PPTP L2TP VPN 500,1723

References

New References

• http://0daysecurity.com/penetration-testing/enumeration.html
• PSK Cracking using IKE Aggressive Mode: http://www.ernw.de/download/pskattack.pdf
• Penetration Testing IPsec VPNs: https://www.symantec.com/connect/articles/penetration-testing-ipsec-vpns
• Scanning and probing a VPN (ikescan): https://www.radarhack.com/dir/papers/Scanning_ike_with_ikescan.pdf