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Old May 13, 2012, 02:11 PM   #1
kingsapo
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Join Date: Jun 2010
Lion 10.7.4 PPTP VPN MPPE Issues

Hey people,

I recently upgraded my server from Snow Leopard Server to Lion Server, and updated to 10.7.4. I know Lion Server didn't offer a GUI for PPTP configuration before 10.7.3, but after the update I figured I'd give it a shot. I kinda wish I hadn't.

I've setup VPN through the Server app, basically leaving all the settings to their default. I'm trying to connect to the server locally, so I know port forwarding isn't the issue. I only want to get PPTP working; since one of the L2TP ports is the same as the Back to my Mac through iCloud port (I think it's 4500 or something), I wanted to go with the PPTP so I could also have Back to my Mac (don't ask why I want both).

Anyway, the issue is in connecting to the server locally, I get an error in the log file about how MPPE is required, but keys are not available. I know what MPPE is, and even followed the support doc from http://support.apple.com/kb/TS4241, but it didn't help. Client-side, I'm getting the error
Quote:
A connection could not be established to the PPP server. Try reconnecting. If the problem continues, verify your settings and contact your Administrator.
I've copied the log file below. Please let me know if I missed any information; I'm in a bit of a rush and had to type this quickly. Any help is always appreciated. Thanks!

Quote:
2012-05-13 14:29:57 EDT Incoming call... Address given to client = 192.168.1.229
Sun May 13 14:29:57 2012 : Directory Services Authentication plugin initialized
Sun May 13 14:29:57 2012 : Directory Services Authorization plugin initialized
Sun May 13 14:29:57 2012 : PPTP incoming call in progress from '192.168.1.13'...
Sun May 13 14:29:57 2012 : PPTP connection established.
Sun May 13 14:29:57 2012 : using link 0
Sun May 13 14:29:57 2012 : Using interface ppp0
Sun May 13 14:29:57 2012 : Connect: ppp0 <--> socket[34:17]
Sun May 13 14:29:57 2012 : sent [LCP ConfReq id=0x1 <asyncmap 0x0> <auth chap MS-v2> <magic 0x76ed810> <pcomp> <accomp>]
Sun May 13 14:29:57 2012 : rcvd [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x12cb3fcd> <pcomp> <accomp>]
Sun May 13 14:29:57 2012 : lcp_reqci: returning CONFACK.
Sun May 13 14:29:57 2012 : sent [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x12cb3fcd> <pcomp> <accomp>]
Sun May 13 14:29:57 2012 : rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <auth chap MS-v2> <magic 0x76ed810> <pcomp> <accomp>]
Sun May 13 14:29:57 2012 : sent [LCP EchoReq id=0x0 magic=0x76ed810]
Sun May 13 14:29:57 2012 : sent [CHAP Challenge id=0x11 <401c36015b2e670f22256c5d415e0a60>, name = "mac-mini-server.local"]
Sun May 13 14:29:57 2012 : rcvd [LCP EchoReq id=0x0 magic=0x12cb3fcd]
Sun May 13 14:29:57 2012 : sent [LCP EchoRep id=0x0 magic=0x76ed810]
Sun May 13 14:29:57 2012 : rcvd [LCP EchoRep id=0x0 magic=0x12cb3fcd]
Sun May 13 14:29:57 2012 : rcvd [CHAP Response id=0x11 <30ed187d21d0e87dd09b414cc535a12f0000000000000000622d557cb34e3baba02fdf3979d3e4eef774f2c5192d667d00> , name = "Matt"]
Sun May 13 14:29:57 2012 : DSAuth plugin: unsupported authen authority: recved ShadowHash;HASHLIST:<SALTED-SHA512,SMB-NT,CRAM-MD5,RECOVERABLE>, want ApplePasswordServer
Sun May 13 14:29:57 2012 : sent [CHAP Success id=0x11 "S=275C80AAE3A93F8EAEBCC5D14D79D9692DC925AD M=Access granted"]
Sun May 13 14:29:57 2012 : CHAP peer authentication succeeded for Matt
Sun May 13 14:29:57 2012 : DSAccessControl plugin: User 'Matt' authorized for access
Sun May 13 14:29:57 2012 : MPPE required, but keys are not available. Possible plugin problem?
Sun May 13 14:29:57 2012 : sent [LCP TermReq id=0x2 "MPPE required but not available"]
Sun May 13 14:29:57 2012 : Connection terminated.
Sun May 13 14:29:57 2012 : Connect time 0.0 minutes.
Sun May 13 14:29:57 2012 : Sent 0 bytes, received 0 bytes.
Sun May 13 14:29:57 2012 : PPTP disconnecting...
Sun May 13 14:29:57 2012 : PPTP disconnected
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Old May 16, 2012, 06:42 PM   #2
kingsapo
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Join Date: Jun 2010
Well, it's been a few days and with no response I thought I'd look for another solution. I've been trying this software called iVPN, apparently it's like a front-end to OS X's built-in VPN server. Anyway, I disabled the VPN Server from the Server app, turned on iVPN and was VPN-ing from my iPhone over 3G in notime. It's a great app, though it kinda sucks that the server can't do what it's built to do. Since VPN was the big reason I got Server in the first place, I'll probably uninstall it and stick with OS X's built-in file sharing and iVPN.
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