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

Based on this I thought I would try replacing /usr/sbin/racoon with the version from Mountain Lion and it seems to be working.

Same problem here. VPN server worked on ML, but after upgrade to Mavericks it does not respond to L2TP and does not validate to PPTP requests. ;-(

So I tried your solution and moved from a time-machine backup of my

MountainLion copy of -r-xr-xr-x 1 root wheel 1279376 racoon to my Mavericks apple server;

rebooted the server, and Ill-be-darned the L2TP connection does work from my workstation and IOS devices!!!

But the PPTP connection still fails.

Eh, good enough for me, thanks!

Thanks so much for posting this, not sure why I didn't think about trying this - Worked like a champ!

Thanks that worked! Though if i try to connect with an "services only" account, it would crash Mavericks.

"services only" ? I connected with an 'open-directory' username that has no home-dirs, as the user for the VPN connection. And as a 'real' user on the client machine.

But you are correct, this is a hack and may cause other problems.

I opened a case with Apple enterprise support. Wonder how long a fix will take......tick...tock....tick....tock.

For all the good it will do I'm adding a "me too." While running on Mountain Lion I had no problem. "Upgrade" to Mavericks and VPN stopped working when connecting externally and internally. I also can't connect to my calendar & contact servers externally.

No changes to the router. Double-checked all ports open. Rebooted everything I could find including the dogs.

I'm seeing similar logs as others such as:

server.private servermgrd[64202]: Failed to connect to the IGD, no status info available, error is Error Domain=com.apple.ACPDevice Code=-6753 "The operation couldn\u2019t be completed. (com.apple.ACPDevice error -6753.)"

I'm not a security hack so paying money for Server was my way of obtaining services without the steep learning curve. That's no longer the case, I guess. Silly me.

For others who need L2TP VPN and don't want to wait for Apple's fix,

Replacing only Mavercks's /user/sbin/raccoon with Mountain Lion's earlier version (extracted from Time Machine) worked perfectly for me for fixing the totally broken L2TP VPN caused by the recent OS X Server update. I have seen no problems and can happily connect from all devices from external NAT or internal.

I wish I knew what was going wrong for me - I've tried to do this a dozen times and all I get is a constantly-crashing racoon (even after a reboot and all). I'm guessing something is now utterly hosed in my VPN settings, especially seeing as I've been trying things like crazy to get this to work. Any way (short of a full re-install or reverting to Time Machine backup) that I can reset everything to do with the VPN service?

Upgraded ML server to Mavericks and VPN stopped working: Attempting to connect would fail within 30-40 seconds whereas with ML Server, it was rock solid. For some reason, the symptoms reminded me of issues long ago with one of the System Accounts lacking proper access to services. With Server App connected to the Mavericks server, Click on Users, then view System Accounts ("View->Show System Accounts" in menu). My list includes "VPN MPPE Key Access User" and it said "Not Allowed" next to it. That's suspicious. Edit that User's "Access to Services" and ensure that "VPN" is clicked...it wasn't for me. That cleared it up immediately. Mavericks VPN server is now rock solid. YMMV.

Edit that User's "Access to Services" and ensure that "VPN" is clicked...

Tried it. Unfortunately it did not work for me.

@Scotty R: Odd, my system has no VPN-related users whatsoever under system accounts, which makes such a fix hard to implement. Anyone know what would kick off fixing that user? Simply disabling/re-enabling the VPN and PPTP did nothing.

No luck for me. I checked that all users has already been enabled to access VPN, but connection was only by chance and only one account would be able to login at a time. Further attempt to connect to VPN when there is already a user connected would be denied. I have only been able to log in when I was away but not when I am in the same country (Hong Kong).

Didn't work for me but many coffee shops are blocking VPN now so it's getting harder to tell.

JohnOnTheCoast - Thanks a million. I thought I was going to have to wait for Apple's fix before I could use Mavericks' VPN. I copied the raccoon folder from my test server, which was still running Mountian Lion, over to the Mavericks system, and it works like a champ (MacBook Air, iPhone, and iPad all work now)! Others pouring through this discussion should stop all of the vodoo, and follow your simple fix. Thank you again.