No internet connection in VM machine

fquirogam

New Member
Nov 13, 2015
2
0
1
Hi, I have a host server with a PROXMOX installation, then I've created a VM machine, but I can't reach an IP so far from my host machine.

This is my network configuration:
Code:
- HOST
  -vmbr0 with the Public IP

- vmbr1  

   auto vmbr1iface vmbr1 inet static
        address  192.168.0.254
        netmask  255.255.255.0
        bridge_ports vmbr0
        bridge_stp off
        bridge_fd 0
        post-up echo 1 > /proc/sys/net/ipv4/ip_foward
        post-up iptables -t nat -A POSTROUTING -s '192.168.0.0/24' -o vmbr0 -j MASQUERADE
        post-down iptables -t nat -D POSTROUTING -s '192.168.0.0/24' -o vmbr0 -j MASQUERADE
        post-up iptables -t nat -A PREROUTING -i vmbr0 -p tcp --dport 2222 -j DNAT --to 192.168.0.1:22
        post-down iptables -t nat -D PREROUTING -i vmbr0 -p tcp --dport 2222 -j DNAT --to 192.168.0.1:22


- VM
  bridge with vmbr1
  IP 192.168.0.1
  netmask 255.255.255.0
  gateway 192.168.0.254
With this configuration I can ping the host public ip address, but i can't ping anyother external IP
 

McLaren

New Member
Nov 9, 2015
4
0
1
Hi, I have a host server with a PROXMOX installation, then I've created a VM machine, but I can't reach an IP so far from my host machine.

This is my network configuration:
Code:
- HOST
  -vmbr0 with the Public IP

- vmbr1  

   auto vmbr1iface vmbr1 inet static
        address  192.168.0.254
        netmask  255.255.255.0
        bridge_ports vmbr0
        bridge_stp off
        bridge_fd 0
        post-up echo 1 > /proc/sys/net/ipv4/ip_foward
        post-up iptables -t nat -A POSTROUTING -s '192.168.0.0/24' -o vmbr0 -j MASQUERADE
        post-down iptables -t nat -D POSTROUTING -s '192.168.0.0/24' -o vmbr0 -j MASQUERADE
        post-up iptables -t nat -A PREROUTING -i vmbr0 -p tcp --dport 2222 -j DNAT --to 192.168.0.1:22
        post-down iptables -t nat -D PREROUTING -i vmbr0 -p tcp --dport 2222 -j DNAT --to 192.168.0.1:22


- VM
  bridge with vmbr1
  IP 192.168.0.1
  netmask 255.255.255.0
  gateway 192.168.0.254
With this configuration I can ping the host public ip address, but i can't ping anyother external IP
I haven't studied your configuration beyond noticing that you are missing a new-line (return or linebreak) in the definitions for vmbr1. Just after "auto vmbr1" you should have a new line, yes? Again, I only gave this a cursory look, and am not able to comment on it further. Best of luck.
 

fquirogam

New Member
Nov 13, 2015
2
0
1
I haven't studied your configuration beyond noticing that you are missing a new-line (return or linebreak) in the definitions for vmbr1. Just after "auto vmbr1" you should have a new line, yes? Again, I only gave this a cursory look, and am not able to comment on it further. Best of luck.
actually, that is a typo error, in my configuration I have the new-line
 

jmsalomr

New Member
Jul 4, 2019
6
1
3
43
Is that happening with the pve-firewall enabled? Have you tried disabling the firewall at datacenter level (and rebooting the host)?
 
  • Like
Reactions: Nadir

Nadir

New Member
Jun 26, 2019
17
0
1
22
I solved it by disabling PVE firewall and Put dedicated IP address from my network. This setting was done in VM Operating System. I setup static IP in Windows which was installed in Virtual Machine and then i was able to access internet.
 

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