Table 10-4 lists the LSA types and their descriptions for reference; following the table, each type is explained in more detail, in the context of a working network. Table 10-4 OSPF LSA Types Before diving into the coverage of LSA types, two more definitions are needed: ■ Transit network—A network over which two or more OSPF routers have become neighbors, so traffic can transit from one to the other. ■ Stub network—A subnet on which a router has not formed ..
Overriding the Defaults for Login Security
The console, vty, and aux (routers only) lines can override the use of the default login authentication methods. To do so, in line configuration mode, the login authentication name command is used to point to a named set of configuration methods. Example 21-6 shows a named group of configuration methods called for-console, for-vty, and for-aux, with each applied to the related login method. Each of the named groups defines a different set of authentication methods. Example 2..
Now that you have a basic understanding of what a VPN is, let's discuss the components that make up a traditional VPN. Not every VPN implementation will include any or all of these components. Plus, based on the requirements listed in your security policy, you might not need all of these components. Therefore, you need to examine your security policy to determine which VPN implementation (or implementations) has the necessary components to meet your security policy's requirem..
Starting with IOS Version 12.4(2)T, Cisco introduced support for stronger encryption capabilities. To enable 3DES use the following command: Router1#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router1(config)#snmp-server user wbrejniak ORAROV3 v3 auth md5 authpass priv 3des privpass Router1(config)#end &n..
Now that you have reviewed, from a generic perspective, how an IP routing protocol’s data structure interacts with a router’s IP routing table, consider the specific data structures used by EIGRP, as described in Table 6-4.
