Cisco Unified Wireless Network Solutions

Cisco Systems inc. CCNP #14708 Payman Shahmir

Solution to bypass filtering...
The articles listed below will help you get started with configuring either a PPTP, IPsec pass-through, or an L2TP over IPSec VPN on a Juniper firewall.

Solution:

L2TP over IPSec

KB16075Configuring a Dial-up VPN Using Windows 7 Client with L2TP Over IPSec (without NetScreen-Remote)
KB4094(With NS-Remote)  Configuring a L2TP over IPSec Tunnel using NS Remote client
KB10939 (Without NS-Remote)  Configuring a L2TP over IPSec Tunnel using Windows XP native VPN client
KB6715Configuring L2TP only (without IPSec ) using Windows 2000 native VPN client
KB4656Conditions for Creating an L2TP Over IPSec Tunnel from Behind a NetScreen in NAT Mode

PPTP

KB12309How do I enable PPTP traffic to exit through the Juniper firewall using ScreenOS 6.1
KB4481How do I enable PPTP traffic to exit through the Juniper firewall using ScreenOS 6.0 and lower
KB5471Allow PPTP traffic inbound through a NetScreen in NAT mode with only 1 publicly available IP address
Microsoft Tech Note ms811078Installing, Configuring, and Using PPTP with Microsoft Clients and Servers
Section: Installing and Configuring PPTP on a PPTP Client

IPSec Pass-through

KB9243How to pass IPSec traffic through a Juniper Firewall at ScreenOS 5.2 and above
KB7126IPSec pass-through does not work unless an incoming policy is defined.
KB4715Configuring your firewall to allow IPSec traffic to pass through in NAT mode
KB7282Is IPSec traffic being blocked?

Purpose:
Configuration

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