18
[SOLVED, user error] Proxmox not conncected to internet, but is reachable on LAN (sopuli.xyz)
submitted 7 months ago* (last edited 7 months ago) by DreadPotato@sopuli.xyz to c/selfhosted@lemmy.world
46 comments fedilink hide all child comments

[SOLVED] Turns out I'm just a bigger moron than I thought. The MAC address of my server had accidentally been flagged in my router for black listing.

As the title says, my proxmox host is apparently not able to reach the internet anymore, not sure for how long this has been an issue, I rarely work on the host itself. It can ping other devices on my network just fine, and other devices can ping it. I can also SSH in to it and access the web interface. My VMs are connected to the internet without any issues. I don't need to access the host remotely/outside my home network, this is just for updating it etc.

I can't see the host under active devices in my router though.

I have been trying to figure why, but so far without any luck.

you are viewing a single comment's thread
view the rest of the comments
[-] PlexSheep@feddit.de 2 points 7 months ago

Can you dig @9.9.9.9? If so, its certainly DNS. If it's not DNS, perhaps try to check your iptables iptables -L && iptables -t nat -L.

[-] DreadPotato@sopuli.xyz 0 points 7 months ago

I'm not really sure what to look for, I'm not very experienced in network, but this is the output i get

[-] PlexSheep@feddit.de 3 points 7 months ago

From the output, you don't have any routing rules for your machine that block outgoing traffic. The dig command confirms that you can talk to servers. 9.9.9.9 is a common DNS Server. Based off of this, it seems like your problem is that your system has a bad DNS configuration (it's always DNS).

Can you parhaps cat /etc/resolv.con? This file normally contains the used DNS servers for Linux systems, unless using special software.

[-] DreadPotato@sopuli.xyz 0 points 7 months ago

sure

[-] PlexSheep@feddit.de 1 points 7 months ago

Okay, no external software for DNS management present here. Is that ip a working DNS Server? Is it your server itself perhaps?

[-] DreadPotato@sopuli.xyz 1 points 7 months ago* (last edited 7 months ago)

192.168.68.210 is my adguard, it's on a different machine. It should be working, all my other devices use it and I can see the traffic going through it. My servers IP is 192.168.68.120, and I can't see traffic from that on my adguard at all. But it can ping my adguard.

[-] PlexSheep@feddit.de 1 points 7 months ago

Okay, so if that's your actual DNS Server, can you confirm that it works? dig @yourdns debian.org, for example. Afterwards try to use the default DNS of your system dig debian.org. If both works, your DNS config should be fine. Try a curl debian.org -v too.

debian.org is just a random domain for this, use whatever you want. I don't see anything badly configured so far.

[-] DreadPotato@sopuli.xyz 1 points 7 months ago

as far as i can tell from the output, i think my DNS is working?

this post was submitted on 01 Apr 2024
18 points (90.9% liked)

Selfhosted

40153 readers
269 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

  1. Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.

  2. No spam posting.

  3. Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.

  4. Don't duplicate the full text of your blog or github here. Just post the link for folks to click.

  5. Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).

  6. No trolling.

Resources:

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 1 year ago
MODERATORS
ruud@lemmy.world
Loki@lemmy.world
CannaVet@lemmy.world
devve@lemmy.world
HybridSarcasm@lemmy.world
HybridSarcasm@lemmy.hybridsarcasm.xyz