Practical documentation and technical guides on network security, firewalls, Linux systems, monitoring, and automation.
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A cipher suite is a set of algorithms used within a SSL/TLS session to provide data integrity, authentication and confidentiality for communication between a client and a server. Each cipher suite contains a, Key Exchange algorithm – Used in the creation of a secret key which is used within the bulk encryption process. Also known … Read more
Below shows you how to create a dictionary using keys from list items using list comprehension. From this we can also set a default value. >>> keys = [‘a’,’b’,’c’,’d’]>>> { x:False for x in keys }{‘a’: False, ‘c’: False, ‘b’: False, ‘d’: False}
Introduction Caching is one of the key optimisation methods in HTTP. It can reduce both network overhead and page load times, resulting in an improved experience for the client. Within this article we will look the various headers and options available in both HTTP 1.0 and HTTP 1.1. HTTP 1.0 The caching mechanism within HTTP … Read more
There are times during migrations, database restores etc that you will need to export and import your MySQL database. Below shows you the commands required to achieved this. Note : This article is meant as a reference point rather then a full blown article. Export mysqldump -u root -p {database} > db.sql Import mysql -u … Read more
Within this article we will provide the steps required to enable IPv6 on a Juniper SRX device. IPv6 Forwarding First of all we enable IPv6 forwarding. Once this is added you will need to reboot the device. set security forwarding-options family inet6 mode flow-based You can confirm that IPv6 forwarding is enabled once the device … Read more
Within this article we will show you the commands to show the status of the serial cable i.e whether it is connected without the need to physically check the device. Commands The follow commands shows the status that the failover daemon detects on the serial cable from its failover peer. Version Command 10.x b failover … Read more
Issue You may observe GTM Monitors failing with a message of ‘state: timeout’ within the logs messages. On further investigation you find that though the GTM is trying to build the connection (i.e sending the SYN), there is no response (SYN-ACK) from the destination. Resulting in the probe attempt failing. Reason The reason for this … Read more
The ability to configure EtherChannels on ASA models 5510 and above was introduced within 8.4/8.6. An Etherchannel provides a method of aggregating multiple Ethernet links into a single logical channel. Within this article we will provide the steps required to create an Etherchannel link on the Cisco ASA along with providing the main troubleshooting/show commands. … Read more
In order to mitigate the Poodle vulnerability on the Brocade ADX SSLv3 must be disabled. However this can only be achieved via the code release 12.4s, which disables SSLv3 completely. All code versions prior to this do not have any method or option to disable the SSLv3 protocol. HealthChecks On the ADX there are 2 … Read more