Subject: Klez, New NAS Training, CITES Status, Network Maintenance
Contents:
1) Klez Virus
2) OpCenter Phone Numbers
3) New NAS Training Offered
4) CITES Status Page
5) UIUCnet Maintenance Times
6) Environmental Monitoring
7) DCL Power Outage
8) Tech Tips
2002 Klez Continues to Spread
The Klez virus has been filtered at the student/staff cluster. Although this should stop incoming Klez traffic to the cluster, those not getting their email from the cluster will not be protected by this measure. We continue to see incidents from internal hosts propagating the virus.
For complete information on the filters in place, see http://status.cso.uiuc.edu/
The latest versions of Klez have infected more than 7% of PCs around the world, moving past totals accrued by SirCam and Nimda. Variants of the Klez virus continue to spread with such rapidity that some suspect the virus's spread is hastened with the use of "seeding," though there is no evidence to support this. Klez uses a variety of subject lines and can spoof senders' e-mail addresses, making it harder for people to look out for the usual signs of virus-laden e-mails. Klez uses its own SMTP server to mail itself out to e-mail addresses found on infected computers' hard drives. Corporate users are less likely to become infected because they are more vigilant than home users about updating their anti-virus signatures.
(The SANS Weekly Security News Overview Volume 4, Number 18 May 1, 2002)
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2. OpCenter Reduces Number of Phone Numbers
The OpCenter phone number 333-7685(the DataCenter's old phone number) is no longer in use. Our primary number is 244-1000 and is not changing.
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3. Upcoming NAS Training Offered
Net101 continues to be a popular class. We intend to conduct one of these each semester. You can view the slides from the last class at:
http://opcenter.cso.uiuc.edu/nas/net101.htm
A Video Conferencing Class with hands on demonstrations and practice will be offered on July 10th, in room 2240 DCL from 2 pm to 4 pm. Stan Henson from CITES will be conducting the session. We are currently working on a Net210 class that will be all about the tools that are available for network administrators. The class will encompass both tools that we have here at CITES for use, as well as some commercial/shareware products that are useful for network analysis and troubleshooting.
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CITES maintains a status page that is managed 24 hours a day, 7 days a week by the OpCenter. The status server provides timely information to users of CITES services, including updates about outages and problems, regularly scheduled maintenance, and service announcements. You can subscribe to have the status page emailed to you along with updates.
In addition, there is a new 1:01 PM 6/18/2002feature called CITES-RAW-STATUS-L that allows one to get changes to event texts as they happen. You can access and subscribe to CITES-RAW-STATUS-L or CITES-DAILY-STATUS-L at: Subscribe/Unsubscribe link at http://status.cso.uiuc.edu/CITES-RAW-STATUS is an ongoing project and we expect version updates shortly.
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Major network upgrades will be underway beginning the last week of June. They are scheduled to occur during the regular maintenance times as posted on the CITES status page http://status.uiuc.edu/ Major network disruptions/outages should be anticipated during the posted times.
<From the Status Page>
The following times are reserved for changes and tests to the CCSO portions of UIUCnet, including the campus backbone network and campus Internet connections. Service may be interrupted during these times:
Monday - Friday 5:30 AM - 07:30 AM
Saturday 5:30 AM - 10:00 AM
Sunday 5:30 AM - 12:00 Noon
Major non-emergency tests/changes, which result in long outages during the maintenance time-window will be announced on the previous working day.Minor test/changes, with small outages less than 10 minutes in duration, that occur in the maintenance time-window, may not be announced. Emergency and time-critical changes may be made outside of the normal maintenance time-window. Off-campus providers (such as the campus's Internet providers) may have different maintenance schedules.
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High temperatures can cause equipment to malfunction or fail. With the summer temperatures here in Champaign-Urbana, it is important to keep a close eye on the environmental monitors that may be in network closets. If you have questions regarding monitoring,please email admin-help@uiuc.edu
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Many of you have already heard through E-Week or another email that there is going to be a power outage in the CITES DataCenter due to a major infrastructure upgrade. We are continuing to update the list of affected services, and the most up to date information can be found on our status page at http://status.uiuc.edu under scheduled events.
Below is a portion of the E-Week mailing that was sent to the entire campus.
On Saturday, June 22 from 12:01 a.m. until 8:30 a.m., many CITES services will be unavailable due to a scheduled power outage required in order to improve CITES Data Center utility infrastructure. Staff & Student Cluster Email, Epaging, and other additional services will be unavilable during this time. If you have any questions regarding this outage, please call the OpCenter at 244-1000.* * *
Crontab is powerful Unix utility that schedules tasks. You can view it by using crontab -l (to list the contents of the crontab), crontab -e (to edit your crontab file), and crontab -d (to delete). A sample line from a crontab file is below, Notice that the format is the five time fields followed by a command that you want to run.
00 8 1 * * echo "Reminder to self - mount backups tape" | Mail -s "backup reminder" me@uiuc.edu
The five fields at the beginning of the line are documented here:
MINUTE(0-59) HOUR(0-23) DAYOFMONTH(1-31) MONTHOFYEAR(1-12) DAYOFWEEK(0-6) Note 0 = SunSo, in our example, we are going to send ourselves an email reminder to mount the backups tape. The command is going to run every 1st of the month at 0800 hrs. The * represent any value, and all values in the 5 time fields must match for the command to be run.
To set up your own crontab, type crontab -e from the command line and just start to add lines for each command.* * *
CITES Network Administrator Support (NAS) http://www-commeng.cso.uiuc.edu/nas/
NetNugget Archive http://www-commeng.cso.uiuc.edu/nas/netnuggets/index.html
Feedback, questions, comments, help - admin-help@uiuc.edu