August 5, 20223 yr HI All -- New unraid user trying to flee qnap and I am a little stumped and can't quite figure out the correct search terms for an issue. The simple story is I have installed a virtual machine (actually several -- debian and home assistant's linux operating system). These virtual machines can access the internet just fine. Yay. The problem is that I cannot access web gui's generated from within the virtual machine from other places on my network. For example, if I run a docker container inside the debian container at ip address 192.168.1.3:9000 (portainer) that has a web gui, it will not be accessible from my home network computer (whose ip is 192.168.1.100) when typing in the 192.168.1.3:9000 address. If I open up a browser on the virtual machine itself and type in the ip address I can access the web gui just fine. Any ideas what I have done wrong? I am using a virt-io network interface to avoid docker issues and have a single physical nic card. I am sure this is a stupid issue and lots of posts about it but can't figure out what search terms to use. Thanks for any help!
August 5, 20223 yr 11 hours ago, Mongoose0318 said: If I open up a browser on the virtual machine itself and type in the ip address I can access the web gui just fine. sounds like you have a firewall installed into the vm which prevents other hosts on the same lan to access that port; check iptables or any other firewall rules. Or you may have a firewall in the router. Edited August 5, 20223 yr by ghost82
August 5, 20223 yr Author Thanks for the idea. Digging into this it apparently was due to having lowered the MTU to my isp setting of 1420 and upon putting it back to 1500 things were fixed.
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