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Hi, perhaps you might consider to try to restart the firewall and see if it has an effect: pve-firewall restart as root on the host.

Hello ossvirt, you could try to use tcpdump to record the traffic at the different points and view it with wireshark . Or use nc (netcat) to test connections. Or use netcat and tcpdump in combination. Or look at the logs of the firewall to see rejected requests. Or try arp -n to learn something...

Hello Sunil, have tried to a diagnosis with nc, see https://en.wikipedia.org/wiki/Netcat ? Which version of Proxmox do you use? Can you reach it from the host? Which type of Box do you use (KVM or LXC)? What is network configuration in the box? With best regards, Andreas

Hello Proxmox-Staff-Members, the user friendly Proxmox-Tool has become an important part of my day-to-day work during the last year. In order to give something back I would like to ask you if you find it appropriciate consider the threads...

The solution of https://forum.proxmox.com/threads/proxmox-4-2-kvm-bridge-packet-loss.27752/ (to use VirtIO instead of Intel E1000 as Network Device Model) as been applied and the problem seems to be solved.

Hello nade, thank you for sharing your solution. I also had a packet loss problem with 4.2, see https://forum.proxmox.com/threads/flapping-network-interface-in-kvm-box-for-proxmox-4-2.27836/ After applying your solution to select VirtIO as a driver instead of Intel E1000 the interfaces on 3...

Just to clarify my point. The pattern would be that you are the master of Proxmox who provides (and ultimately destroy) the boxes b1, ... , bn. You would provide each of your partners one box bi. And they directly access that box bi without even knowing from Proxmox. And accessing a box in the...

Hello Joseph, if the box is just a head-less server what is the benefit of a graphical remote viewer? Why do you not use simple ssh via for example putty (for Windows) or the normal ssh client (for Linux)? With best regards, Andreas

Hello Joseph, have you considered just to set-up a vnc-server on each box and protect the access to the vnc-servers by the proxmox firewall? With best regards, Andreas

Hello gnome.gemini, we have realised such an inter-box communication between KVM-Boxes on different Proxmox hosts just by the standard bridge on each host. (A Jenkins server is running on one host and deploys into boxes on a different host.) For security reasons you might consider using...

Hello, first of all, thank you for providing this great software to the community! During the last year we have made great experiences with two Proxmox-Servers of version 3.4. i) Now a Proxmox-Version 4.2 has been installed on a fresh hardware at the same hoster with just a slight change in...