232f518b293a4600b06965d66990a025.ppt
- Количество слайдов: 42
Hosted by The 2003 Report Card The state of our OSes Some good news, some bad news, and some challenges for the near future
Hosted by The Good News no bugs in Server 2003
Hosted by Server 2003’s Here ready to upgrade? l Probably not, unfortunately l It’s not that 2003’s not a really neat tool – it is – it’s probably the cost l See if this looks familiar:
Logical outcome: people upgrade more slowly! Hosted by
Hosted by Evidence l NT 4. 0 is a seven year old OS l But people are still using it; in fact, many controller devices are only available in an NT 4. 0 version l Imagine running NT 3. 1 in 2000 l Consider version skipping; how many go • SQL 6. 5 -7. 0 -2003? • Windows 98 -NT 4 -2000 -XP? • How many still use Exchange 5. 5?
Hosted by Is something wrong? l No, it’s a natural side effect of any technology maturing l That’s a significant point l Note that this is not advice… it’s observation l Some simply cannot afford to upgrade without a life-and-death reason … that’s important l But it also means that “being an expert” gets tougher – you must know a wider range of OSes
Hosted by What does this mean? l Our jobs will become – have become – different l Less planning l More maintenance l Broader responsibility l So focus on whatever makes maintenance easier!
Hosted by Other Effects: Older Bugs? l MS does a good job finding bugs during the beta phase l But there a lot that will never get found until the system’s being “beaten” on l I see that in my current AD questions, appearing in the year 2003 … not 2000 l So how long will it take before we truly trust any new software?
Hosted by Should I Upgrade to 2003? l Active Directory 1. 1 the good news l Forest trusts l Domain renames l Branch office goodies l Tons more group policies l Web-based admin tools l Better XP integration l IIS 6 l Vastly, vastly improved group policy management tools l Better, easier security l All the XP lagniappe l More command line tools l E-mail server, database server built in
Hosted by Should I Upgrade to 2003? more good news l 2003 really doesn’t need more powerful hardware than 2000 Server in my experience, although more is still better l Upgrades seem smooth l 2003 runs fewer services out of the box by default – they’re there, you just have to explicitly turn them on rather than them being on automatically
Hosted by Should I Upgrade? the bad news l The usual: costs money and time l You MIGHT have to shell out for Enterpri$e, unfortunately l CALs l Product activation l No MSI packager shipped with 2003 l Answer: www. ondemandsoftware. com/freele 2003
Hosted by Should Upgrade? more bad news l Exchange 2000 doesn’t run on 2003 DCs w/o a LOT of work (KB 325379)
Hosted by Bad News: NT 4 Abandoned? l KB 331953 reveals a potential denial of service hole in the RPC port mapper, which uses port 135 l Another “buffer overflow” problem l Basically it’s a bug that enables data entered into ONE program to leak out of that program and overwrite another one l Or, graphically…
Hosted by Data input area of application Buffer overflow Rest of application
Hosted by Severity l Does not allow an attacker to steal data from a system l Affects NT 4, 2000 and XP l 2000 and XP patched l NT 4 ISN’T… no patches for it
Hosted by “Architecturally Impossible? ” l MS patched 2000 and XP, but not NT 4 l Their reason: that it’s “architecturally impossible. ” l This seems odd, as RPCs didn’t really CHANGE all that much from NT 4 to 2000… but there’s a 2000 fix l So with all respect, this seems suspect and, well, awfully convenient for MSFT shareholders l Which leads to the delicate “trust” issue
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Hosted by Why this isn’t acceptable l NT 4 has quite a bit of expected lifetime left l Unless they’re willing to buy the old copies back or offer free 2000 upgrades… l Merely saying “don’t put a system with port 135 on the Internet” is a workaround, not an answer – despite “expert” opinion, there’s nothing wrong with it, given patches, passwords and permissions l It supports what was basically NT’s main reason for existence for years… file serving
Hosted by Possible Microsoft Options l Release a patch l Explain that the patch is impossible, and release source code to prove it l Develop a more complex patch and charge for it l Adopt the Pentium approach… offer free upgrades l Never have exposed the vulnerability in the first place if they knew they couldn’t fix it
Hosted by When Is an OS Obsolete? l I think users determine that, not companies l Not everyone needs the latest thing, or needs it ENOUGH l Not everyone can afford the latest thing l Hardware does not obsolete OSes anymore l Seven year old software is not unusual at all in other markets
Hosted by Challenge: Security
Hosted by Challenge: Security l Not news, but it keeps getting worse l Good news: newer OSes really ARE more secure (XP, 2003), lower CERT high level advisories l But the bad guys get better… l Advice: • Beware the “boogah-boogah” effect • Try things out for yourself • Stay on top of patches (Su. S, SMS) • Assume your firewall is doing very little (RFC 3093)
Hosted by An Easy Security Consideration a bit of homework l NTLMV 2 and Kerberos are both pretty secure l But 99% of the existing systems still support LM and NTLM l There’s really not a reason for it any more l Get rid of them: • stop creating LM hashes and change passwords • stop accepting LM and perhaps NTLM
Hosted by Good News: GPMC l MS’s message in 2000 and later: GPs are the way to manage a network l But they don’t always work the way you expect l The trouble is the lack of management tools l Answer: Group Policy Management Console
Hosted by What GPMC does l Backs up and restores GPOs l Diagnoses replication errors on GPOs l Shows what a GPO does, simplified l Shows what the total effect of your GPOs is, again simplified l Tells you which GPO performed each action
Hosted by GPMC Opening Screen
Hosted by GPO Manipulation in GPMC
Hosted by GPO Diagnostics (1)
Hosted by RSOP Wizard Invocation
Hosted by RSOP Overview
Hosted by RSOP Winners/Losers
Hosted by Bad News l Only runs on 2003 or XP systems l Will not install on a 2000 box l Requires. NET Framework on XP or 2003 box l Can’t even run it remotely on a 2000 member server or domain controller l BUT you can back up / restore to/from a 2000 box, or view the results of policies gotten from a 2000 box by a 2003 or XP box
Hosted by Challenge: Death to Net. BIOS l AD was supposed to put an end to the broadcasts, WINS, strange name resolution problems, etc. l But it hasn’t l Challenge to Redmond: announce a date for Net. BIOS’s “deathday”
Hosted by Challenges: We Still Can’t… a partial list l Hide files that users can’t access l Restrict simultaneous logins l Kick a user off the whole network with one click
Hosted by The Biggest Problem Remaining l The fact that the IT staff shortage will NOT, for some strange reason, return l SOMETHING’s got to be done about this l My suggestion to Microsoft: a new OS
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Hosted by l Networking: Windows PX Features • l Online Help: • In response to customer desires for faster systems, we have trimmed all nonessential files to reduce PX’s footprint. So sorry, no Help files. Call your help desk. Refer to Web and other servers solely by their IP addresses for greater reliability. Static IP-only support ensures that your network offers no surprises – and no complex DHCP! l Driver Support: • All the drivers you can write. PX ships with an assembler and full examples to write your own. Hire some programmers. Smart ones. Our Simple. TCP™ network system speeds up networking by cutting out name resolution – no WINS, no DNS. l User Interface…
Hosted by PX User Interface C: > Follow the arrow forward to Windows PX!
Hosted by Sample PX Commands l See a folder on the first hard drive’s directory with the edit (Examine Disk In. Teractively) command: l edit #1 A: *. * l Format a disk with Edit (Erase Disk In. Teractively command: l Edit #1 A: *. * l Note all commands are case-sensitive!
Hosted by What the analysts are saying l “Windows PX’s 27 -test certification program will mean better-qualified professionals” --Sylvan Prometric, VUE testing centers l “We estimate that desktop support costs will rise by 329. 1433% under PX, with a 92. 1182376% confidence interval. This will inevitably lead to an IT staffing shortage” --- Gartner Group
Hosted by Thanks! l My sincere thanks for attending l Free tech newsletter: www. minasi. com l Seminars and audio CDs there too l email: help@minasi. com l HAVE A GREAT CONFERENCE!!!
Hosted by l Don’t forget Red. Hat Enterprise Linux ES Standard Edition $599 -799 l http: //www. redhat. com/software/rhel/ es/
232f518b293a4600b06965d66990a025.ppt