We feature technical articles across the entire IT spectrum - Networking, security, operating systems, cloud, and programming.

NSM – Delayed Logs

Issue Logs received on the NSM are delayed by 6 minutes. The log viewer hangs for close to 6 minutes and then displays all the logs within a group. Also today`s log directory does not get created within /DevSvr/logs.  Solution The NSM device server does a log tuple repair for each log received from the … Read more

Bash / CGI – Premature end of script headers

Issue When trying to add a image to your CGI script you recieve the following error and the image isnt displayed. [root@localhost cgi-bin]# cat /var/log/httpd/error_log [Fri Jul 10 20:51:39 2009] [error] [client 10.2.2.5] Premature end of script headers: picture2.jpg, referer: [Fri Jul 10 20:57:57 2009] [error] [client 10.2.2.5] (8)Exec format error: exec of ‘/var/www/cgi-bin/picture2.jpg’ failed, … Read more

Check Point Upgrade to R70: status=1 Patch installation failed

Issue When upgrading to R70 on SPLAT you may receive the following error, CPwrapper: Wrapper part one completed successfully, data saved Upgrading the operating system. Preparing to upgrade Check Point Products. status=1 Exiting .. Patch installation failed. Please Note : This refers to a copied iso file which has been copied to the device and … Read more

Redhat / Fedora – No fonts found

Issue You receive the following error when trying to run an application (such as rrdtool), No fonts found; this probably means that the fontconfiglibrary is not correctly configured. You may need toedit the fonts.conf configuration file. More informationabout fontconfig can be found in …. Solution Run yum install deja* If you receive the following,  –> … Read more

Proxy ARP – SPLAT

This guide attempts to explain Proxy ARP upon the Check Point SPLAT platform. 1. What is Proxy ARP ? There are 2 ways to get a packet to a device. Route the packet to the device. Add a proxy ARP entry so that the network host answers to the ARP queries for IP addresses not … Read more

Linux – how to use the alias command

The alias command allows you to create command shortcuts within your shell. Below shows you how, move to your home directory, [root@localhost ~]# cd ~ add the alias of os which will show the output of ‘uname -a’ [root@localhost ~]# cat >> .bash_profile [root@localhost ~]# alias os=’uname -a’ Reload you environment variables for your new … Read more

PIX – BGP Advanced Protocol Inspection

Summary When passing BGP traffic through a PIX you will need to configure the PIX to disable random sequence numbers to prevent MD5 Digest mismatches on either router. Please Note : Below presumes you all ready have a policy map defined with the name of global_policy and this has already been assigned to your device … Read more

Invalid MD5 digest – BGP Traffic Through Check Point

Issue When allowing eBGP traffic through a Check Point Firewall you may receive the following error message on your BGP peered routers. (This error may occur at the point of pushing a policy to your Check Point Firewall), TCP-6-BADAUTH: Invalid MD5 digest from [Source IP]:[Source Port] to [Dest IP]:179 Solution This is down to the … Read more

Netscreen – Routing Basics / Virtual Routers / PBR

Juniper introduces a new feature to the area of routing, called Virtual Routers. The model consists of: interfaces are applied to zones and zones are applied to Virtual Routers. Virtual routers allow for you to segment routing updates in and from the firewall/router. Virtual RoutersThere are 4 different types of routing tables that you can … Read more

GNS3 Linux – Fedora Dependencies

GNS3 (Graphical Network Simulator) requires 4 installed dependencies for Fedora. Please note that this is based on GNS3 0.5.    1. Qt >= 4.3   2. Python >= 2.4   3. Sip >= 4.5   4. PyQt >= 4.1 To install all 4 in Fedora run the following command, sudo yum -y install python sip qt4 PyQt4