I will be implementing access-lists in 3560 switch. Hope you can help me with the configuration. I'm planning to block all ports by default and only allow ports that the user need to access. The ports will be as follows, tcp - 80, 81, 8080, 25, 110, 143. For udp - 23 and port used by IP Phone.
ACLs terminate with an implicit deny everything. So, the shown examples defined the ports permitted, and block everything else. BTW, you can explicting define an ACL to block traffic too. However, since ACLs are processed in sequence, the "default" shouldn't be the first entry or you'll block all traffic.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...