IPSec is a framework of symmetric encryption of IPv4 protocol which is good for VPN creation etc. Parts of the IPSec are Internet Key Exchange (binding all the pieces together), Diffie-Hellmanalgorithm (for secure key exchange) and symmetric pre-shared key or certificate based authentication. This main three components make IPSec very reliable and very difficult to break into (even though some of the algorithms are weak/vulnerable).
RFC2544 Testing explained
This next article in this mini-series about testing Ethernet/IP networks I will write about one of the most common test – the RFC2544 ”Bench-marking Methodology for Network Interconnect Devices”. The purpose of this test is quite often misunderstood even though it is clearly stated in the introduction of the standard itself. So let’s start with clarifying what this testing suite is and what it should be used for.
Bit Errror Rate Test (BERT) explained
This article will be rather short in comparison with the others in the mini-series about various Ethernet/IP testing methods but it is one that is necessary as Bit Error Tests have a long tradition in telco environment (circuit based networks) but are still quite valid even in nowadays packet networks – at least for some specific cases. So without further delay let start with some theory behind the testing and some practical use followed by some use cases and best practices.
Using vconfig to set vlan tagged interface with 802.1p CoS priority bits set
This is just quick how-to on setting up vlan interface on a Linux system. As this is in lengths described elsewhere I will stick just to the commands and brief explanations.