firewall

During IP changes of multiple hosts I noticed that MAC and IP filters were no longer functional in my configuration. While trying to understand why this behavior changed from when I initially set up IP filtering I noticed that ebtables rules are no longer created when the firewall is disabled on...

Hi, I have a mail server running in a guest vm I can revive mail but cant send them. when trying telnet mailsec.protonmail.ch 25 from the guest it wont connect but from the host it works. connect to mailsec.protonmail.ch[185.205.70.129]:25: Connection timed out when i ping mailsec.protonmail.ch...

Hello everyone, today we had a issue on one of our 3 Nodes Cluster, that the VMs suddenly doesn't had any Internet connectivity anymore. After migrating the Virtual Firewalls to another Node, the issue was solved and after I restarted the node, the problem was solved as well. The only thing I...

Hey guys, I recently wanted to switch to Proxmox and I am struggeling with connecting to my services. What is working: VM is running and can be accessed via noVNC in the Proxmox web interface Proxmox host can be SSH into VM can be SSH into I can access http (p80) so I can see my nginx success...

Good morning, I have a problem which I detail here: I have set up a point-to-point Wireguard tunnel but the only resource I cannot access from this tunnel is my Proxmox IP (192.168.1.116). The tunnel is well configured as well as its routing since I can access other resources such as HPE-iLO...

Hi I just wanted to set up firewalls like showcased in many of the youtube videos. Added the following datacenter rules: Enabled firewall on datacenter, node and vm. When experimenting on datacenter level traffic to the nodes can be controlled and for example ssh is currently off, this can...

Hi there, Current Situation: We have a Nextcloud install with about 1000 users (but many are inactive). Everything is currently running on a Debian bare metal server, with caddy as a reverse proxy and Nextcloud (and other services) in Docker behind. Our current server (4 cores, 32 GB RAM, no...

Hi, I'm new, but I thoroughly go through dozens and dozens of threads already on the proxmox forum. I know I know it is a subject which has been asked before many times but without a very good answer. 1/So I've tried to block the 111 and the 2049 ports on each of my node on the pve part of...

Hallo Community, ich stehe vor einem Problem und hoffe auf eure Unterstützung. Ich habe kürzlich eine SSD in meinen Laptop eingebaut, auf der ein Proxmox-Server installiert war. Alles funktionierte einwandfrei, bis ich die SSD in einen anderen PC eingebaut habe. Seitdem habe ich keine...

Hello, I am running Proxmox VE 8.1 and I find myself in a really difficult situation regarding NAT. Important to mention: I already searched through Proxmox documentation and similar issues here on the forum but I didn't find anything that matched my specific case, or that, with a few tweaks...

Hallo, I've a cluster with multiple containers. Two of them are lamp with public ip configured. The host have a public ip also. If i NMAP the proxmox hosts from the VM I get those ports opened: 22/tcp open ssh OpenSSH 8.4p1 Debian 5+deb11u3 (protocol 2.0) 3128/tcp open http Proxmox...

General question: I have a /28 subnet and am planning (as i have not many servers and vms) to give each of my vms a subnet ip. I already got this working, to a point, where i had internet, but i had no firwall whatsoever. I already did this before and had a single IP with an OPNsense firewall...

Hallo zusammen, ich arbeite mich aktuell mit den verschiedenen Optionen der SDN ein. Dabei ist mir aufgefallen, dass wenn ich SNAT anharke oder generell up und down-Regeln in den Interfaces hinzufüge diese mehrfach angelegt aber nie gelöscht werden. auto default0 iface default0...

Hello. I have recently set up Proxmox VE and Proxmox Backup Server on a dedicated server off-site for backup & redundancy. I have successfully set up backup sync jobs and restored a backup of my VMs to Proxmox VE. I ran into an issue though. After creating my second non-management bridge, I can...

Hello, can someone help me with port forwarding in Proxmox VE 8.0.3? I want to configure access using my public IP address so that I can still access the virtual environment when I'm outside my network. I have set up port forwarding in my router (see images), but when I try to access it from...

Hello community, I have been trying to get this working for three weeks and I no longer know how to do it, the frustration is such that I am about to install Windows and use its Hypervisor. I have a PVE 8.1.3 instance with a single public IP without DHCP on /30. This is given to me by the...

Hi, I want to use the Proxmox VE firewall to prevent my VMs on the NAT network (vmbr1) from accessing my local network. My first thought was to use the firewall, but after enabling it, my NAT setup collapsed. I'm pretty sure I did something wrong, but I just can't see it.... I'm not a networking...

Hi, we are trying to use fail2ban on a host and use the Proxmox Firewall feature in order to block / open ports. In my PVE host (datacenter layer), I have these firewall rules configured: Security-Group "default-host" => Accept SSH (TCP port 22) Accept GUI (TCP Port 8006) Now I also have...

Hello, I am trying to access the Ubuntu VM from my Mac using the AFP protocol. If I switch off the VM's firewall, this also works. However, it does not work when I switch it on - although I have enabled the corresponding port 548 (https://support.apple.com/de-de/HT202944). I currently have the...

Dear all, I am trying to build a home server where i want to run few services, such as Nextcloud, as LXC contianers. I am relatively new to networking and before posting here i have read several pieces of documentation. Nevertheless, i still have doubts regarding the best setup for my use case...