I just spent a few minutes looking into this again, and figured out the problem. AT&T has apparently changed the way their CGN works. I use a form of port knocking to restrict access to SSHd from "foreign" networks. It used to work fine from my phone. Now, the port knocking request from the phone and the ssh connection are being NAT'd to different public IPs, so my system is allowing ssh access to one AT&T IP, and then the ssh connection comes from a nearby but different IP. On Wed, 10 Oct 2012, Owen DeLong wrote:
The day before I left the US, it was still working on my iPad.
Owen
On Oct 8, 2012, at 5:20 AM, Jon Sands <fohdeesha@gmail.com> wrote:
On 10/7/2012 9:22 PM, Jon Lewis wrote:
has anyone else noticed AT&T mobile is blocking ssh (outgoing 22/tcp) connections?
Not here, have an SSH session open on my phone on port 22 as we speak. I'm on an android on ATT's 3G network in central indiana, if that matters.
-- Jon Sands Fohdeesha Media http://fohdeesha.com/
---------------------------------------------------------------------- Jon Lewis, MCP :) | I route Senior Network Engineer | therefore you are Atlantic Net | _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________