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    [SOLVED] Can't access CT/VM via SSH with some routers (but ping works and they have internet access)

    Allright, I find the issue. Turns out, if you use "/32" to declare the CT ip's, it's not good. Using "/24" solved everything. I also found out that I don't have to specify the gateway when using "/24", it automaticaly assumes it's .1 from my understanding. No idea why SSH was the only thing...
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    [SOLVED] Can't access CT/VM via SSH with some routers (but ping works and they have internet access)

    I turned it off completely, it didn't change anything. I have a computer available for testing. I'll install a debian machine and retry the ssh from there (to completely remove the "windows issue" option). If it doesn't work, I'll reinstall proxmox on that machine, spawn a CT and retry from...
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    [SOLVED] Can't access CT/VM via SSH with some routers (but ping works and they have internet access)

    I was able to try without any router. The CT's doesn't even ping. See attachment for the full results and the three situations : 1) With my initial setup (fritzbox router) where everything is working 2) without any router where the CT's don't ping (and ofc, ssh doesn't work) 3) with OPNsense...
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    [SOLVED] Can't access CT/VM via SSH with some routers (but ping works and they have internet access)

    See attachments about the firewall. All the firewalls are disabled (it was the first thing I tried a couple of weeks ago). I don't have any fw rule (they are all empty) I had no idea it could work like that !! I can't disconnect my router right now, tomorrow I'll try for sure and let you know...
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    [SOLVED] Can't access CT/VM via SSH with some routers (but ping works and they have internet access)

    I rebooted the host before retrying, yes. How am I suppose to connect to my CT's from my PC if there is no router involved ? I don't have any managed switch.
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    [SOLVED] Can't access CT/VM via SSH with some routers (but ping works and they have internet access)

    It didn't help. I've attached some screenshots so you can check that I'm not mad or something ^^' One when it fails (tried to login to a CT : 192.168.1.116) One when it's working (tried to login to my syno : 192.168.1.100) I've already mentionned it : I can login to the host, ssh is working...
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    [SOLVED] Can't access CT/VM via SSH with some routers (but ping works and they have internet access)

    VM or CT, SSH don't work when I'm using an other router than my Fritzbox. I just tried SSH with my synology. I switch to my router (OPNsense), enabled SSH on my syno, and it's working fine, I can login to my synology via SSH, when using OPNsense (same port, obviously). So the issue is...
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    [SOLVED] Can't access CT/VM via SSH with some routers (but ping works and they have internet access)

    Yes they are. Router => 192.168.1.1 My PC => 192.168.1.42 My CTs => 192.168.1.100-115
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    [SOLVED] Can't access CT/VM via SSH with some routers (but ping works and they have internet access)

    That's exactly it.
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    [SOLVED] Can't access CT/VM via SSH with some routers (but ping works and they have internet access)

    Ho my bad, completely forgot the most important information ^^' Everything is on my LAN (my PC and my proxmox server). So from LAN to LAN. I'm trying to connect to my CT's directly via their LAN address (192.168.X.X), nothing else. Of course, my first idea was to blame the firewall as well...
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    [SOLVED] Can't access CT/VM via SSH with some routers (but ping works and they have internet access)

    EDIT : SOLUTION here => https://forum.proxmox.com/threads/cant-access-ct-vm-via-ssh-with-some-routers-but-ping-works-and-they-have-internet-access.84334/post-371109 -- Hello, I'm facing an issue and I have no idea how to fix it. I'm assuming it's coming from Proxmox, but I'm not even sure...
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