June 2005
Intermediate to advanced
312 pages
11h 13m
English
Content preview from MPLS VPN Security
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General Router Security 141
sending the datagrams with source routing options. Also note that source-routed packets
allow the circumventing of ACLs, for example where the ACL is looking into the source
and destination header field, only while ACLs are effectively irrelevant for source-routed
packets. A Cisco router with no ip source-route set never forwards an IP packet carrying
a source routing option. You should use this command unless you know that your network
needs source routing.
NOTE There are many other types of filters or schemas that need to be implemented in order to
prevent attacks or security leaks, such as a close-group design, which ...
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