KCLUG September 2004

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63 participants
117 discussions

In the UK windows will now control thermo-nuclear ICBM's
by jeffslists 24 Sep '04

24 Sep '04

This sure is scary. I didn't think the Brits were that stupid. OSS torpedoed: Royal Navy will run on Windows for Warships http://www.theregister.co.uk/2004/09/06/ams_goes_windows_for_warships/

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routing / firewall question
by hanasaki 24 Sep '04

24 Sep '04

the network is Internet <=> firewall Linux with two NICs firewall <=> internal network The internal network has hosts with the following: hostA - one NIC smtp hostB - one NIC http/https hostC - one NIC dhcp server hostD - one NIC squid http proxy : port 8080 privoxity http proxy filter : port 8081 privocity forwards to squid squid sends to the outside world should the order be swapped? why? why not? The dhcp server tells clients to route via hostD how can hostD be setup so that it is a transparent proxy? Currently all clients set their http proxy to hostD on the privocity port. I know some IPtables rules will be needed on hostD but dont know what to set. Will routing rules need to be set on hostD? what are they? thanks

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Shorewall Firewall droping ftp from 2 PCs
by Michael Pratt 24 Sep '04

24 Sep '04

This is weird, I have about 12 PC's Going through my Mandrake 10 using Shorewall. Two of those PC's cannot download anything via FTP. but can surf the web and download via http. Shorewall:newnotsyn:DROP:IN=eth1 OUT= MAC=00:0c:f1:ea:f2:32:00:60:49:02:0a:6d:08:00 SRC=161.114.22.105 DST=xxx.xxx.xxx.xxx LEN=40 TOS=0x10 PREC=0x00 TTL=51 ID=20764 DF PROTO=TCP SPT=21 DPT=2984 WINDOW=32768 RES=0x00 ACK FIN URGP=0 Shorewall:net2fw:DROP:IN=eth1 OUT= MAC=00:0c:f1:ea:f2:32:00:60:49:02:0a:6d:08:00 SRC=192.6.165.119 DST=XXX.XXX.XXX.XXX LEN=48 TOS=0x08 PREC=0x00 TTL=49 ID=26898 DF PROTO=TCP SPT=20 DPT=1459 WINDOW=32768 RES=0x00 SYN URGP=0 There is nothing in my firewall that is set up to block any of these PCs at all. Any ideas of what to check? Mike -- Michael Pratt Nova Blue Inc. http://www.nbmap.com

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RE: Systems Administrator Position
by Garrett Goebel 24 Sep '04

24 Sep '04

Timothy A. Canon wrote: > > I hope this is not inappropriate -- Not inappropriate at all. Sounds like a position many people on this list would be qualified for. > Community Resource Network (CRN) is looking for a Systems > Administrator. CRN is a nonprofit Internet Service Provider and > Application Service Provider that provides technology services to > the Kansas City nonprofit community. We are looking for an > experienced individual who will (among other things) administrate > our Unix and Windows servers, execute our backup procedures, and > manage our email infrastructure. > > We will be concluding the interview process next week. Read more > about the position and submit your resume here: > > <http://www.careerbuilder.com/share/det.asp?d=JN1GT64684FM04VHY5> > > Regards, > > Timothy A. Canon Community Resource Network > Web Administrator 106 West 11th St, Suite 110 > 816.960.0708 x119 Kansas City, MO 64105-1806 > webmaster(a)crn.org http://www.crn.org/ -- Garrett Goebel IS Development Specialist ScriptPro Direct: 913.403.5261 5828 Reeds Road Main: 913.384.1008 Mission, KS 66202 Fax: 913.384.2180 www.scriptpro.com garrett at scriptpro dot com

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Re: Anyone seen the new Sun FileSystem
by Brian Kelsay 24 Sep '04

24 Sep '04

I stand by my original goofy take on the pie in the sky filesystem. Maybe it works as stated, maybe not, but you cannot say that all these functions come at no cost. Zero administration, disk pooling (RAID) and checksumming sounds great, but the hardware is still performing the calculations which come at a cost. You may not notice the cost in CPU time or ram initially, but as you accumulate data any filesystem requires more resources. The FAT or index of files grows. This may need to be held in ram like other database tables and indexes are for speed of access. Sun is banking on customers running this on Opteron or other 64-bit processors with large amounts of ram and fast i/o disks. Sure they may be able to do those things as advertised, but to me it sounds like any other product that is the last word in widgets. Don't bank on something like this running on older hardware such as a 1 GHz or even a single processor. See above. Is it really reasonable to assume that this filesystem is suitable for servers, SANs and desktops alike? By the way, they did state in the article that we might someday outgrow this filesystems limits. That is only reasonable. Just look at the explosion of filetrading movies due to P2P and Broadband. Now it is reasonable to have a 160GB or 200GB disk in a new PC. Brian Kelsay >>> Oren Beck <oren_beck(a)hotmail.com> 09/22/04 11:09AM >>> > >>-----Original Message----- >>From: Oren Beck [ >> >>hanasaki wrote: >> >>>http://www.sun.com/2004-0914/feature/ >>> >>>Any thoughts?

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Systems Administrator Position
by Timothy A. Canon 24 Sep '04

24 Sep '04

I hope this is not inappropriate -- Community Resource Network (CRN) is looking for a Systems Administrator. CRN is a nonprofit Internet Service Provider and Application Service Provider that provides technology services to the Kansas City nonprofit community. We are looking for an experienced individual who will (among other things) administrate our Unix and Windows servers, execute our backup procedures, and manage our email infrastructure. We will be concluding the interview process next week. Read more about the position and submit your resume here: <http://www.careerbuilder.com/share/det.asp?d=JN1GT64684FM04VHY5> Regards, Timothy A. Canon Community Resource Network Web Administrator 106 West 11th St, Suite 110 816.960.0708 x119 Kansas City, MO 64105-1806 webmaster(a)crn.org http://www.crn.org/

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RE: In the UK windows will now control thermo-nuclear ICBM's
by Brian Densmore 24 Sep '04

24 Sep '04

> -----Original Message----- > From: Jonathan Hutchins > > > On Wednesday 22 September 2004 01:11 pm, jeffslists wrote: > > > This sure is scary. I didn't think the Brits were that stupid. > > > OSS torpedoed: Royal Navy will run on Windows for Warships > > > http://www.theregister.co.uk/2004/09/06/ams_goes_windows_for_warships/ > > We have Windows running Nuclear Power Plants (remember the > Big Blackout?) and > nuclear weapons. Why should the Brit's fall behind? No we don't. Windows may be utilized ***in*** nuclear power plants, but the actual control of the plants is by highly specialized software and hardware, and there's no way you're going to convince me that tactical weapons are using windows. I used to do MILSPEC electronics and I've never seen anything that even hinted of DOS never the less Windows being used. Besides Windows would never have the response time necessary to do the course corrections needed for tactical weapons. I will say that this article is very scary indeed, but not knowing what the UKs CMS controls it is hard to say what the risks are. I find highly improbable that Windows is being used for targeting, tracking or control mechanisms in these warships. But if it is, they have serious trouble ahead for them. But then these are the same people that forgot to thaw their chicken before shooting them at train windows. £0.02, Brian

3 2

Linux Support position
by hanasaki 24 Sep '04

24 Sep '04

6mo+ position below. Send your resume in ms-word and/or text if you are interested and qualify. hanasaki(a)hanaden.com =========== *Title: Site Monitoring Team – System Administrator *Start date: ASAP *Duration: Mid to late December (best info available at this time) Number of Positions: 1 Years of experience: midlevel to advanced (3+ years) *Required Skills: Linux is preferred skill – revert to Solaris if no Linux (see notes at bottom) *Desired Skills: Will support the site within the site monitoring group. *Project Description: Will support the site within the site monitoring group. This group is responsible for keeping the current website up and running until the new one is implemented and proven. Roughly estimated at middle December at this point. *Job Description: Must be comfortable with command level skills! Willing to work shift hours – this is 24x7 shop. They rotate shifts (8- 5pm, 5pm-midnight, midnight to 8am) with off-hours work done from home. Strong trouble shooting skills. Good at production support.

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Re: streaming media question
by Brian Kelsay 23 Sep '04

23 Sep '04

>From what I've read of Icecast, you can set the number of allowed connections. You can also set the bitrate of the file to lower the cost in bandwidth. If you wanted to keep someone from listening to it again, then you might do some things w/ a cookie. Better idea is to just let them download the file and listen multiple times if that is legal with the file you post. You don't really need a T-1 to serve it up unless you want 20-30+ users simultaneously. But I could be wrong. www.icecast.org http://www.icecast.org/docs.php Shoutcast also runs on Linux and can be similarly configured. www.shoutcast.com http://www.shoutcast.com/download/serve.phtml http://www.shoutcast.com/download/broadcast.phtml Brian Kelsay >>> "Brian Densmore" <DensmoreB(a)ctbsonline.com> 09/23/04 02:06PM >>> Got a question. I want to implement a media player on my website. A 30 second audio. I have access to a T1 to serve it up, but I of course have bandwidth limitations for my box and need to be able to throttle the bandwidth used by the media link and also I want to track concurrent users and be able to throttle accordingly per user, or to reject users because throttling X number of users would make it useless. So any one know ways of doing this?

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streaming media question
by Brian Densmore 23 Sep '04

23 Sep '04

Got a question. I want to implement a media player on my website. A 30 second audio. I have access to a T1 to serve it up, but I of course have bandwidth limitations for my box and need to be able to throttle the bandwidth used by the media link and also I want to track concurrent users and be able to throttle accordingly per user, or to reject users because throttling X number of users would make it useless. So any one know ways of doing this? Thanks, Brian

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KCLUG September 2004