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599 Internal Exception on transfer attempt

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8 comments

  • cPRex Jurassic Moderator
    Hey there! It doesn't look like it's complaining about port 22, as the error is with port 2087. You can try a basic telnet test from the Destination machine to the Source machine with port 2087 to see if that connection works. telnet source_server_name_or_IP 2087
    If "telnet" isn't installed, a simple "yum install telnet" will take care of it as that package is provided by the operating system.
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  • kwdamp
    Hey there! It doesn't look like it's complaining about port 22, as the error is with port 2087. You can try a basic telnet test from the Destination machine to the Source machine with port 2087 to see if that connection works. telnet source_server_name_or_IP 2087
    If "telnet" isn't installed, a simple "yum install telnet" will take care of it as that package is provided by the operating system.

    It says Trying and then returns w/ Connection timed out a few minutes later.
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  • cPRex Jurassic Moderator
    So that's the issue then. If you're not seeing any firewall settings that would block port 2087 on either end you may need to reach out to your provider to have them check the network settings at a higher level than your server.
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  • kwdamp
    So that's the issue then. If you're not seeing any firewall settings that would block port 2087 on either end you may need to reach out to your provider to have them check the network settings at a higher level than your server.

    Ok, is there a terminal command to check that specific port on a machine?
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  • cPRex Jurassic Moderator
    There is, but it depends on what firewall and operating system you're running. Most systems will respond well to this command: iptables -L -n | grep :2087
    which should give you this output if the port is open and working normally: # iptables -L -n | grep :2087 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:2087 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:2087
    It's important to note that just because it's opened locally doesn't mean there isn't a network device outside of your machine that could be blocking incoming connections. Another very easy well to tell if port 2087 is open is that your WHM access would not work if it wasn't.
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  • kwdamp
    There is, but it depends on what firewall and operating system you're running. Most systems will respond well to this command: iptables -L -n | grep :2087
    which should give you this output if the port is open and working normally: # iptables -L -n | grep :2087 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:2087 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 ctstate NEW tcp dpt:2087
    It's important to note that just because it's opened locally doesn't mean there isn't a network device outside of your machine that could be blocking incoming connections. Another very easy well to tell if port 2087 is open is that your WHM access would not work if it wasn't.

    Ok. Yes, that all looks correct and I can definitely connect to WHM via the web interface. I will wait for a response from the ISP. Thx
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  • kwdamp
    I believe the ISP tech ended up reaching out to cpanel as they also couldn't find anything. In the end they came back with this, and it appears to work, if anyone else has this problem down the road. The subnet mask on eth0 on for server2.redacted.com was configured to prevent it from reaching anything on 184.194.x.x We will be restarting networking now - please stand by.
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  • cPRex Jurassic Moderator
    I'm glad they were able to help get the network configuration working well!
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