Date registered: 25th July 2015
Aug 21
When client open WWW page Web server returns HTTP code to the browser. Below are presented types of codes with brief descriptions for specific messages.
Aug 21
In this example we going to rewrite HTTP redirect on server response. Assume that client is trying to connect to website which has been moved to different location and as a result Apache or IIS is sending HTTP response code 301 (Permanent Redirect) but we want to change it to code 302 (Temporary Redirect). There …
Aug 21
In this example we going to redirect HTTP request coming for domain.com to http://www.domain.com using basic iRule. Configuration steps: 1) Login to load balancer’s GUI 2) Go to Local Traffic -> iRules -> iRule List and click Create 3) Assign Name for iRule and paste enter irule code into Definition field. Once done press Finished. …
Aug 21
In this scenario we have two servers connected on the same VLAN so typically they will be able to communicate directly and do not pass default gateway where you could perform ACL filtering. To disallow network devices from direct communication use command “switchport protected” under interface configuration. Configuration Example: enable configure terminal ! interface FastEthernet0/1 …
Aug 20
Google hacking is nothing more than using built in ways to search or in fact query the search engine to provide specific output based on search criteria. Targeted search based on target type: INTITLE: INTEXT: INURL: FILETYPE: LINK: Funny bit: Type in Google phrase “do a barrel roll” or “zerg rush” and hit enter
Aug 20
In order to upgrade software license on Brocade ADX load balancer follow steps below: 1) Obtain and save software license file (XML file) and copy it to a TFTP server that can be accessed by the Serveriron ADX. 2) Use the console or Telnet/SSH connection to access the load balancer. 3) Issue the copy command …
Aug 20
There may be a situation when you need to recover lost login password for your load balancer. To do so follow steps below: 1) Connect console cable to serial connection and start terminal session 2) Reboot ADX and press “b” to break booting process and enter boot monitor mode. 3) Enter “no password” command to …
Aug 20
Hosting environments can be Dedicated or Cloud based. In recent years more and more organizations combine both architectures to achieve scalability, performance and cost reduction. Hosting company called Rackspace who developed Open Stack and is one of leading providers of Cloud solutions offers hybrid solution called RackConnect. In summary RackConnect provides physical link between dedicated …
Aug 20
In our example we going to restrict number of connection coming from outside interface (Internet) on port 80 and 443 to local environment. Setting up limitation will protect internal WEB servers against receiving too many connections such as DDOS attacks and SYN attacks. We limit maximum number of established connections to 1000. Embryonic (half-open) connection …
Aug 20
Application load balancers provide many functions in hosting environment, one of the most typical is SSL offloading. Instead of using CPU and RAM memory on WEB server you can use LB (with appropriate license) to provide secure connection to client. In this example we are going to encrypt traffic between client and Brocade ADX load …
