This topic

Port 22 is being blocked

hodgsonb11 — Mon, 05 Dec 2022 21:36:23 GMT

Like others on here, I wish to use Port 22 for SFTP access to my web server. This doesn't work via my BT home hub, but works fine via my iPhone as a hotspot.

I've spent nearly an hour with the BT "tech support" chat which has been a waste of time. I'm not sure they even understand the problem.

Can anyone suggest how I get the right people in BT help?

Bill

Re: Port 22 is being blocked

hodgsonb11 — Mon, 05 Dec 2022 22:40:46 GMT

Putting my laptop into the DMZ doesn't work.

Opening port 22 as a rule doesn't work.

Re: Port 22 is being blocked

hodgsonb11 — Mon, 05 Dec 2022 22:42:18 GMT

Opening an IPV6 pinhole doesn't work.

Re: Port 22 is being blocked

hodgsonb11 — Mon, 05 Dec 2022 22:45:49 GMT

In 2018 this happened: https://community.bt.com/t5/Archive-Staging/Outgoing-connections-on-ports-22-amp-23-blocked/td-p/1833971

and this

https://community.bt.com/t5/Archive-Staging/Outgoing-connections-on-ports-22-amp-23-blocked/td-p/1833971

And in 2022 this

https://community.bt.com/t5/Home-setup-Wi-Fi-network/Ports-22-amp-23-blocked/td-p/2208339

Re: Port 22 is being blocked

hodgsonb11 — Mon, 05 Dec 2022 22:48:36 GMT

Here's the result of a port check

Re: Port 22 is being blocked

hodgsonb11 — Mon, 05 Dec 2022 22:50:19 GMT

And here is the useless forwarding rule

Re: Port 22 is being blocked

nostra999 — Tue, 06 Dec 2022 06:37:25 GMT

stupid question sorry but are you sure there isn't a software firewall in place on the destination device blocking the traffic?

Re: Port 22 is being blocked

licquorice — Tue, 06 Dec 2022 08:18:12 GMT

It would appear from your first post that you are attempting to make an outbound connection rather than an inbound connection to a server on your network. That being the case, port forwarding and putting devices in the DMZ is pointless and won't have any effect as that is just for inbound connections.

Ask yourself why would BT block port22, what would be the point even if they were able to do it.

I suspect the problem lies with distant server possibly rejecting the connection due to IP address.

Try disconnecting your hub from line for half an hour to obtain a different IP address.

Re: Port 22 is being blocked

licquorice — Tue, 06 Dec 2022 08:43:35 GMT

Port 22 works just fine for me.

There are a list of servers you can test to here to verify if it is just your server rejecting the connection.

Re: Port 22 is being blocked

gg30340 — Tue, 06 Dec 2022 09:35:39 GMT

Port 22 works fine for me also.

Re: Port 22 is being blocked

hodgsonb11 — Tue, 06 Dec 2022 10:23:38 GMT

I'm connecting to my website - I asked my hosting company to test the connection, it's all fine. I also tested this using my phone as a hotspot - all fine. The only thing which doesn't work is going via the BT network.

Bill.

Re: Port 22 is being blocked

hodgsonb11 — Tue, 06 Dec 2022 10:24:17 GMT

Please look at the links to previous posts within the BT community at many others who came across this issue.

Bill.

Re: Port 22 is being blocked

hodgsonb11 — Tue, 06 Dec 2022 10:28:34 GMT

Thanks - I tried the test servers and one of them works. This is puzzling. As I said earlier, my connect using my iPhone as a hotspot works, but using the BT network doesn't. Which is now confused by this test server working.

Re: Port 22 is being blocked

hodgsonb11 — Tue, 06 Dec 2022 11:08:47 GMT

I tried a Traceroute, results below, it never seems to reach the server. The server is up and active with multiple websites running on it and responding to that IP address.

traceroute to 136.244.70.4 (136.244.70.4), 64 hops max, 52 byte packets

1 bthub (192.168.1.254) 6.656 ms 1.972 ms 2.831 ms

2 * * *

3 * * *

4 31.55.187.176 (31.55.187.176) 14.153 ms 13.034 ms

31.55.187.180 (31.55.187.180) 14.070 ms

5 core3-te0-12-0-13.faraday.ukcore.bt.net (213.121.192.102) 12.579 ms

host213-121-192-110.ukcore.bt.net (213.121.192.110) 14.358 ms

core3-te0-12-0-13.faraday.ukcore.bt.net (213.121.192.102) 11.381 ms

6 peer2-et4-0-5.slough.ukcore.bt.net (194.72.16.216) 16.084 ms

peer7-et-3-0-5.telehouse.ukcore.bt.net (109.159.252.188) 12.069 ms

peer2-et-7-0-2.slough.ukcore.bt.net (109.159.252.128) 13.428 ms

7 vl32-br1-cer.lon3.choopa.net (195.66.226.176) 12.865 ms 16.054 ms 12.839 ms

8 * * *

9 * * *

10 * * *

11 * * *

12 * * *

13 * * *

14 * * *

15 * * *

16 * * *

17 * * *

18 * * *

19 * * *

20 * * *

21 * * *

22 * * *

23 * *^C

Re: Port 22 is being blocked

hodgsonb11 — Tue, 06 Dec 2022 12:05:09 GMT

I'm also investigating if this is caused by using MacOS Ventura, some people have had problems with SFTP.

Yet I can access the site by using my iPhone rather than the router. It's very odd.

Re: Port 22 is being blocked

hodgsonb11 — Tue, 06 Dec 2022 19:49:29 GMT

It's magically started working again. Very weird.

Re: Port 22 is being blocked

hodgsonb11 — Tue, 06 Dec 2022 22:47:25 GMT

My final conclusion is that MacOS Ventura might be at fault, I added two lines (below) to the SSH config file. But that doesn't explain why it worked via my iPhone. The macOS app 'Transmit' is working fine now, using SSH keys instead of a password.

Re: Port 22 is being blocked

DavidM — Wed, 07 Dec 2022 09:15:54 GMT

Hi @hodgsonb11 .

Thanks for getting back and letting us know you got this sorted. We appreciate the update.

Cheers

David

Re: Port 22 is being blocked

AndyCairns — Wed, 28 Dec 2022 15:00:26 GMT

What are the 2 lines? I can't see them.

Re: Port 22 is being blocked

hodgsonb11 — Wed, 28 Dec 2022 19:43:51 GMT

Hi,

Check this article:

https://www.droidwin.com/ssh-not-working-in-macos-ventura-fix/

Bill.