[arm-allstar] Debugging port forwarding

Fri Feb 27 12:38:29 EST 2015

Thanks Andrew.
I will get that setup later today.
Dave
VE7PKE

On Fri, Feb 27, 2015 at 9:37 AM, Andrew Sylthe <asylthe at kc9ona.com> wrote:

> Yes, that command would need to be run from remote to your public IP set
> as the target.  Like Doug stated in his email, UDP port scanning is prone
> to report false positives.
>
> nmap will report back "open" if the port is open, or if no response at all
> is sent back due to the connectionless nature of UDP.  Ports filtered by a
> firewall will report back "open" unfortunately.  However, if the tool
> reports back "closed" then you at least know that the port isn't properly
> forwarded to your node / device.
>
> On Fri, Feb 27, 2015 at 11:30 AM, Dave Miller <ve7pke at gmail.com> wrote:
>
>> Andrew,
>> So this would be done externally?
>>
>> I can try to get someone to do that.
>> Thanks
>> Dave
>> VE7PKE
>>
>> On Fri, Feb 27, 2015 at 8:56 AM, Andrew Sylthe <asylthe at kc9ona.com>
>> wrote:
>>
>>> Checking to see if a UDP port is responsive with a tool like nmap is
>>> extremely easy.
>>>
>>> The syntax is:
>>>
>>> $ sudo nmap -sU -p port target
>>>
>>> This tool will tell you if the state of a specified port is "open" or
>>> "closed" for the desired target.  You'd want to change "port" to 4569 (if
>>> using the default port number) and "target" to the hostname or ip of the
>>> remote target you're running the port scan against.
>>>
>>> I hope this helps.
>>>
>>> On Fri, Feb 27, 2015 at 10:47 AM, Doug Crompton <doug at crompton.com>
>>> wrote:
>>>
>>>> Dave,
>>>>
>>>>  It is very hard if not impossible to port check a udp port remotely.
>>>> Port checkers will show erroneous info on udp ports. tcp ports should show
>>>> correctly on a port checker. You are right in checking a TCP port like http
>>>> or ssh and see if they work. The BBB has httpd running for lsnodes but if
>>>> you simply send a web browser to your BBB's local IP address you will get -
>>>>
>>>> THIS IS A TEST !
>>>>
>>>> If you are not using port 80 then make sure you put the port in the url
>>>> -
>>>>
>>>> Ex - http://192.168.1.100:8080
>>>>
>>>> on the web browser. If you have port 80 (or whatever you have changed
>>>> it to) forwarded to your BBB anyone on the Internet should also get that by
>>>> going to your public IP.
>>>>
>>>> You could also setup ssh which defaults to port 222. If you port
>>>> forward 222 (or whatever you have it set to) anyone on the Internet going
>>>> to your public IP at that port should get your login. No need to actually
>>>> login. If you get the login it is working.
>>>>
>>>> You might also check and make sure that both of you have each others
>>>> node entry in your rpt_extnodes file. It is located in /tmp  - you can grep
>>>> for the info.
>>>>
>>>> [root at wa3dsp-40961-cm /]# grep 27225 /tmp/rpt_extnodes
>>>> 27225=radio at 73.30.112.57:4569/27225,73.30.112.57
>>>>
>>>> There should be an entry and the lookup for the distant node will show
>>>> their public IP address.  You can use this IP info to connect ssh or
>>>> http.
>>>>
>>>> Another thing you should do is on the end that is NOT receiving the
>>>> connect be in the Asterisk client - asterisk -rvvv   - when the other node
>>>> is connecting. If you see nothing then you know it is not getting through.
>>>> If you see a connect attempt but with errors you can  troubleshoot from
>>>> there an in that case at least you know it is getting through.
>>>>
>>>> I hope that helps. Some routers can be a problem.
>>>>
>>>>
>>>>
>>>> *73 DougWA3DSPhttp://www.crompton.com/hamradio
>>>> <http://www.crompton.com/hamradio>*
>>>>
>>>>
>>>> ------------------------------
>>>> Date: Fri, 27 Feb 2015 08:19:47 -0800
>>>> From: ve7pke at gmail.com
>>>> To: arm-allstar at hamvoip.org
>>>> Subject: [arm-allstar] Debugging port forwarding
>>>>
>>>>
>>>> I am going in a real nice circle that is every decreasing to zero
>>>> radius.
>>>> To get to the solution I could use some details.
>>>> I am using the latest BBB code.
>>>> Tom VE7DID is unable to connect to my node but I am able to connect to
>>>> his. Things work fine once I connect.
>>>> So I figure the issue is either my router or my DSL modem/???
>>>>
>>>> I am trying to get a simple test case working to hit the correct party
>>>> squarely on the head.
>>>>
>>>> I have been try to use the various online port checkers to see if I am
>>>> open. They all show closed. Even tried a different DSL router that
>>>> allegedly was in bridge mode. Still same results.
>>>>
>>>> My thought is to ignore port 4569 for now and try to open up a path to
>>>> the BBB on HTTP to test first. I see if I use my browser locally got to my
>>>> IP I get a test message that says This is a Test!. That is cool. I assume
>>>> that is on port 80?? Where do I change that port to something else like
>>>> 8080 as my glorious ISP Telus block all ports below 1000. ;-(
>>>>
>>>> I don't know what these port checker do but I expect if the is a web
>>>> server responding they will give correct information.
>>>>
>>>> I want to keep it simple for now and just prove that the router is
>>>> moving data to the right IP locally.
>>>>
>>>> Thanks for reading to the end of this rather long winded message.
>>>> I am using a Netgear Prosafe FVS318G
>>>>
>>>> Many thanks
>>>> Dave
>>>> VE7PKE
>>>>
>>>>
>>>> _______________________________________________ arm-allstar mailing
>>>> list arm-allstar at hamvoip.org
>>>> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar Visit
>>>> the BBB web page -
>>>> http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/
>>>>
>>>> _______________________________________________
>>>>
>>>> arm-allstar mailing list
>>>> arm-allstar at hamvoip.org
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>>>>
>>>> Visit the BBB web page -
>>>> http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/
>>>>
>>>
>>>
>>>
>>> --
>>> Andrew Sylthe
>>> KC9ONA
>>>
>>> _______________________________________________
>>>
>>> arm-allstar mailing list
>>> arm-allstar at hamvoip.org
>>> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>>
>>> Visit the BBB web page -
>>> http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/
>>>
>>
>>
>> _______________________________________________
>>
>> arm-allstar mailing list
>> arm-allstar at hamvoip.org
>> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>
>> Visit the BBB web page -
>> http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/
>>
>
>
>
> --
> Andrew Sylthe
> KC9ONA
>
> _______________________________________________
>
> arm-allstar mailing list
> arm-allstar at hamvoip.org
> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>
> Visit the BBB web page -
> http://www.crompton.com/hamradio/BeagleBoneBlackAllstar/
>
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