For the ports listed below, which have been determined to be unsafe for direct communication, communication is blocked between the external network and between campus subnets.

Ports Blocked for Communication Between Subnets

Port
TCP/UDP 135
TCP/UDP 137
TCP/UDP 138
TCP/UDP 139
TCP/UDP 445
TCP/UDP 593

Ports Blocked for Communication with the External Network

PortService
TCP/UDP 7ECHO
TCP/UDP 9DISCARD
TCP/UDP 13DAYTIME
TCP/UDP 17QOTD
TCP/UDP 19CHARGEN
TCP/UDP 23TELNET
UDP 69TFTP
TCP/UDP 111SUN RPC
UDP 135MS EPMAP
UDP 137NB Name
UDP 138NB Datagram
TCP 139NB Session
UDP 389LDAP UDP temporarily blocked
TCP 445SMB
TCP 515LPD
TCP/UDP 593HTTP RPC EP MAP
TCP/UDP 1433MS SQL Server
TCP/UDP 1434MS SQL Monitor
TCP/UDP 1755MMS
UDP 1900SSDP
TCP/UDP 2049NFS
TCP 2323Mirai temporarily blocked
TCP/UDP 9100LPR
UDP 11211Memcached temporarily blocked
TCP 52869Mirai temporarily blocked
UDP 53413Netis/Netcore Router temporarily blocked