Fail2ban deployment to address recent Kerberos/authentication issues
On Thursday evening, January 19, 2012 SCS Computing Facilities will deploy an additional measure to combat the recent flood of SSH scans that have been negatively impacting the performance of our Kerberos authentication servers. DetailsJanuary Critical Windows and Adobe patches
On January 10, 2012, Microsoft released patches for critical vulnerabilities in Windows. In addition, Adobe released critical patches for Adobe Reader and Acrobat. Details Network Maintenance in Wean Hall, January 18th 2012
On Wednesday, January 18, 2012 SCS Computing Facilities staff will perform routing changes on the network equipment that provides network connectivity for Wean Hall. Details Recent Kerberos and Authentication Problems
Recently, there have been periods when authentication to the SCS Kerberos servers has been extremely slow, causing some applications to time out when authenticating.
Many of you will see this as an apparent issue with access to your email. Please know that the email servers are performing well and your data is safe, even if your access is intermittent due to these incidents.
We are aware that these incidents are causing critical service outages, and fixing this problem is our highest priority. We are currently in the process of implementing procedural and system-based solutions.
Please contact the SCS Help Desk at x8-4231 or send mail to help@cs.cmu.edu with any questions or concerns.
Telnet disabled because of vulnerability
December 23, 2011 - Incoming network traffic to
the default Telnet port (23) has been filtered at the SCS network border
and the Telnet service is being disabled on Facilitized Redhat,
Fedora, and Solaris hosts. Details | 
