Post Mavericks (server) upgrade, vpn has stopped working. Any suggestions?

I tired this and still not working. I have disabled bac to my mac in icloud settings but I see that remote management is still enabled (vnc) and so is file sharing in sharing and printer sharing.

Have you disabled UPNP using your router's web interface? Its a setting on the router not the mac or iCloud. I had to turn this off on my Netgear router for VPN inbound from external to work correctly.

Yes I disabled this in the routers web interface. I appreciate the advice though because it was enabled.

Success here - update fixed my external L2TP connectivity, no PPTP or Directory Accounts required. Of course, now I have to decide if I switch back to OS X Server or keep using my home-rolled Debian/racoon/IPSEC VPN server. It's more to maintain, but it's also a lot faster and has proper support for DNS default domain names.

I was finally able to resolve my problem by rebooting my modem. Now however if I make a change in the VPN settings I have to again reboot my modem. I don't think this is normal and is quite annoying however at least I have my VPN up and running.

I am having a similar issue, these logs are from console when trying to connect to VPN

6/23/14 12:32:01.987 PM pppd[2114]: pppd 2.4.2 (Apple version 727.90.1) started by cmiller, uid 502

6/23/14 12:32:02.078 PM UserNotificationCenter[2117]: *** WARNING: Method userSpaceScaleFactor in class NSWindow is deprecated on 10.7 and later. It should not be used in new applications. Use convertRectToBacking: instead.

6/23/14 12:32:11.004 PM pppd[2114]: L2TP connecting to server 'office.besentient.com' (XXX.XXXXXX)...

6/23/14 12:32:11.006 PM pppd[2114]: IPSec connection started

6/23/14 12:32:11.025 PM racoon[2118]: accepted connection on vpn control socket.

6/23/14 12:32:11.026 PM racoon[2118]: Connecting.

6/23/14 12:32:11.026 PM racoon[2118]: IPSec Phase 1 started (Initiated by me).

6/23/14 12:32:11.027 PM racoon[2118]: IKE Packet: transmit success. (Initiator, Main-Mode message 1).

6/23/14 12:32:11.027 PM racoon[2118]: >>>>> phase change status = Phase 1 started by us

6/23/14 12:32:14.027 PM racoon[2118]: IKE Packet: transmit success. (Phase 1 Retransmit).

6/23/14 12:32:17.281 PM racoon[2118]: IKE Packet: transmit success. (Phase 1 Retransmit).

6/23/14 12:32:20.574 PM racoon[2118]: IKE Packet: transmit success. (Phase 1 Retransmit).

6/23/14 12:32:21.026 PM pppd[2114]: IPSec connection failed

6/23/14 12:32:21.027 PM racoon[2118]: IPSec disconnecting from server XXXXXX.XXXX

6/23/14 12:32:21.028 PM racoon[2118]: glob found no matches for path "/var/run/racoon/*.conf"

Installed Mavericks last night. PPTP VPN that worked prior to upgrade fails to connect. I ran Disk Utility and chose Repair Disk Permissions. After completion VPN works.

I was having similar issues = Mavericks with Server 3 won't allow iOS VPN. Found this: Native iOS L2TP VPN not working on Lion Server and removed special characters from the shared secret. Now everything's working! I'm so relieved.

NIK