On Tuesday, March 19, 2013 at 10:00 am, UNL will begin requiring the use of
the Virtual Private Network (VPN) for the Telnet (port 23) and SNMP (port
161) protocols. Computer users trying to access office computers or servers
from off-campus after that time will need to do so using the UNL VPN.
Telnet and SNMP access to machines within the campus network will not be
Computers with open Telnet and SNMP ports have been subject to brute force
attacks on a consistent basis over the past several weeks. UNL intrusion
detection tools have recorded tens of thousands of exploit attempts an hour
during peak attack periods.
The VPN will encrypt the UNL data transmitted through an off-campus
connection back to campus and provides another layer of security to protect
you and your data.
By requiring the use of the VPN to remotely access UNL resources, those
hackers who continually attack will no longer be able to openly see and
attempt to log in to our computers that have those ports enabled. This will
reduce our attack surface, and provide a tighter level of security around
our computing resources.
For more information on the VPN and how to connect, go to http://is.unl.edu/vpn.
If you have any questions please contact the IS Security Team at 472-5700.
Director, IT Security,
University of Nebraska-Lincoln
126 501 Bldg
Lincoln, NE 68588-0203