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SBGP (Secure Border Gateway Protocol) is a security extension to the Border Gateway Protocol (BGP), which is a routing protocol used to exchange routing and reachability information between autonomous systems (ASes) on the Internet. SBGP aims to improve the security of BGP by adding authentication and encryption to the protocol, making it more resistant to attacks and manipulation.
One of the main vulnerabilities of BGP is that it relies on trust between ASes to exchange routing information. This makes it susceptible to various types of attacks, such as route hijacking and route injection, in which an attacker can manipulate routing information to redirect traffic or disrupt network connectivity. SBGP addresses these vulnerabilities by adding security measures to the protocol, such as digital signatures and encryption, to authenticate and protect the integrity of routing information.
In addition to improving security, SBGP also aims to improve the scalability and efficiency of BGP by reducing the amount of data transmitted and the number of messages exchanged between ASes. It does this by introducing route summarization and aggregation, which allows ASes to group and represent multiple routes as a single route, reducing the size of routing tables and the amount of data transmitted.
Overall, SBGP is an important security extension to BGP that aims to improve the security and efficiency of routing on the Internet. It is an active area of research and development, and is being standardized by the Internet Engineering Task Force (IETF) as part of the Secure Inter-Domain Routing (SIDR) working group.
