Hi, we are looking into blocking some broadcast traffic on our wireless network here at McGill and I wanted to get some feedback to see if anyone else has done this and if so what ports you blocked and what were the consequences?
Here is a list of some ports we're thinking of blocking: - UDP 137 / Netbios - UDP 631 / CUPS - UDP 5353 / MDNS - UDP 5355 / LLMNR - UDP 17500 / Dropbox These ports take up a lot of traffic on our network and is causing our Aruba controllers to drop spanning tree and VRRP frames and then cause APs to switch back and forth between ports on our switches and between the active/standby controller. Zachary McGibbon McGill NCS / Burnside Hall Email: [email protected] Office: (514) 398-7388 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
