Just a few "corrections": It sounds like OP want's to secure VLAN 250, so the direction should either be outbound on VLAN 250 or inbound on VLAN 200 (and any other client VLANs).
The logging might not be a terrific idea, since a lot of traffic could lead to a DoS situation. You can look at ACL counters to see hits. AFAIK they are updated also for hardware CEF-switched traffic on a 3560. Configuring InterVLAN routing with Catalyst 3560 switches: http://www.cisco.com/en/US/tech/tk389/tk815/technologies_configuration_example09186a008015f17a.shtml http://tinyurl.com/6hu9c Configuring network security with ACLs: http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_25_se/configuration/guide/swacl.html http://tinyurl.com/3agutf Regards, Peter On Sat, 2008-03-01 at 20:11 +0900, Aaron R wrote: > 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/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
