Running dropbear on http port

[RDF]

Sometimes I'm behind a firewall that only allows outgoing traffic through port 80, which prevents me SSH access to my ASUS.

If I try to change dropbear to listen on port 80, I get this error:

dropbear[345]: Failed listening on '80': Error listening: Address already in use
dropbear[345]: premature exit: No listening ports available.

The problem seems to be the web GUI, which is listening on: 0 0.0.0.0:80.
How can I change the listening address of the WWW GUI?

I'm using 1.9.2.7-d-r740.

[velcrow]

Are you using a tunnel?

Don't think its the WebGUI as its ported to 8XXX from WAN? But you can kill the httpd process to test I suppose?

[RDF]

Hi, thanks for the reply!

No, I'm not using a tunnel.

The web GUI seems to listen on all adresses on port 80.

$ lsof -nP -i | grep httpd
httpd      40    root    5u  IPv4    249       TCP *:80 (LISTEN)

I have no idea how to change the settings for the default httpd server. I remember I've tried this before...

[lly]

I have no idea how to change the settings for the default httpd server. I remember I've tried this before...

Just search this forum
http://wl500g.info/showthread.php?t=...t=http_lanport

[RDF]

Just search this forum
http://wl500g.info/showthread.php?t=...t=http_lanport

Thanks, and sorry for not searching carefully enough.

So I can set the httpd port by setting the "http_lanport" nvram variable.
But why is httpd listening on all addresses (0.0.0.0), if I'm just using http_lanport?
There's also a variable called http_wanport, which is set to none.

I can't find a variable for the listening address? Is there supposed to be a variable like http_listeningaddress? Or how to change it to listen just the LAN IP?

[lly]

Builtin httpd always listen on all interfaces, but incoming WAN connections is blocked in firewall by default. You have to learn iptables to know how it is working.

http_wanport variable used to forward some port from WAN (if it is enabled in web-UI) to http_lanport port.