Updates at 4:15pm on Wednesday June 19, 2019

The departmental servers coxeter and sphere and the mail, web, share, and ptr servers will have software updates applied on Wednesday afternoon, June 19, 2019 which will require rebooting (most servers will be unavailable starting at 4:15pm).  Since some updates will be applied while the servers are still up there may be some temporary issues with some software.  We hope that any such issues will be minor and by doing most of the upgrading before bringing systems down the shorter downtime will be worth the potential minor problems.  Please restart any programs if you observe problems during the upgrades (and please let us know at requests@math.toronto.edu, so we can investigate).  We expect the systems to be back up by 5pm.

215 Huron network switch upgrade

We will be testing a replacement network switch for VoIP for 215 Huron on Wednesday June 5 from 3:30pm-4:00pm.  Users in 215 Huron may experience short wired network outages during that time.  If all goes well then on Thursday June 6 from 3-4:30pm we plan to move everyone to the new switch.

The UofT wireless network will not be affected by our switch upgrade.

Departmental VoIP Information Page

The Departmental VoIP Information Page is now available.

PGB network switch upgrades on Monday, June 3, 2019 from 11am to 1pm

In order to be ready for VoIP, we will be upgrading the network switches in PGB on Monday, June 3, 2019 from 11am to 1pm.  Network connections will be temporarily unavailable while we do the upgrades.  If all goes smoothly we expect to have just two 10-15 minute outages to complete the transition.

Updates at 4:15pm on Wednesday May 22, 2019

The departmental servers coxeter and sphere and the mail, web, share, and ptr servers will have software updates applied on Wednesday afternoon, May 22, 2019 which will require rebooting (most servers will be unavailable starting at 4:15pm).  Since some updates will be applied while the servers are still up there may be some temporary issues with some software.  We hope that any such issues will be minor and by doing most of the upgrading before bringing systems down the shorter downtime will be worth the potential minor problems.  Please restart any programs if you observe problems during the upgrades (and please let us know at requests@math.toronto.edu, so we can investigate).  We expect the systems to be back up by 5pm.

Serious Windows 7 Vulnerabilities

Microsoft has issued advisory which describes a serious Remote Desktop (RDP) vulnerability.  Attacks can occur with no passwords needed.

According to SANS:

Title: Microsoft patches 79 vulnerabilities, 22 critical
Description: Microsoft released its monthly security update today, disclosing a variety of vulnerabilities in several of its products. The latest Patch Tuesday covers 79 vulnerabilities, 22 of which are rated “critical,” 55 that are considered “important” and one “moderate.”

NOTE: Windows 7 is end of life in 7 months.  Please update to Windows 10 now.

Network switch upgrades on Wednesday, May 1 from 11am to 3pm

We will be upgrading the last four network edge switches for our main math network in Bahen on Wednesday, May 1st from 11am to 3pm.  The following offices will be affected:

BA6120 BA6191 BA6193 BA6200 BA6202 BA6204 BA6206 BA6208 BA6209
BA6211 BA6212 BA6214 BA6216 BA6218 BA6224 BA6226 BA6228 BA6230
BA6232 BA6234 BA6236 BA6242 BA6244 BA6246 BA6248 BA6250 BA6252
BA6256 BA6258 BA6260 BA6262 BA6264 BA6266 BA6268 BA6270 BA6283
BA6290 BA6290A BA6290A BA6290C BA6290G BA6290G BA6290J BA6291

The lw2 and lw3 printers will be affected by these outages, so they will be unavailable while their network connections are being upgraded.

The Computer Room (BA6200), as listed above, will also be affected.

“mutt” email client updated on coxeter

The “mutt” email client has been updated on coxeter, from version 1.5.20 to version 1.11.4. Please revise your “.muttrc” file for any changes, the man page for which can be found on coxeter at:

/usr/local/software/mutt-1.11.4/share/man/txt/muttrc.txt

The old version is still available by running “/usr/bin/mutt”.

Power outage at Bahen

At approximately 19:30 on Thursday April 4th there was an extensive power outage across campus which also affected the Bahen building. Power to Bahen returned at approximately 20:15, and efforts to restart the computer systems at the Mathematics Department commenced at 20:30. All systems were back online by 22:15.

Default resolution for Ricoh scanning is now 400dpi

Since the scanning done on the Ricoh photocopiers in BA6290A and PG104A is primarily for Crowdmark and the photocopiers had different resolution defaults we decided to make them the same.  It was suggested that 400 dpi would be good, so we have done that.  If you think that 300 dpi would be a better default please let us know.

There seems to be no way to change the default contrast setting and whether one wishes to have the scanning set to one- or two-sided on these photocopiers.