[AusNOG] Telstra Business - known issues??

[Jake Anderson]

The Telstra T-gateway modem/router seems to forget port forwards with 
regularity. I haven't tried their version 2 hardware though so if it's 
new it may be different.
Probably teaching grand mother to suck eggs but have you rebooted the 
modem then deleted and recreated the port forwards? I seem to recall it 
fixing it for a week or two. I resorted to tunnelling connections out 
then bouncing stuff back over the tunnel as the port forwards were so 
spotty.

On 27/4/19 9:32 am, Ross Wheeler wrote:
>
> Sorry for the noise on a saturday - I'm attempting to help a friend 
> sort out a problem. He's overseas and only has sporadic comms.
>
> Tuesday morning (Apr 23) his office stopped receiving email.
> They have a telstra nbn broadband service, and telstra provided modem.
> They run a small unix box with postfix for their mail.
> For years, this has worked fine. Modem forwards port 25 to internal 
> mail server.
>
> While we have a very temporary work-around in place, he's trying to 
> get the problem fixed. Attempting to connect to the external IP 
> results in nothing - not even a SYN packet - arriving at the mail 
> server, yet mail goes out fine.
>
> I've checked the IP address, and there hasn't been any change there, 
> it's still their correct (static) IP.
>
> I've changed the internal address the port forwards to, and still no 
> evidence of any incoming traffic. I've tried other ports, including 
> high numbered (non-priviliged) ports, same thing.
>
> It appears that either the modem has stopped forwarding anything from 
> the outside, OR telstra are not permitting any incoming connections.
>
> It's not my service, I don't have the details (or authority) to talk 
> to tesltra on his behalf, and his time difference and minimal 
> connectivity make it difficult for him to either.
>
> My question is: is anyone aware of any current outages with telstra 
> that might cause this, or any "changes in policy" that we might be 
> unaware of where they've said (for example) "unless you pay the 
> incoming service feature tax, we're blocking all incoming packets"??
>
> Thanks in advance,
> RossW
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