they want, can block any packets no matter where 
those packets go to, as long as those packets pass thru their routers.

Hey, you go thru *my* house, you have to take my rules :)

Vu