cisco ccna 200-301 jobs

cisco ccna 200-301 jobs.Router(config) # interface ethernet 0 Here is another example of a standard ACL25. Router(config-if)# ip access-group 2 outThere are some problems with this ACL example, can you identify them?The first ACL statement looks like it prohibits all traffic from 192.168.1.0/24 from passing through, but it's actually useless. Don't forget that if you don't specify a wildcard mask, the default is 0.0.0.0 - which must match the specified address exactly. The problem is that there can't be a packet with a source address of 192.168.1.0, because it's a network number, not a host address. The second statement has the same problem. The third and fourth statements have no problem.As you can see, configuring ACLs requires some know-how. For the previous example, here is the modified configuration. Router(config)# access-list 2 deny 192.168.1.0 0.0.0.255 access-list 2 deny 172.16.0.0 Router(config)#0.0.255.255 access-list 2 permit 192.168.1.1 access-list 2 permit 0.0.0.0 255.255.255.255 interface ethernet 0Router(config-if)# ip access-group 1 out Router(config)#Router(config)# In the above configuration, the first statement states that any packets from network 192.168.1.0/24 should be discarded for any packet that comes from network 192.168.1.0/24. The second statement drops all traffic from the Class B network 172.16.0.0/16. The third statement allows traffic from 192.168.1.1 to pass. The fourth statement allows all traffic to pass. In fact, there is another problem with this configuration one-by-one See the first statement and the third statement. Is it possible for the third statement to be executed? The answer is no. You need to put the more specific statement in front of the less specific statement. Another thing to point out is that the address and wildcard mask of the fourth statement can be replaced with the keyRouter(config)# access-list 2 permit 192.168.1.1Router(config)# access-list 2 deny 192.168.1.0 0.0.0.255Router(config)# access-list 2 deny 172.16.0.0 0.0.255.255 permit