VPN Connection Disrupting Other Users

RouterOS General
1

Hi,

I have setup my 750GL VPN using PPTP as shown in the below steps. Everything seemed to be working normally when I connected in remotely from a Windows computer.

However, I discovered that whenever I connected in, a user on the network I was connecting to would lose his video chat session. This happens with both Facetime and Skype.

I am trying to understand how the below script would interfere with other users on the network managed by the 750GL.

Any help would be much appreciated.


VPN Setup Steps:
(Note: all other settings on the router are default)

[admin@MikroTik] /ppp secret> add name=admin service=pptp password=cmrvpn1x local-address=192.168.88.230 remote-address=192.168.88.231
[admin@MikroTik] /ppp secret> /interface pptp-server

[admin@MikroTik] /interface pptp-server> add name=pptp-in user=admin
[admin@MikroTik] /interface pptp-server> server
[admin@MikroTik] /interface pptp-server server> set enabled=yes

[admin@MikroTik] /interface pptp-server server> /interface ethernet
[admin@MikroTik] /interface ethernet> set ether2 arp=proxy-arp

[admin@MikroTik] /interface ethernet> /ip firewall
[admin@MikroTik] /ip firewall> filter
[admin@MikroTik] /ip firewall filter> add action=accept chain=input disabled=no dst-port=1723 protocol=tcp place-before=3


Thanks,

Cliff

2

That would likely be proxy-arp.

Try this.

/ppp secret> add name=test service=pptp password=test local-address=192.168.89.2 remote-address=192.168.89.3
3

Thanks, I will try this.

With the VPN addresses on a separate subnet, are there other steps I need to take for packets to route between 192.168.88.0 and 192.168.89.0?

4

You should turn off proxy-arp on the interface.

But as long as a firewall does not prevent it… routes will generate when you connect the VPN.

5

Great, thank you.

6

If it works… don’t forget Karma