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Seit einigen Tagen bin ich stolzer Besitzer des aktuellen ATI Flagschiffs Radeon HD 4870 mit 1GB RAM. Natürlich darf ein Benchmark hier nicht fehlen. Meine restliche Hardware wurde nicht verändert (siehe unten) .

Das aktuelle Ergebnis lautet: 8806 Punkte.

Update: 3D Vantage Ergebnis: 5842 Punkte.

Eine Leistungssteigerung von ca. 55%

Nicht übel, was?

Meine nächste Investition wird aller Wahrscheinlichkeit nach ein 24″ TFT Bildschirm. Allerdings erst im neuen Jahr.

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Mein System:

• AMD Athlon 64 X2 4400+
• NVIDIA GeForce 7900 GT
• 2048 MB
• GA-K8N-SLi

Mögliche Windows-Updates der jüngsten Zeit haben wieder einmal für einwenig Verwirrung unter den Instant-Messaging Anwendern verursacht. Nach Installation einiger Aktualisierungen für das Betriebssystem Windows Vista war das Einloggen beim Live Messenger nicht mehr möglich.

Stundenlanges herumprobieren, aufmerksames Lesen dutzender Beiträge in entsprechenden Internetforen etc., brachten kein Erfolg, bis jemand auf die kluge Idee gekommen ist, sich doch einfach mal den MTU-Wert (Maximum Transfer Unit) näher anzuschauen. Dieser legt dabei die höchste Zahl an Bytes fest, die ein Datenpaket im Netzwerk betragen darf. Verglichen mit einem Lastwagen zeigt der MTU-Wert das höchste zulässige Gesamtgewicht des Fahrzeugs auf. Kommt das Paket darüber, darf es bestimmte Routen nicht mehr benutzen.

Mit dieser Idee wird also zunächst mit Hilfe des Kommandos “ping” der optimale MTU-Wert ermittelt.

• ping www.heise.de -f -l 1464

Der Parameter -f verbietet dabei dem Empfänger, das Paket zu zerlegen, während -l die Größe des Paketes festlegt - diese ist in dem Beispiel auf 1464 Bytes gesetzt.

Den Wert so lange schrittweise verkleinern, bis die Eingabeaufforderung den Hinweis “Paket müsste fragmentiert werden” nicht mehr anzeigt. Zu dem eingegebenen Wert werden anschliessend 28 Bytes (IP-Header) addiert. Das Resultat ist der optimale MTU-Wert. Dieser wird in der entsprechenden Admin-Oberfläche des Routers eingegeben.

Nach einem Trennen und Verbinden der Internetleitung sollte der Windows Live Messenger wieder ordnungsgemäß funktionieren.

Falls kein Router verwendet wird, sollte der Registrierungseditor zum Einsatz kommen. Achtung! Vorher ein Backup der Registry ziehen!

• HKEY_LOCAL_MACHINE \ SYSTEM\CurrentControlSet \ Services \ Tcpip \ Parameters \ Interfaces

An der Technischen Universität in Darmstadt ist es einigen Studenten gelungen, den bereits zum Knacken der WEP-Verschlüsselung (Wikipedia) bekannten Algorithmus zu optimieren.

Wurden für das Knacken eines 128Bit Schlüssels in der Vergangenheit noch ca. 2 Millionen abgefangene Pakete benötigt, so reichen laut der neuen Variante nur noch 40.000 Pakete aus, um eine 50 prozentige Wahrscheinlichkeit beim Errechnen des Schüssels zu erzielen. Mit einem Pentium-D 1,7Ghz ist es so möglich, innerhalb einer Minute den Schlüssel zu knacken.
Artikel fortsetzen.

Eine kleine Warnung an dieser Stelle für World of Warcraft Spieler, die den aktuellen Patch von Microsoft bezüglich des Bugs in animierten Mouse-Cursors noch nicht installiert haben:

Cracker haben Webseiten online gestellt, die diese Sicherheitslücke ausnutzen, um so an wertvolle Accounts von Spielern heranzukommen. Ich empfehle dringend das Aufspielen des Patches. Allerdings solltet Ihr zuvor den entsprechenden Knowledge-Base Eintrag von Microsoft lesen, denn der Patch kann in Zusammenhang mit Realtek Soundchips Komplikationen hervorrufen.

Update: Da einige Male die Frage aufkam, ob denn von solchen Webseiten oder E-Mails etwas heruntergeladen werden muss, um diese Sicherheitslücke erst nutzbar zu machen: Nein! Das einfache Betrachten einer präparierten Seite oder das Durchlesen einer solchen E-Mail reicht aus!

- Download des Patches
- Knowledge Base Artikel

- Quelle: BBC News