How to configure the firewall for VPN PPP connections?

[Gordon Messmer]

On 02/18/2015 12:54 PM, Paul Smith wrote:
> How should one configure the firewall in order to be able to connect
> from my machine (Fedora 21) to another machine (MS Windows) via VPN
> PPP? Perhaps, after some updates, the possibility of establishing such
> a VPN PPP has become blocked by the firewall.

What type of VPN?  Both PPTP and IPSec/L2TP use ppp.  Neither should be 
affected by stock firewall rules if the Fedora machine is initiating the 
connection.

You should check /var/log/audit/audit.log (and/or "setenforce 
permissive" and test again) for SELinux related errors.  Otherwise, 
probably /var/log/messages and /var/log/secure will have useful data.