[AusNOG] Telstra 3g connections and port filtering in the Brisbane area

[Russell Langton]

Hi Mark,

Email sent ;)



On Thu, May 23, 2013 at 1:47 PM, Scott Anderson <sanderson at aus-it.com.au>wrote:

>  It could be a MTU/ICMP problem.****
>
> ** **
>
> https sets the DNF bit from memory, while http does not. If ICMP is
> blocked somewhere along the path it’ll just drop the https packets, while
> the http packets will just fragment.****
>
> ** **
>
> If they manage gateway router used by the https server I’d get them to try
> lowering the mss there and see if that helps.****
>
> ** **
>
> Scott**
>
>  ****
>
> *From:* ausnog-bounces at lists.ausnog.net [mailto:
> ausnog-bounces at lists.ausnog.net] *On Behalf Of *Joshua D'Alton
> *Sent:* Thursday, 23 May 2013 1:02 PM
> *To:* Mark Tees
> *Cc:* ausnog at lists.ausnog.net
> *Subject:* Re: [AusNOG] Telstra 3g connections and port filtering in the
> Brisbane area****
>
> ** **
>
> I haven't had this problem for years, but last had it on one of those
> PCMIAA old style things, and it turned out back then to be the wrong APN.
> telstra.wap i believe we used, vs telstra.internet. You can try call
> telstra business support (as an authorised account holder), see what they
> say about APN and/or unblocking ports (can you check port 25 btw?) YMMV,
> good luck!****
>
> ** **
>
> Oh and all fine here in Melb on mob + dongle, as well as ACT and NSW 3g
> mobile.****
>
> ** **
>
> On Thu, May 23, 2013 at 12:53 PM, Mark Tees <
> mark.tees at digitalpacific.com.au> wrote:****
>
> Hi Noggers,
>
> We have had a ticket come in from a client in Brisbane where they report
> they cannot get to HTTPS/Port 443 on their server from their Telstra 3g
> mobile connection. They are saying that they have a number of other
> customers also on Telstra 3g that have the same problem.
>
> They can get to port 80/HTTP just fine. Pings/traceroutes all look good. I
> have checked through all possible points on our network and it appears the
> traffic is just not getting through to us. I have been trying to get the
> effected customer to do a tcptraceroute for me so we can spot where the
> packets are getting dropped.
>
> Everywhere else I checked from I can get to port 443 on their server.
>
> Is there anyone around on Telstra 3g in Brisbane that could possibly do a
> tcptraceroute to port 443 for me?
>
> Also, any pointers as to how the customer could get this escalated within
> Telstra?
>
> Thanks,
>
> Mark
> _______________________________________________
> AusNOG mailing list
> AusNOG at lists.ausnog.net
> http://lists.ausnog.net/mailman/listinfo/ausnog****
>
> ** **
>
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