Thanks for the note.:) You are right, at.exe doesn't allow cmd.exe to run in interactive mode in Vista.
I tried using schtasks.exe as follows:
C:\> schtasks/CREATE/IT/TN TaskName/SC ONCE/TR C:\Windows\System32\cmd.exe/ST 12:34
SUCCESS: The scheduled task "test" has successfully been created.
Somehow, it worked. I got an interactive Command Prompt but it is not running as System-Level. This is the same as running the "Command Prompt" shortcut, then right-click, choose "Runs as administrator".:(
With the ability to boot up a LiveCD, wouldn't retrieving the NTLM password hashes and cracking the passwords with rainbow tables a better idea? The process can be done with Ophcrack within minutes on a modern PC. That way, the attack gains access to the local Administrator account but leaves no traces behind (i.e. no modification of system files).
The Administrator account would then allow the attacker to login into Vista and launch cmd.exe at System-Level. This can be accomplished by using the Task Scheduler at.exe to run cmd.exe at the next minute.
WRT54G hardware versions 1 to 4 are more "hackable" than the rest because of the larger NVRAM. But note that version 7 is not supported. Refer here for the details.
By the way, DD-WRT v.24 was just released on 24 May 2008. Check it out!
Changing the IP Filter Settings really helps. However, there are other things to take note:
1. Setting the correct upstream and downstream limits. I couldn't stress the importance of these two settings. The success of QoS largely depends on the two limits.
2. Packet scheduling algorithm. Somehow, HFSC doesn't work out well... but HTB does.
3. Protocol Encryption. If the clients are using PE, then there might be a problem with letting DD-WRT distinguish P2P traffic from the rest.
I'm not sure if you have tried this but on my Pentium 3 700MHz laptop with 384MB of RAM, I could hardly play emulated games using MAME or ZSNES. I've tried doing so in Windows XP as well as a stripped down Ubuntu system.
If you're using omni-directional antennas, the most serious issue is that the multiple hops interfere with each other. deally, you'd have multi-radio nodes that use different frequencies, and a routing protocol that attempts to maximise path diversity, but the multiple radios increase total cost, and building a routing protocol that takes diversity into account is not completely trivial.
Exactly. Unfortunately the simple WRT54G setup is unable work with multiple directional antennas.
Interestingly, I was advised to disable one of the two omni-directional antennas (and disable diversity) to improve the overall connectivity of the mesh. I didn't try it with two antennas to investigate any the diffences though. Would this really help?
I experimented with 5 units of WRT54G wireless routers running Freifunk firmware and I tried saturating the link with several G.729 VoIP calls. The system doesn't scale well. Over 3 hops, the number of calls greatly reduces as there is just too much random delay. In order for voice communication to be worthwhile, the latency cannot be more than 200ms although there are good forward error correction schemes and huge buffers.
Latency is a real problem especially when you are doing it over several hops. The "lag" isn't consistent. It will hit you at random interval, and that can be extremely irritating. This may be due to the use of CSMA/CA and RTS/CTS (depending on configuration). I haven't found a way to improve it though...
I'm not karma-whoring but since I had just checked it out, so to whoever is curious, BASIC stands for Beginner's All-purpose Symbolic Instruction Code.
A direct link to a Quicktime movie on the headline and the host server didn't get slashdotted? I wonder if they applied the same genetic modification to the server?
Simple. The servers are powered by a beowulf cluster of mighty mouse.
Now I just have to worry about unpatched holes in Windows Media Player!
If you're worried about WMP, you may wish to give Media Player Classic a try. It can be found in the Real Alternative / Quicktime Alternative installation package.
Wikipedia explains GMR but if you are keen to know about the effects of GMR on storage devices, you can refer to an article by IBM Research. There's even an animation on MR and GMR in action in storage devices.
Moore's Law describes an important trend in the history of computer hardware: that the number of transistors that can be inexpensively placed on an integrated circuit is increasing exponentially, doubling approximately every two years.
It has to do with the number of transistors and not the operating frequency.
I've never heard of mod_rewrite so I did a quick search and found this:
This module uses a rule-based rewriting engine (based on a regular-expression parser) to rewrite requested URLs on the fly. It supports an unlimited number of rules and an unlimited number of attached rule conditions for each rule to provide a really flexible and powerful URL manipulation mechanism. The URL manipulations can depend on various tests, for instance server variables, environment variables, HTTP headers, time stamps and even external database lookups in various formats can be used to achieve a really granular URL matching.
On the same processor (even under VMware!) Windows XP is smooth and the UI responsive.
I share the same sentiments. The latency is more defined when the CPU is slow. On my P3-700MHz, I could feel the difference between Windows XP and Linux running IceWM.
Could this be due to the default processor scheduling setting for Windows XP / Vista? It can be found at:
System Properties -> Advanced tab -> Performance button -> Advanced tab -> Adjust for best performance of:
(*) Programs ( ) Background services.
Summary: it's hard. Why it hasn't been done in Windows, I'm not sure. (Possibly because they don't have chroot?!).
Windows 64-bit edition uses WOW64 to run 32-bit apps:
The WOW64 subsystem is a lightweight translation layer that has similar interfaces on all 64-bit versions of Windows. Its primary purpose is to create a 32-bit environment that provides the interfaces required to allow 32-bit Windows apps to run unmodified in the 64-bit system. Technically, WOW64 is implemented using three dynamic-link libraries (DLLs): Wow64.dll, which is the core interface to the NT kernel that translates between 32-bit and 64-bit calls, including pointer and stack manipulations; Wow64win.dll, which provides the appropriate entry points for 32-bit apps; and Wow64cpu.dll, which takes care of switching the processor from 32-bit to 64-bit mode.
I'm not sure if this works the same way as chrooting to a "32-bit world" but it does work.:-)
I have a Canon i550 printer. One day the printer prompted me to change catridges as the ink has ran out. I ignored the warning and continued to print. I did it several times over different occassions because I believed the catridge was not completely empty. Then one day when I printed some stuff, the ink head moved but nothing was printed. I thought it had really ran out of ink so I bought another original ink catridge.
To my horror, nothing was printed, even though the printer driver reported a full ink catridge. I did several rounds of ink head cleaning but it still couldn't print.
I sent it to Canon for repair. The checked and told me my ink head was DAMAGED. I asked how the hell could the ink head got damaged when I used original Canon catridges? They eventually found out that I had forced forcefully used a depleted catridge on my printer, and they attributed that to be the cause of the damage.
In the end, I paid for a new inkhead, which cost more than 3 packs of new catridges. If only I had changed the catridges earlier!
Maximum PC did double-blind testing with ten listeners in order to determine whether or not normal people could discern the quality difference between the new 256kbps iTunes Plus files and the old, DRM-laden 128kbps tracks.
Slashdot Mirror
I tried using schtasks.exe as follows:
Somehow, it worked. I got an interactive Command Prompt but it is not running as System-Level. This is the same as running the "Command Prompt" shortcut, then right-click, choose "Runs as administrator".
Any clues?
With the ability to boot up a LiveCD, wouldn't retrieving the NTLM password hashes and cracking the passwords with rainbow tables a better idea? The process can be done with Ophcrack within minutes on a modern PC. That way, the attack gains access to the local Administrator account but leaves no traces behind (i.e. no modification of system files).
The Administrator account would then allow the attacker to login into Vista and launch cmd.exe at System-Level. This can be accomplished by using the Task Scheduler at.exe to run cmd.exe at the next minute.
WRT54G hardware versions 1 to 4 are more "hackable" than the rest because of the larger NVRAM. But note that version 7 is not supported. Refer here for the details.
By the way, DD-WRT v.24 was just released on 24 May 2008. Check it out!
Changing the IP Filter Settings really helps. However, there are other things to take note:
1. Setting the correct upstream and downstream limits. I couldn't stress the importance of these two settings. The success of QoS largely depends on the two limits.
2. Packet scheduling algorithm. Somehow, HFSC doesn't work out well... but HTB does.
3. Protocol Encryption. If the clients are using PE, then there might be a problem with letting DD-WRT distinguish P2P traffic from the rest.
I'm not sure if you have tried this but on my Pentium 3 700MHz laptop with 384MB of RAM, I could hardly play emulated games using MAME or ZSNES. I've tried doing so in Windows XP as well as a stripped down Ubuntu system.
Well, no harm trying though...
They are: Kalyway and iAtkos. Personally I've had better luck with Kalyway 10.5.2 than iAtkos.
If you're using omni-directional antennas, the most serious issue is that the multiple hops interfere with each other. deally, you'd have multi-radio nodes that use different frequencies, and a routing protocol that attempts to maximise path diversity, but the multiple radios increase total cost, and building a routing protocol that takes diversity into account is not completely trivial.
Exactly. Unfortunately the simple WRT54G setup is unable work with multiple directional antennas.Interestingly, I was advised to disable one of the two omni-directional antennas (and disable diversity) to improve the overall connectivity of the mesh. I didn't try it with two antennas to investigate any the diffences though. Would this really help?
I experimented with 5 units of WRT54G wireless routers running Freifunk firmware and I tried saturating the link with several G.729 VoIP calls. The system doesn't scale well. Over 3 hops, the number of calls greatly reduces as there is just too much random delay. In order for voice communication to be worthwhile, the latency cannot be more than 200ms although there are good forward error correction schemes and huge buffers.
Latency is a real problem especially when you are doing it over several hops. The "lag" isn't consistent. It will hit you at random interval, and that can be extremely irritating. This may be due to the use of CSMA/CA and RTS/CTS (depending on configuration). I haven't found a way to improve it though...
Thanks to my overclocked PC running at a super high core voltage. w00t!
I'm not karma-whoring but since I had just checked it out, so to whoever is curious, BASIC stands for Beginner's All-purpose Symbolic Instruction Code.
President of Malawi: Bingu wa Mutharika
Vice-President of Malawi: Cassim Chilumpha
Not too sure about the Prime Minister though...
Taken from here.
Wikipedia explains GMR but if you are keen to know about the effects of GMR on storage devices, you can refer to an article by IBM Research. There's even an animation on MR and GMR in action in storage devices.
Refer here.
What do you mean "didn't $300 bucks to install Mandriva"? Oh... FUCK!!!
Perhaps because a (regular?) Windows Update would require a reboot?
I find this trend more worrying...
Could this be due to the default processor scheduling setting for Windows XP / Vista? It can be found at:
System Properties -> Advanced tab -> Performance button -> Advanced tab -> Adjust for best performance of:
(*) Programs ( ) Background services.
I have a Canon i550 printer. One day the printer prompted me to change catridges as the ink has ran out. I ignored the warning and continued to print. I did it several times over different occassions because I believed the catridge was not completely empty. Then one day when I printed some stuff, the ink head moved but nothing was printed. I thought it had really ran out of ink so I bought another original ink catridge.
To my horror, nothing was printed, even though the printer driver reported a full ink catridge. I did several rounds of ink head cleaning but it still couldn't print.
I sent it to Canon for repair. The checked and told me my ink head was DAMAGED. I asked how the hell could the ink head got damaged when I used original Canon catridges? They eventually found out that I had forced forcefully used a depleted catridge on my printer, and they attributed that to be the cause of the damage.
In the end, I paid for a new inkhead, which cost more than 3 packs of new catridges. If only I had changed the catridges earlier!