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nyrrule27

join:2007-12-06
Howell, NJ

Open Ports

I setup an ftp server in my house. It works fine when using port 21. as soon as i change it to a different port it doesnt work. is there a list of ports or range of ports that cablevision might be blocking


TheWiseGuy
Dog And Butterfly
Premium,MVM
join:2002-07-04
East Stroudsburg, PA
kudos:3
Reviews:
·Optimum Online

OOL does not block many ports, so if you have tried several, it likely is because FTP is complicated. There are actually 2 ports involved and two types of FTP, passive and active. If you are using a router on your network it may need to be configured for a passive connection or if you are using active the client side may need to be configured for the different ports since most have built in configuration for ftp using ports 21/22

Read

»slacksite.com/other/ftp.html
--
Warning, If you post nonsense and use misinformation and are here to argue based on those methods, you will be put on ignore.


nyrrule27

join:2007-12-06
Howell, NJ

ok i guess i should have given more info. im using a linksys WRT320N and a qnap ts 859 nas. I set port 21 to forward to my nas. in the configuration for the nas you can specify which port to use. as i said if i change both setting to port 21 it works no problem.



Help4You

@swbell.net
reply to nyrrule27

Do you have a firewall or router in the middle between your OOL modem and your desktop? If so you need to do port forwarding to allow access from the outside or to do port mirroring.
Only ports i know OOL openly blocks is 445 and 25.


nyrrule27

join:2007-12-06
Howell, NJ

Yes the linksys is my firewall and as I said I did the port fowarding to port 21 and works fine. The minute I change the port number on the router and the nas is stops


TheWiseGuy
Dog And Butterfly
Premium,MVM
join:2002-07-04
East Stroudsburg, PA
kudos:3
Reviews:
·Optimum Online
reply to nyrrule27

Please read the link I posted. Figure out whether you are using Passive or Active FTP on the client. If you are using Active you will likely have to forward the Data port/connection on the client side. If you are using Passive you likely will need to forward the Data port/connection on the Linksys(server side). Port 21 is the control port/connection.

As I said most routers have special routines that deal with FTP because it uses 2 ports and therefore when you are not using port 21 they may not know they need to allow the connection on a different port.
--
Warning, If you post nonsense and use misinformation and are here to argue based on those methods, you will be put on ignore.


frdrizzt

join:2008-05-03
Ronkonkoma, NY
kudos:1
Reviews:
·Optimum Online

»Optimum Online FAQ »What ports are currently blocked by OOL?

If you're not using one of the ports listed in the FAQ, it would not be blocked by the modem. It would either be an issue with the FTP software or router configuration.


iknow
Premium
join:2012-03-25
reply to nyrrule27

why should any ports be blocked, and why do you need to get boost to have them opened?
"Ports blocked & level of service required to open:

Ports 25 & 80 - opened with boost/boost plus/ultra
Ports 8080, 1043/1080/3128 - opened with boost/ultra; and static IP business accounts only
Ports 135-139, 445 - currently unable to be opened"

is that allowed by the FCC? how can you use SMTP if the port is blocked?



limegrass69
Here's my Posting tag

join:2008-05-28

said by iknow:

is that allowed by the FCC?

Yes.

iknow
Premium
join:2012-03-25

said by limegrass69:

said by iknow:

is that allowed by the FCC?

Yes.

i remember the FCC fined comcast for blocking torrents. why can cablevision block smtp? and require you to use only their smtp mail server? the FCC ruled all traffic must be treated equal. this causes the OPs problem, and i'm sure others are bothered by this.


limegrass69
Here's my Posting tag

join:2008-05-28

They're not blocking traffic. They're blocking ports.


TheWiseGuy
Dog And Butterfly
Premium,MVM
join:2002-07-04
East Stroudsburg, PA
kudos:3
Reviews:
·Optimum Online

1 edit
reply to iknow

said by iknow:

said by limegrass69:

said by iknow:

is that allowed by the FCC?

Yes.

i remember the FCC fined comcast for blocking torrents. why can cablevision block smtp? and require you to use only their smtp mail server? the FCC ruled all traffic must be treated equal. this causes the OPs problem, and i'm sure others are bothered by this.

1. It is not the cause of the posters problem, therefore you are trolling.

2. Your facts are incorrect the FCC did not fine Comcast, though they did condemn Comcast's lying about its traffic management.

Leading up to the 3-2 vote at the FCC’s open meeting here, Martin and the head of the agency’s Wireline Competition Bureau issued a strong indictment against Comcast, accusing the company of lying to the public about how it went about managing data traffic over its high-speed Internet network.

»www.multichannel.com/content/fcc···-comcast

3. Cablevision makes it clear in their terms of service that you can not run a server on regular OOL and that you need to subscribe to boost to run an SMTP server.

Edit
And Oh By The Way the court ruled that the FCC did not even have the authority to rule comcast had violated Net Neutrality.

»www.infoworld.com/d/the-industry···sion-634

Warning, If you post nonsense and use misinformation and are here to argue based on those methods, you will be put on ignore.


Thinkdiff
Premium,MVM
join:2001-08-07
Bronx, NY
kudos:11
reply to iknow

said by iknow:

how can you use SMTP if the port is blocked?

Inbound SMTP is blocked (you can't run a server). They're not blocking third-party SMTP servers. Many SMTP servers also have alternate ports anyway (587).
--
University of Southern California - Fight On!

iknow
Premium
join:2012-03-25
reply to TheWiseGuy

said by TheWiseGuy:

1. It is not the cause of the posters problem, therefore you are trolling.

no, blocked ports is his problem. at least if he wanted to use one of the blocked one's. i don't troll btw.. i'm trying to help.

TheWiseGuy
Dog And Butterfly
Premium,MVM
join:2002-07-04
East Stroudsburg, PA
kudos:3
Reviews:
·Optimum Online

You are clueless. He already said it works with the default port for FTP port 21. He is not having a problem due to blocked ports he just did not configure his own router or the client router for FTP which is actually a complicated protocol so that is not surprising and happens all the time.

YES you are trolling, which you do on a regular basis, the object is to help him, not go off on a fanciful discussion of whether OOL is allowed to block ports, which has absolutely nothing to do with his problem and sidetrack the thread.
--
Warning, If you post nonsense and use misinformation and are here to argue based on those methods, you will be put on ignore.


cablewizzard

join:2009-06-14
Hicksville, NY
kudos:1
reply to nyrrule27

said by nyrrule27:

I setup an ftp server in my house. It works fine when using port 21. as soon as i change it to a different port it doesnt work. is there a list of ports or range of ports that cablevision might be blocking

FTP behind a NAT requires an application-layer proxy service snooping traffic on the NAT itself, and opening ports for each and every data transfer correctly, based on what was requested in the port-21 command(s). It is unlikely that such proxy service on a NAT will ever listen to anything BUT port 21, or is configurable as such.

Do yourself a favor: as you have no bloody clue about the technical details you're up against here - go get yourself a HTTP/HTTPS-capable NAS box (or enable such access, if it supports it), and forward a single arbitrary port to your liking to the HTTP/HTTPS port of the NAS. Problem solved.