I'm trying to understand access list’s mechanism on Extreme switch Summit300-48. Want to deny anything but TCP on specific port. So settings such commands:
create access-mask port_mask ports precedence 25000<br>create access-list denyall port_mask ports 1:43 deny create access-mask ipproto_mask ip-protocol ports precedence 15000 create access-list allowTCP ipproto_mask ip-protocol TCP ports 1:43 permit
And It doesn’t work. It looks like all incoming traffic on port 1:43 is blocked. ACL generally work on this switch. For example I could block all TCP and open only for specific IP. What am I doing wrong? Help me please.