VPN Monitoring This allows you to ping an IP address through the tunnel. In the event of the tunnel going down a SNMP trap will be generated. The settings can be found under “VPNs > AutoKey IKE > Edit > Advanced > VPN Monitor“. The “rekey” option will cause the Netscreen to continuously try and … Read more
Below shows you how to create a route based vpn upon a Netscreen firewall using the firewalls gui interface. This tutorial was created using the ScreenOS version 6.2.0r1.0. The encryption domain for this guide will be, Local Gateway : 1.1.1.1 Local Endpoint : 10.1.1.25/24 Remote Gateway : 192.168.1.107 Remote Endpoint : 172.28.16.0/24 Create Tunnel Interface … Read more
This script will determine which operating system is running then backup the OS accordingly, once complete it will securely send it to the manager. The script is based on R65 and all backups will be sent to “/var/tmp/backups” on the manager. Each time the backup is run it will write a system log confirming if … Read more
Below is a script will send the latest log file of the SGS (Symantec Gateway) across to an FTP server. You would need to add this to your crontab to run every hour, in the event of multiple log files being generated per day. #!/bin/sh # # This script will ftp gzip the latest sgs … Read more
RRDtool is the OpenSource industry standard, high performance data logging and graphing system for time series data. The RRDtool homepage can be found here Below shows you how to install RRDtool 1.3.1 on Redhat Enterprise Linux. Update your system [root@localhost /]# yum install cairo-devel libxml2-devel pango-devel pango libpng-devel freetype freetype-devel libart_lgpl-devel make -y Download and … Read more
This article will show you how to backup and restore your Juniper NSM. This article was written using NSM version 2008.2r1.Within NSM the HighAvailSvr contains processes that run in both HA and non-HA mode and handles database backups and a watchdog daemon to restart NSM processes in case of failure. Backup Even though you will … Read more
URG This flag indicates that the packet contains urgent data that should be processed as soon as possible. This flag is used to provide two virtual channels within one TCP connection. The URG flag is also known as out-of-band. This is usefful for a sender to present data that can overtake any bytes queued … Read more
Issue The SmartView Monitor shows the status of your gateway as “Disconnected”. It takes for ages before your gateway shows as “Connected. No AMON (Application Monitoring) packets (tcp/18192) are leaving the SmartCentre Server for the gateway. Solution This can be down to issues within the Database files for the SmartView Monitor. Below will show you … Read more
To install snmpwalk or snmpget on Redhat use the command yum install net-snmp-utilsThis will install the following binaries, [root@localhost .ssh]# snmp snmpbulkget snmpdelta snmpinform snmptable snmptrapd snmpbulkwalk snmpdf snmpnetstat snmptest snmpusm snmpconf snmpget snmpset snmptranslate snmpvacm snmpd snmpgetnext snmpstatus snmptrap snmpwalk
SPAM Spam continues to be the major threat affecting email systems today. The term Spam is used to define junk email messages that are usually sent out in high volumes to thousands of users at a time. SPAM Invasion Below contains some examples of some HTML-based filter evasion tactics, Tiny or invisible text that is … Read more