Re: Re: Connection Refused
  By: Nightfox to MRO on Thu Mar 02 2023 03:45 pm

 > Ni>>> If port 23 isn't letting people through, maybe your ISP is
 > Ni>>> blocking that port, I'd guess.

 >>> I hope not. It's bad enough having ISPs blanket-block SMTP, if
 >>> they start blocking telnet that would really suck.

 MR>> i can understand why they would block it. if you have residential
 MR>> you should not be running servers.

 Ni> Why is that? Running a BBS is just a hobby for us, and our BBS is
 Ni> technically a server.

 Ni> The only reason I can think why we "shouldn't run servers" with
 Ni> residential internet is because ISPs would want to make more money by
 Ni> charging more for "business" internet service, which doesn't have the
 Ni> restrictions that their residential internet service has.

 ISPs have been blocking ports for years.  The public line is that it's "for security".   Lots of old wifi routers left port 23 open with a default login/pass.  SMTP is disallowed because an ISP doesn't want to risk having their IP address space associated with spam. 

I get quite a few bots/worms trying to log into my BBS every day on port 23, so I guess I can see why they would want to do this.  

Some ISPs will also block 80, 443, 21, 22, and 53 as well.   

Those are the ISPs That will then try to upsell you to business class to get those ports unblocked. 

DaiTengu

...Distrust your first impressions; they are invariably too favorable.

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