The Internet routing security story of the past decade has largely been about fixing route origins. RPKI Route Origin Validation (ROV) gave operators a cryptographic way to verify that the AS announcing a prefix was actually authorized to do so....
Distributed denial-of-service (DDoS) attacks can be a major threat to the availability and security of networks. These attacks can overwhelm network resources...
In the previous article, we described different DDoS attacks and their impact on network infrastructure. We focused on the BGP flowspec (BGP-FS) based DDoS...
When it comes to distributed denial-of-service (DDoS) attacks, they are far from a downward trend. Although the popularity of certain types of DDoS attacks...
When there is a change in the reachability of one or more prefixes, BGP needs to do some work to adapt to that change and reach a new stable state. This is...
OSPF and BGP: Differences and Interactions When it comes to routing protocols, two of the most popular are OSPF (Open Shortest Path First) and BGP (Border...
In TCP, flags indicate a particular connection state, provide some additional helpful information for troubleshooting purposes, or handle control of a...
When it comes to IPv6, there are several categories of IPv6 addresses, each with its own use case. For example, IPv6 link-Local addresses are intended for...
BGP blackhole filtering is a routing technique used to drop unwanted traffic. Black holes are placed in the parts of a network where unwanted traffic should...
Modern networks are getting increasingly complex. So many things can go wrong with them. Business can suffer, and that is something we definitely want to...
Simple Network Management Protocol (SNMP) is a network application layer protocol, initially developed for network management but is now mainly used for...
BGP community attribute is a transitive optional attribute that we use for tagging (marking) a set of prefixes sharing a common property. Every BGP update...
The Internet consists of Internet Service Providers (ISPs) of all shapes and sizes. ISPs have two options when it comes to connecting to the Internet. They...