PPTP from Proxmox

adambenk

Renowned Member
Apr 14, 2015
16
0
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Hi everyone!

Here is my configuration.
1 Proxmox host with 1 VM, host is behind a router.

PROXMOX:
Datacenter - Firewall configuration:
IN ACCEPT TCP 8006
IN ACCEPT SSH
IN ACCEPT PING
IN DROP
Options: input policy: DROP
output policy: ACCEPT


VM: OS windows 7Pro
Firewall configuration:
IN ACCEPT RDP
IN ACCEPT PING
IN DROP
Options: input policy: DROP
output policy: ACCEPT

I want to make a PPTP vpn connection to the internet from the VM.
If FIREWALL on Datacenter is DISABLED (firewall - options - firewall=no) VPN is working great.
If FIREWALL on Datacenter is ENABLED, vpn won't connect. Error 806: GRE protocol is blocked.

Protocol forward (47) on Proxmox (how?) or someting else?

Please help!!!
Thank You
 
If FIREWALL on Datacenter is ENABLED, vpn won't connect. Error 806: GRE protocol is blocked.

Protocol forward (47) on Proxmox (how?) or someting else?

Set GRE protocol (47) to ACCEPT for both in and out.
 
It's WORKING !!!!!!!!!
It was enough only:
IN ACCEPT GRE - in VM Firewall.

Thanks Richard !!
 
Completion:

The complete solution is:
IN ACCEPT GRE - in VM Firewall
and
modprobe nf_conntrack_proto_gre

Thanks again!