Re: [swinog] PPTP over Swisscom DSL centro grande

Hi,

On Fri, Nov 20, 2015 at 02:28:00PM +0000, Daniel Borer wrote:

Is there a known issue with centro grande dsl router and PPTP VPN over swisscom net? We have several customers that can???t establish a connection any more - since about 2 or 3 weeks.

I don't know, but when you mention PPTP VPN I'd just like to point out that this has been totally broken last year, so it's about as good as transmitting your data in plain text...

Technically, it might be due to the GRE tunnel used by PPTP - and if there is a carrier grade NAT involved, they usually fail to handle this.

I'd recommend going from PPTP VPN to OpenVPN - it is much more robust to mistreatment by NATs, and more secure as well.

Gert Doering -- NetMaster