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Thread: Can access port 8081 locally but not across LAN

  1. #1
    Join Date
    Jan 2007
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    West Coast
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    Ubuntu 11.04 Natty Narwhal

    Can access port 8081 locally but not across LAN

    Hello,

    I can access port 8081 locally on my laptop, but I cannot access the server via that port on my other laptop connected to the same wireless network. I am quite baffled. I can access any other typical port, 80, 22, 21, etc no problem, but not 8080 nor 8081. Any suggestions? I am using 12.10 64bit.

  2. #2
    Join Date
    Nov 2007
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    London, England
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    5,525
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    Xubuntu 14.10 Utopic Unicorn

    Re: Can access port 8081 locally but not across LAN

    First, let's see if it's listening for connections. Can you post the output of the command:
    Code:
    netstat -lntu
    We're looking to see what address (if any) is listening on port 8081.

  3. #3
    Join Date
    Jan 2007
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    West Coast
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    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: Can access port 8081 locally but not across LAN

    Here is my netstat ouput:

    Active Internet connections (only servers)
    Proto Recv-Q Send-Q Local Address Foreign Address State
    tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN
    tcp 0 0 0.0.0.0:5900 0.0.0.0:* LISTEN
    tcp 0 0 127.0.0.1:8080 0.0.0.0:* LISTEN
    tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
    tcp 0 0 127.0.0.1:8081 0.0.0.0:* LISTEN
    tcp 0 0 127.0.1.1:53 0.0.0.0:* LISTEN
    tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
    tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN
    tcp 0 0 127.0.0.1:8090 0.0.0.0:* LISTEN
    tcp6 0 0 :::5900 :::* LISTEN
    tcp6 0 0 :::22 :::* LISTEN
    tcp6 0 0 ::1:631 :::* LISTEN
    tcp6 0 0 :::5800 :::* LISTEN
    udp 0 0 127.0.1.1:53 0.0.0.0:*
    udp 0 0 0.0.0.0:68 0.0.0.0:*
    udp 0 0 0.0.0.0:55780 0.0.0.0:*
    udp 0 0 0.0.0.0:5353 0.0.0.0:*
    udp 0 0 0.0.0.0:64783 0.0.0.0:*
    udp6 0 0 :::34807 :::*
    udp6 0 0 :::33861 :::*
    udp6 0 0 :::5353 :::*

  4. #4
    Join Date
    Feb 2009
    Location
    Dallas, TX
    Beans
    6,798
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Can access port 8081 locally but not across LAN

    Hi rkrizan.

    What service are you trying to run?

    Sometimes there are extra steps on the program itself. For instance, live pictures from 'motion' can be accessed from 8081, but they are restricted only to localhost unless you set it otherwise (on the conf file).

    Regards.

  5. #5
    Join Date
    Jan 2007
    Location
    West Coast
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    69
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: Can access port 8081 locally but not across LAN

    papibe,

    I am in fact using 'motion' -- after using the "configuration panel" to try and turn off local-only options, which motion was erroneously reporting was disabled, I completely went through the configuration file and found they indeed had not been. So, problem fixed. Thank you.

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