Just apply the necessary acl's to the relevant vlan interfaces. i.e. access-list 101 permit tcp source-network mask destination-network mask eq 80 access-list 101 permit tcp source-network mask destination-network mask eq 21
int vlan 250 ip access-group 101 in if you are concerned about applying this in a production environment simply add a permit ip any any at the end of the ACL and log the other traffic to see if the ACL is being matched. Cheers, Aaron. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dan Letkeman Sent: Saturday, March 01, 2008 8:08 AM To: [email protected] Subject: [c-nsp] how to secure a vlan? What would be the best way to go about securing networks on 3560 switches? Currently i'm trunking multiple vlans between 3560's. Each switch has multiple connected networks and ospf is the routing protocol. What I would like to do is secure a vlan so you can't access that network from another vlan. For example: My server farm vlan is vlan 250, but I dont want the workstations from vlan 200 to access those servers except port 21 & port 80 traffic. I understand that I would need to do this with acl's, but im unsure where to start. Any examples would be helpfull. Thanks, Dan _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
