09-24-2003, 05:46 PM | #1 (permalink) |
Insane
Location: Burbs of NYC
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Ports blocked by cable isp
I have just switched over to cable from dsl (today) and am amazed by the speed increase. Went from 600kb/s to over 2mb/s. Its sweet. However, they are much more restrictive. They have port 80 and most all other ports closed. Is there any way of finding out which ports are open or closed or if there is a way to get around this? I have talked to them and they won't tell me and will not open any ports for me. Anyone else deal with this?
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09-24-2003, 05:49 PM | #2 (permalink) |
Please touch this.
Owner/Admin
Location: Manhattan
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chances are, they have ports after 1024 open... *shrug* That's how it was with my old cable provider... gte? adelphia?
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09-24-2003, 05:55 PM | #3 (permalink) |
Know Where!
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they block 80 so u dont house off your computer.
you can do a port scan of 127.0.0.1 scan every port http://www.petri.co.il/quickly_find_...open_ports.htm turn firewall off cause it might block some ports also try this in terminal "netstat -f inet -W" look for ESTABLISHED connectiong on local host that'll show you open ports what happends |
09-24-2003, 07:27 PM | #4 (permalink) |
Crazy
Location: Upstate NY
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have a friend you trust port scan you while you turn off all firewalls, except if you have a router and only want specific ports open.
Don't port scan 127.0.0.1 because that won't tell you the ports the ISP has filtered.
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09-25-2003, 10:31 AM | #6 (permalink) | |
Tilted
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Quote:
G_Lock |
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09-25-2003, 11:08 AM | #7 (permalink) |
Crazy
Location: Upstate NY
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also what are you trying to run that its blocking? if you want a webserver then you'll just have to use a different port like 81 and at the end of the url put :81 ie http://x.x.x.x:81 if its an ftp then just try random ports like 81 or 444 and so on.
Im not sure about the whole cable modem blocking the ports, first time I've heard that but I know the cable modem controlls your bandwidth speed which I found out a awhile back *cough*
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I am jack's broken heart |
09-25-2003, 11:28 AM | #8 (permalink) |
Insane
Location: Burbs of NYC
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I'm on Optonline in NY. I don't believe its the cable modem, there is no built in router in it and no programming abilities to it. I have also run port scans and Shields Up but everything was 'stealth' even with all firewalls shut down.
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"We got no food, no clothes...our pets HEADS ARE FALLIN' OFF!" |
09-25-2003, 11:35 AM | #9 (permalink) |
Tilted Cat Head
Administrator
Location: Manhattan, NY
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Wile
I ran optonline as well, but I never did any webhosting from my server... I know that they used to block 20,21, & 80... for some reason they stopped blocking 20/21 and I used to host an FTP server...
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09-25-2003, 08:54 PM | #10 (permalink) | |
Irresponsible
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Quote:
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09-28-2003, 01:46 PM | #13 (permalink) |
Insane
Location: The Internet
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What is funny is that ISPs have to sign an agreement form with varying upstream providers that explicitly states that they are NOT ALLOWED to block ports, protocols, or anything of that nature. This is in fact an extremely common breach of contract with ISPs.
Too many people act indifferently to this.
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09-28-2003, 03:11 PM | #14 (permalink) |
Tilted
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Can you run your website on a different port? I know that http://stuffs:2003/stuffs looks weird, but you're probably on a dynamic IP anyway with a cable modem, so you already have a nasty URL...
Or you could see if they offer "business" cable modem service which is really just the same thing without the port blocking and give you a higher speed limitation (sometimes they also QOS your packets higher priority on the network). It's usually not too much more expensive, and you get a few static IPs to use. |
Tags |
blocked, cable, isp, ports |
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