A typical issue when SSL termination is performed on the load balancer is that URL redirects from the backend servers still contain a ‘http://’ prefix rather then ‘https://’ Within this article we will show the required commands for creating a Content Switching Policy that will rewrite any URL`s containing a ‘http://’ prefix to ‘https://’ for … Read more
Within this tutorial, I will show you the necessary steps required to add a custom field named ‘Version’ to your Joomla site. This field will be displayed within both the administrator console and the published article. 1. Configure Database Within phpmyadmin run the following SQL command ALTER TABLE `jos_content` ADD `vers` VARCHAR( 255 ) NOT … Read more
Within this article we will show you the necessary steps required to create a sorry page (containing an image) that will be published when there are no available pool memebers for the spefic VIP (Virtual Server). Note : This example is based upon serving a png image. Encode Image First of the image that will … Read more
The F5 LTM allows for the transmission of syslog messages using TCP connections via the use of the syslog-ng daemon. Syntax In order to configure TCP syslog the following command(s) are used, bigpipe syslog include ‘”destination d_tcp { tcp(\”<SYSLOG IP>\” port(<PORT>));};log { source(local);\ destination(d_tcp);};”‘bigpipe save all Confirmation To confirm the configuration has been added use … Read more
Issue When the transport mechnism TCP is configured for Syslog (trap logging) and the Cisco ASA is unable to reach the designated syslog server, the security appliance will prevent any further new network sessions. Solution In order to ensure that the status of a TCP-based syslog server is irrelevant to new sessions the following command … Read more
Issue Unable to open a file by just double-clicking on the file. But you can open the file if you go into Excel first. Solution You will need to turn off “Ignore other applications”. This can be found in “Tools / Options / General”.
Summary The Brocade ADX provides DoS protection within the hardware layer. This allows for a much greater total of DoS attacks to be processed.Such attacks that are recognised and protected against at the hardware layer are : deny-all fragments Fin-with-no-ack icmp-fragment ip-option land-attack large-icmp ping-of-death syn-and-fin-set syn-fragments TCP-no-flags unknown-ip-protocol xmas-tree At a software layer the following attacks … Read more
The Brocade ADX has a number of Load Balancing methods available. These are also known as predictors. Assignment Predictors can be assigned on a global level or on a per virtual server basis. Below shows the syntax:global – server predictor [BALANCING METHOD]virtual server – server [BALANCING METHOD] Types Below explains the various available … Read more
HealthCheck elements provides the ability to perform boolean based expressions against your healthchecks (AND, OR, and NOT).In this example we will configure a health check that bring up http on webserver1 if : the string STRING1 is matched within the content retrieved via a HTTP GET / from server 192.168.1.20 the string STRING2 is matched … Read more
A match-list provides the ability to content match string based values and mark the application (layer 7) based health-check as either up or down.When assigning a match-list health-check the match-list is assigned to a port policy. This port policy is then assigned to the virtual server. Steps 1. First we enable Layer 7 health-checks on … Read more