steffo
Posts: 25
Joined: Sat Jan 18, 2014 12:43 pm

Port forwarding to Wheezy

Sat Jan 18, 2014 12:54 pm

Hello all,
I am usin my Pi for logging data from my Tellstic temp sensors.
I installed the default package from www.raspberrypi.org/downloads only 10 days ago.

My problem is that I cannot portforward port 8081 (my apache listening port) to read my temp graphs from the internet.
All other "servers" I have in my network I can portforward to, liks SSH - works to the TV-box but if i terminate that port to raspberry it does not work..

Obviously I have a setting somewhere that makes my Pi not accept prort forwarding from my modem/router.. anyone that can suggest a solution?
Works perfect on the internal 192.168.1.xx network but after Dyn-dns and portforwarding I cannot connect and this goes only for the Pi. All other servers and equipment like my TV box works fine from the internet.

Anyone has any idea?

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Richard-TX
Posts: 1549
Joined: Tue May 28, 2013 3:24 pm
Location: North Texas

Re: Port forwarding to Wheezy

Sat Jan 18, 2014 1:03 pm

I would install wireshark and look at some packets.

apt-get install wireshark

tcpdump also works.
Richard
Doing Unix since 1985.
The 9-25-2013 image of Wheezy can be found at:
http://downloads.raspberrypi.org/raspbian/images/raspbian-2013-09-27/2013-09-25-wheezy-raspbian.zip

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DougieLawson
Posts: 38817
Joined: Sun Jun 16, 2013 11:19 pm
Location: A small cave in deepest darkest Basingstoke, UK
Contact: Website Twitter

Re: Port forwarding to Wheezy

Sat Jan 18, 2014 6:05 pm

Is Apache listening on inaddr_any (address 0.0.0.0)?
Have you got any restrictive rules in your webserver config?
Have a look with netstat -tln and in your /etc/apache2/*.conf files.

Is there a firewall?

Can http://www.yougetsignal.com/tools/open-ports/ see your open port?
Note: Any requirement to use a crystal ball or mind reading will result in me ignoring your question.

Criticising any questions is banned on this forum.

Any DMs sent on Twitter will be answered next month.
All non-medical doctors are on my foes list.

steffo
Posts: 25
Joined: Sat Jan 18, 2014 12:43 pm

Re: Port forwarding to Wheezy

Mon Jan 20, 2014 3:32 pm

Tried tcpdump and I could not see any activities on eth0 related to my port forwarded requests..
I see that the ports I am forwarding to are bound to tcp6.. - could that be related to the problem?
IPv6 is turned off in my router... - but then again the port 8080 does not work either from outside the firewal after port forward so it's a long shot..

pi@raspbmc:/etc/default$ netstat -ltn

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:9090 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:4713 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:139 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:36666 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:36667 0.0.0.0:* LISTEN
tcp6 0 0 :::80 :::* LISTEN
tcp6 0 0 :::22 :::* LISTEN
tcp6 0 0 :::36666 :::* LISTEN

steffo
Posts: 25
Joined: Sat Jan 18, 2014 12:43 pm

Re: Port forwarding to Wheezy

Sun Jan 26, 2014 8:27 am

Hello,
I re-installed a raw image instead of the "noobs" network install.
Port forwarding worked directly - on any port.
I am still very interested in what was wrong when I used the "noobs network" install alternative.
thanks for help!

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bingindo
Posts: 5
Joined: Wed Jan 29, 2014 7:19 am
Location: Indonesia

Re: Port forwarding to Wheezy

Mon Feb 03, 2014 2:51 pm

Hi Steffo,

May I know from what link did you get that raw image which you re-intalled the raspberry?
Seems I have same problem and I'm still stuck, many thanks.

Bing

steffo
Posts: 25
Joined: Sat Jan 18, 2014 12:43 pm

Re: Port forwarding to Wheezy

Sat Feb 08, 2014 10:06 am

I just got the raw image from here:
http://www.raspberrypi.org/downloads
I still dont know why the port forwarding dont woork with the "noob" install procedure...
with the 2014-01-07-wheezy-raspbian.zip it worked with no problems, however on this dist I can not install XBMC :(

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