I'm also experiencing some troubles with VPN.
Site A
- m0n0 1.3.X, VMWare ESXi 4.X, E1000 NICs, VPN works fine
- m0n0 1.3.X, VMWare ESXi 5.1, E1000 NICs, new hardware, VPN works fine
- m0n0 1.8.1, VMWare ESXi 5.1, E1000 NICs, VPN works fine
Site B
- m0n0 1.8.1, fresh install, VMWare ESXi 5.5, E1000 NICs, VPN do not work
Cross checking all settings on the VPN client, always getting "Error 628" from Windows 7.
A real long shot; the host hardware is different between the two servers and I noticed that the one where it is working says
Hardware crypto: Intel AES-NI at the Status - System information.
Other differencies:
- Virtual machine version; 7 vs 8 (Site A - Site B)
- Hardware NICs (although all other things that I use with m0n0 works as I expect)
Log output of one attempt to connect to Site B:
mpd: [L-1] Accepting PPTP connection
mpd: [L-1] Link: OPEN event
mpd: [L-1] LCP: Open event
mpd: [L-1] LCP: state change Initial --> Starting
mpd: [L-1] LCP: LayerStart
mpd: [L-1] PPTP: attaching to peer's outgoing call
mpd: [L-1] Link: UP event
mpd: [L-1] LCP: Up event
mpd: [L-1] LCP: state change Starting --> Req-Sent
mpd: [L-1] LCP: SendConfigReq #1
mpd: [L-1] ACFCOMP
mpd: [L-1] PROTOCOMP
mpd: [L-1] MRU 1460
mpd: [L-1] MAGICNUM ffee3270
mpd: [L-1] AUTHPROTO CHAP MSOFTv2
mpd: [L-1] MP MRRU 2048
mpd: [L-1] MP SHORTSEQ
mpd: [L-1] ENDPOINTDISC [802.1] 00 0c 29 47 85 a0
mpd: [L-1] LCP: rec'd Configure Request #0 (Req-Sent)
mpd: [L-1] MRU 1400
mpd: [L-1] MAGICNUM 527b09ce
mpd: [L-1] PROTOCOMP
mpd: [L-1] ACFCOMP
mpd: [L-1] CALLBACK 6
mpd: [L-1] LCP: SendConfigRej #0
mpd: [L-1] CALLBACK 6
mpd: [L-1] LCP: SendConfigReq #2
mpd: [L-1] ACFCOMP
mpd: [L-1] PROTOCOMP
mpd: [L-1] MRU 1460
mpd: [L-1] MAGICNUM ffee3270
mpd: [L-1] AUTHPROTO CHAP MSOFTv2
mpd: [L-1] MP MRRU 2048
mpd: [L-1] MP SHORTSEQ
mpd: [L-1] ENDPOINTDISC [802.1] 00 0c 29 47 85 a0
mpd: [L-1] LCP: rec'd Configure Request #2 (Req-Sent)
mpd: [L-1] MRU 1400
mpd: [L-1] MAGICNUM 527b09ce
mpd: [L-1] PROTOCOMP
mpd: [L-1] ACFCOMP
mpd: [L-1] LCP: SendConfigAck #2
mpd: [L-1] MRU 1400
mpd: [L-1] MAGICNUM 527b09ce
mpd: [L-1] PROTOCOMP
mpd: [L-1] ACFCOMP
mpd: [L-1] LCP: state change Req-Sent --> Ack-Sent
mpd: [L-1] LCP: SendConfigReq #3
mpd: [L-1] ACFCOMP
mpd: [L-1] PROTOCOMP
mpd: [L-1] MRU 1460
mpd: [L-1] MAGICNUM ffee3270
mpd: [L-1] AUTHPROTO CHAP MSOFTv2
mpd: [L-1] MP MRRU 2048
mpd: [L-1] MP SHORTSEQ
mpd: [L-1] ENDPOINTDISC [802.1] 00 0c 29 47 85 a0
mpd: [L-1] LCP: SendConfigReq #4
mpd: [L-1] ACFCOMP
mpd: [L-1] PROTOCOMP
mpd: [L-1] MRU 1460
mpd: [L-1] MAGICNUM ffee3270
mpd: [L-1] AUTHPROTO CHAP MSOFTv2
mpd: [L-1] MP MRRU 2048
mpd: [L-1] MP SHORTSEQ
mpd: [L-1] ENDPOINTDISC [802.1] 00 0c 29 47 85 a0
mpd: [L-1] LCP: SendConfigReq #5
mpd: [L-1] ACFCOMP
mpd: [L-1] PROTOCOMP
mpd: [L-1] MRU 1460
mpd: [L-1] MAGICNUM ffee3270
mpd: [L-1] AUTHPROTO CHAP MSOFTv2
mpd: [L-1] MP MRRU 2048
mpd: [L-1] MP SHORTSEQ
mpd: [L-1] ENDPOINTDISC [802.1] 00 0c 29 47 85 a0
mpd: [L-1] LCP: SendConfigReq #6
mpd: [L-1] ACFCOMP
mpd: [L-1] PROTOCOMP
mpd: [L-1] MRU 1460
mpd: [L-1] MAGICNUM ffee3270
mpd: [L-1] AUTHPROTO CHAP MSOFTv2
mpd: [L-1] MP MRRU 2048
mpd: [L-1] MP SHORTSEQ
mpd: [L-1] ENDPOINTDISC [802.1] 00 0c 29 47 85 a0
mpd: [L-1] LCP: SendConfigReq #7
mpd: [L-1] ACFCOMP
mpd: [L-1] PROTOCOMP
mpd: [L-1] MRU 1460
mpd: [L-1] MAGICNUM ffee3270
mpd: [L-1] AUTHPROTO CHAP MSOFTv2
mpd: [L-1] MP MRRU 2048
mpd: [L-1] MP SHORTSEQ
mpd: [L-1] ENDPOINTDISC [802.1] 00 0c 29 47 85 a0
mpd: [L-1] LCP: SendConfigReq #8
mpd: [L-1] ACFCOMP
mpd: [L-1] PROTOCOMP
mpd: [L-1] MRU 1460
mpd: [L-1] MAGICNUM ffee3270
mpd: [L-1] AUTHPROTO CHAP MSOFTv2
mpd: [L-1] MP MRRU 2048
mpd: [L-1] MP SHORTSEQ
mpd: [L-1] ENDPOINTDISC [802.1] 00 0c 29 47 85 a0
mpd: [L-1] LCP: SendConfigReq #9
mpd: [L-1] ACFCOMP
mpd: [L-1] PROTOCOMP
mpd: [L-1] MRU 1460
mpd: [L-1] MAGICNUM ffee3270
mpd: [L-1] AUTHPROTO CHAP MSOFTv2
mpd: [L-1] MP MRRU 2048
mpd: [L-1] MP SHORTSEQ
mpd: [L-1] ENDPOINTDISC [802.1] 00 0c 29 47 85 a0
mpd: [L-1] PPTP call terminated
mpd: [L-1] Link: DOWN event
mpd: [L-1] LCP: Close event
mpd: [L-1] LCP: state change Ack-Sent --> Closing
mpd: [L-1] LCP: SendTerminateReq #10
mpd: [L-1] LCP: Down event
mpd: [L-1] LCP: LayerFinish
mpd: [L-1] LCP: state change Closing --> Initial
mpd: [L-1] Link: SHUTDOWN event
mpd: [L-1] Link: Shutdown