Routing advertisement filtering
BGP security: IP network interconnections security
Article REF: TE7531 V1
Routing advertisement filtering
BGP security: IP network interconnections security

Author : Sarah NATAF

Publication date: May 10, 2015 | Lire en français

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4. Routing advertisement filtering

In order to avoid or limit prefix spoofing and associated traffic detour, routing inconsistencies and potential BGP code implementation errors, all eBGP sessions on the Internet must be configured with appropriate route filtering according to various criteria. This section describes best practices for configuring BGP sessions on the Internet.

4.1 AS path filters

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4.1.1 Filters on AS PATH length

On the Internet, the AS graph is relatively concentrated. On some very well-connected networks, more...

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