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Domain: glennf.com
Stories and comments across the archive that link to glennf.com.
Stories · 6
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New iPod Touch Has an 802.11n Chip
eggboard writes "iFixIt has discovered a Broadcom 802.11a/b/g/n chip in the just-announced iPod touch (32 GB and 64 GB) models that uses single-stream 802.11n. Single-stream doesn't get the full power of N, but it boosts speed enough that — along with space-time block encoding, a feature coming soon to Wi-Fi access points with two or more radios — the iPod touch could be an effective networked media server, for streaming and transfer, possibly through the new iTunes Home Sharing feature." -
The Real Story On WPA's Flaw
Glenn Fleishman writes "The reports earlier today on WPA's TKIP key type being cracked were incorrect. I spoke at length with Erik Tews, the joint author of the paper that discloses a checksum weakness in TKIP that allows individual short packets to be decrypted without revealing the TKIP key. I wrote this up for Ars Technica with quite a bit of background on WEP and WPA. Tews's paper, co-written with Martin Beck, whom he credits as discovering and implementing a working crack (in aircrack-ng as a module), describes a way to use a backwards-compatible part of TKIP to exploit a weakness that remains from WEP. ARP packets and similarly short packets can be decoded. Longer packets are likely still safe, and TKIP hasn't been cracked. Don't believe the hype, but the exploit is still notable." -
Apple to Allow Virtual Mac OS X Server Instances
Glenn Fleishman writes "Apple has changed its license for Mac OS X Server 10.5 (Leopard Server) to allow virtualized instances. VMware and Parallels are poised to offer support. This probably presages a thoroughly overhauled Xserve product with greater capability for acting as a virtual machine server, too. 'Ben Rudolph, Director of Corporate Communications for Parallels, told me, "Enabling Leopard Server to run in a virtual machine may take some time, but we're working closely with Apple on it and will make it public as quickly as possible." Pat Lee, Product Manager at VMware, concurred, saying "We applaud Apple for the exciting licensing changes implemented in Leopard Server. Apple customers can now run Mac OS X Server, Windows, Linux and other x86 operating systems simultaneously on Apple hardware so we are excited about the possibilities this change presents." Although neither company committed to specific features or timetables, it appears as though we should be seeing virtualization products from both that will enable an Xserve to run multiple copies of Leopard Server in virtual machines.'" -
U.S. Bans Some Cellphones For Patent Reasons
runner_one writes "According to the New York Times, A federal agency has banned imports of new cellphones made with Qualcomm semiconductors because the chips violate a patent held by Broadcom. The International Trade Commission said today that the import ban would not apply to mobile phone models that were imported on or before June 7." Update: 06/08 13:05 GMT by KD : Glenn Fleishman notes that Apple's iPhone will be allowed into the country, since it doesn't use any 3G chips. He adds that Apple "might have the most advanced smartphone on the market unless President Bush or his trade representative overturn the ruling (which they have the power to do)." -
New Power Macs Have Crippled DDR Memory?
eggboard writes "According to Rob Art Morgan, who has tested this, the new Power Macs from Apple that use DDR (double data rate) memory -- like the Xserve rank-mount unit -- cannot access the memory any faster than the cheaper and slower SDRAM found in the previous system arch. A controller limits the data rate to 1 GB/s, while DDR could work more than twice as fast. Unfortunately, this makes mincemeat of the architecture, as it bus-/memory-bounds 2D and 3D graphics and rendering." -
Cheap Wireless 802.11b Bridging
eggboard writes "You can bridge two wired networks using two cheap Linksys 802.11b access points. This isn't exactly new, but the article I wrote, which just went up on Friday, describes in excruciating detail how to configure the units. The big news is really price: the WAP11 described is about $185 with a manfacturer's rebate. Using higher-gain antennas than the ones shipped with the WAP11 and/or tuning line-of-sight access, you've either figured out how to hook up a neighborhood of separate wired networks, or how to link multiple offices cheaply."