who_is_using_this_ip_address
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who_is_using_this_ip_address [2014/01/11 15:16] – samer | who_is_using_this_ip_address [2014/01/11 15:24] – samer | ||
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An alternative method for identifying the AS that announces a specific IP prefix consists in studying the BGP routing information. Typically, each BGP speaking router stores in a BGP table the routing announcements received for each prefix together with some protocol attributes such as the AS-PATH. This attribute contains the list of ASes traversed by the BGP announcement, | An alternative method for identifying the AS that announces a specific IP prefix consists in studying the BGP routing information. Typically, each BGP speaking router stores in a BGP table the routing announcements received for each prefix together with some protocol attributes such as the AS-PATH. This attribute contains the list of ASes traversed by the BGP announcement, | ||
- | {% img center /images/bgp-table.png | + | [{{ :bgp-table.png? |
- | However, having access to a DFZ BGP router is not easy in practice. Alternatively, | + | However, having access to a DFZ BGP router is not easy in practice. Alternatively, |
- | Let us try for example to log on the Allstream route server in Canada and identify the origin AS of 148.60.0.0/ | + | Let us try for example to log on the Allstream route server in Canada and identify the origin AS of 148.60.0.0/ |
$ telnet route-server.east.bb.allstream.net | $ telnet route-server.east.bb.allstream.net |
who_is_using_this_ip_address.txt · Last modified: 2014/02/15 23:31 by samer