Juniper : Netscreen Remote Dial-UP VPN with AD Radius Authentication and route based VPN / tunnel interface
The following procedure explains how to set up a Juniper ScreenOS based firewall to accept Netscreen Remote Client VPN connections and authenticate users using Active Directory (Radius via Windows 2003 IAS or Windows 2008 NPS). We’ll assume that all traffic to from the client to the 192.168.0.0/16 networks needs to pass via the client VPN […]
Using Fedora 9 as an OSPF / BGP router (Quagga / Zebra) and set up BGP between Linux and Juniper ScreenOS
In this post, I’m going to show you how to set up a Linux host (Fedora Core 9) and use it as a BGP enabled router. In order to fully understand the setup & configuration, please have a look at this blog post first, because I’ll use the setup in that post as a foundation […]
Using OSPF on Juniper Netscreen Firewalls
Introduction to OSPF OSPF is a link-state (dynamic) routing protocol that operates within an autonomous system. OSPF falls within the group of Interior Gateway Protocols. Devices that use OSPF will advertise link state information. The devices generate Link State Advertisements (LSA’s) for directly connected links, and will forward LSAs received from other devices to ensure […]
Building IPSec VPN with Juniper Netscreen ScreenOS (CJFV)
A few days ago, I have posted some ScreenOS basics on this blog. Today, it is time to take it one step further and to look at setting up and especially troubleshooting IPSec VPN’s with Juniper Netscreen devices. The need for VPN A VPN can be defined as the simulation of a private connection by […]
Juniper Firewall ScreenOS Basics (CJFV)
ScreenOS Concepts & Terminology The following document is based on ScreenOS v5.4.0r7.0 – Interface = connection to a specific subnet. An interface is assigned an IP address only if firewall is operating in L3 mode. Default interface names can vary on different Netscreen devices. – Zone : logical grouping of subnets and interfaces. All devices […]
Juniper : Setting up an IPSec VPN tunnel between a Juniper Netscreen firewall/vpn device and a Cisco VPN device
Today, I will explain the (easy) steps to set up a route-based IPSec VPN tunnel between a Juniper Netscreen firewall/VPN device and a remote Cisco device (such as Cisco ASA) If you are looking for more generic information on IPSec and building VPNs with Juniper, take a look at my blog post on VPNs with […]
Using Active Directory and IAS based Radius for Netscreen WebAuth authentication
As most of the bigger players in the firewall market, Juniper/Netscreen SreenOS based firewalls allow you to use/enforce/require authentication for various reasons : Admin login Client VPN Authentication to open a specific rule on the firewall In a default configuration, ScreenOS uses a local user account database for all types of authentication listed above. In […]
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