Internet Group Management Protocol (IGMP) is a communication protocol that multicasts messages and information among all member devices in an IP multicast group. Traffic is sent to a single MAC address but is forwarded out (via the local multicast router) to multiple hosts via multicast. It can be effectively used for gaming and showing online … Read more
In order to embed an SWF into a Word 2007 Document please follow these steps : Click the Microsoft Office Button on the top left corner. Click Word Options at the bottom of the panel Select Show Developer tab in the Ribbon and click OK On the Developer tab click the icon of hammer and … Read more
NetFlow is a network protocol developed by Cisco Systems to run on a range of network devices for collecting IP traffic information. Previously only Cisco IOS routers and the Cisco 5580 ASA supported Netflow. But now with the introduction of Cisco ASA software 8.2, the complete ASA family now supports Netflow. There are 3 event … Read more
How to Configure an Redundant Interface Below shows you how to configure redundant interfaces on a Netscreen firewall. In the example below all traffic will be passed over eth1, and in event of the link failing traffic will be sent across eth2. ns5gt-> set interface redundant1 zone inside ns5gt-> set interface redundant1 ip 10.1.1.20/24 … Read more
Virtual systems allow you to divide your Netscreen firewall into multiple logical firewalls (domains).Each VSYS (Virtual System) has 3 components which can be shared. Once shared they are available to other systems, virtual systems or root. The components are: Virtual Routers Zones Network Interfaces (Shared) How Virtual Systems work There are 3 ways in which … Read more
HA Setups There are 3 main types of HA setup, they are, Active / Passive – All traffic passes the active node. In the event of failure the backup firewall is activated, and traffic flow is resumed. Active / Active – Both Firewalls share the network load. In the event of failure all traffic is … Read more
Oversimplified Executive Summary -A upgrade_export contains just Check Point configuration -A backup is an upgrade_export plus SPLAT OS configuration -A snapshot is a backup plus binary files, both Check Point and SPLAT OS -As a general rule of thumb, if your restoring on the same hardware a snapshot would be the easiest to use since … Read more
In order to rekey a Netscreen VPN you will need to either clear the phase 1 or phase 2 “keys” from the gateway. Phase 1 being the IKE cookies and phase 2 being the SA`s (Security Association). To see an overview of your VPN`s run the command, `get vpn` In order to find the current … Read more
Below outlines Netcreens Attack Detection and Defense. This is by no means a full guide by acts as a general summary to the various terms and technologies. SCREEN Features legacy security protection, such as SYN, UDP and ICMP floods, Port scans and certain OS-specific DoS attacks. Deep Inspection Allows for inspection at the application layer … Read more
Below will show how to create a basic Remote Access VPN using Pre Shared Keys. This guide presumes that you already have the Netscren Remote VPN Client installed onto your local machine and was created using the following software versions : ScreenOS – 6.2.0r1.0 Netscren Remote VPN Client – 10.8.3 (Build 6) Below is an … Read more