December 2006 - WLUG - wlug.mailman3.com

Re: [Wlug] Linksys Router

by Gary Hanley

On Sat, 16 Dec 2006, Adam Keck wrote: > Hello Gary, > I assume you mean WRT54GS ;). Yes, of course! > the dd-wrt open firmware supports some versions of your router. If you > cannot make your Linux dhcp client work, you might try changing the firmware > on your router to support Linux. I may go there someday, but I don't have the capacity for an extended downtime if I have problems. Thanks for the link. -- Gary

Dec. 16, 2006

Re: [Wlug] Linksys Router

by Gary Hanley

On Sat, 16 Dec 2006, Jamie Guinan wrote: > If the router always uses the same subnet on the client side, and > its not a laptop that you use in different envirionments, maybe > you could just pick a static address. I thought of that, although I haven't set up a static IP in a long time. What is the problem for the laptop? I have a year-old wireless-G HP Turion if that matters. -- Gary

Dec. 16, 2006

Re: [Wlug] Linksys Router

by Gary Hanley

On Sat, 16 Dec 2006, jmoyer(a)redhat.com wrote: > Do you know the details of this? You could just patch the dhcp client to > generate the broken requests. I know as much as I posted this morning, as I just found out. Patching the client seems like a good idea, but I'll bet that the problem is due to Linksys being out of spec to accommodate a Windows "enhancement" and the Linux folks are not going to patch that on principal. -- Gary

Dec. 16, 2006

Re: [Wlug] Linksys Router

by Adam Keck

Hello Gary, I assume you mean WRT54GS ;). According to <http://www.dd-wrt.com/wiki/index.php/What_is_DD-WRT%3F#Supported_Devices>, the dd-wrt open firmware supports some versions of your router. If you cannot make your Linux dhcp client work, you might try changing the firmware on your router to support Linux. If you want to change routers and you are interested in the Linux open firmware, then <http://www.dd-wrt.com/wiki/index.php/What_is_DD-WRT%3F#Recommended_Devices> has some good suggestions. -Adam On 12/16/06, jmoyer(a)redhat.com <jmoyer(a)redhat.com> wrote: > > ==> Regarding [Wlug] Linksys Router; Gary Hanley <gary(a)hanley.net> adds: > > gary> I recently upgraded my router to a WRT45GS and have been having a > gary> bear of a time trying to figure out why, when I boot Linux, I can't > gary> get an IP address from the router but with Windows I can. > > gary> It worked with the old router. It works with Windows. There are no > gary> DHCP tweaks in the router. What the hell is wrong? > > gary> Turns out that there a bug in the router. It doesn't like > Linux-based > gary> DHCP requests. This is a known issue and apparently Linksys has no > gary> intention of fixing it. But they did release a Linux-compatible > gary> version of the router instead. > > Do you know the details of this? You could just patch the dhcp client to > generate the broken requests. > > -Jeff > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > -- -Adam

Dec. 16, 2006

Re: [Wlug] Linksys Router

by Jamie Guinan

On Sat, 16 Dec 2006, Gary Hanley wrote: > I recently upgraded my router to a WRT45GS and have been having a bear > of a time trying to figure out why, when I boot Linux, I can't get an > IP address from the router but with Windows I can. > > It worked with the old router. It works with Windows. There are no > DHCP tweaks in the router. What the hell is wrong? > > Turns out that there a bug in the router. It doesn't like Linux-based > DHCP requests. This is a known issue and apparently Linksys has no > intention of fixing it. But they did release a Linux-compatible > version of the router instead. > > So my options are to either by the Linux-compatible version or find > another brand that supports Linux (or better, doesn't exclude Linux) > and is as good wireless performance-wise as the Linksys routers. > > Any recommendations? If the router always uses the same subnet on the client side, and its not a laptop that you use in different envirionments, maybe you could just pick a static address. -Jamie

Dec. 16, 2006

Re: [Wlug] Linksys Router

by jmoyer＠redhat.com

==> Regarding [Wlug] Linksys Router; Gary Hanley <gary(a)hanley.net> adds: gary> I recently upgraded my router to a WRT45GS and have been having a gary> bear of a time trying to figure out why, when I boot Linux, I can't gary> get an IP address from the router but with Windows I can. gary> It worked with the old router. It works with Windows. There are no gary> DHCP tweaks in the router. What the hell is wrong? gary> Turns out that there a bug in the router. It doesn't like Linux-based gary> DHCP requests. This is a known issue and apparently Linksys has no gary> intention of fixing it. But they did release a Linux-compatible gary> version of the router instead. Do you know the details of this? You could just patch the dhcp client to generate the broken requests. -Jeff

Dec. 16, 2006

Linksys Router

by Gary Hanley

I recently upgraded my router to a WRT45GS and have been having a bear of a time trying to figure out why, when I boot Linux, I can't get an IP address from the router but with Windows I can. It worked with the old router. It works with Windows. There are no DHCP tweaks in the router. What the hell is wrong? Turns out that there a bug in the router. It doesn't like Linux-based DHCP requests. This is a known issue and apparently Linksys has no intention of fixing it. But they did release a Linux-compatible version of the router instead. So my options are to either by the Linux-compatible version or find another brand that supports Linux (or better, doesn't exclude Linux) and is as good wireless performance-wise as the Linksys routers. Any recommendations? I know there is an open source firmware product that can be applied, but I'm not ready to try that yet as I work from home a lot and I'm in the middle of an important project so I need a stable VPN connection right now. -- Gary

Dec. 16, 2006

Re: [Wlug] Balloon board

by Jamie Guinan

On Thu, 14 Dec 2006, Andy Stewart wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Andre Lehovich wrote: > > After the meeting a few of us chatted about embeded hardware projects. The > > Balloon Board, based on the Strongarm CPU, has all open specs. Unfortunately > > it looks like a sample board is about $700. http://balloonboard.org/ > > > > An example product built using the board: > > http://www.toby-churchill.com/english/product_info/index.html > > > > --Andre > > Other possibilities for Linux friendly embedded projects: > > I made a firewall with Linux software with the Routerboard: > http://www.routerboard.com > > The USB development board looks interesting, but I haven't actually > tried it: > http://www.delcom-eng.com/ > > These look rather neat, but seem to be a little expensive IMHO, but not > unreachable: > http://www.gumstix.com > > The embedded development kits look interesting as well, but the prices > are exceedingly high. Two examples: > http://www.arcom.com/devkit-linux-apollo.htm > http://www.arcom.com/devkit-linux-pxa270-zeus.htm > > I don't think this vendor offers Linux support, but Linux does work with > these products: > http://www.hobbyengineering.com/SectionBS.html Here's a few more... 1) pickit1/pickit2, very reasonably priced, http://www.microchipdirect.com/ProductDetails.aspx?Catalog=BuyMicrochip&Cat… 2) NSLU2, $99 at many retailers, and I've seen quite a few on eBay. XScale (ARM), USB 2.0, Ethernet, http://en.wikipedia.org/wiki/NSLU2 One of my "someday" projects is to make my own computer-controlled alt-azimuth mount for amateur telescopes. http://en.wikipedia.org/wiki/Altazimuth_mount Or even just a replacement controller for the existing motorized mount. -Jamie

Dec. 15, 2006

Fuse and other users

by Jamie Guinan

The other night I was trying to find the code where FUSE [dis]allowed other users to access files, but I couldn't remember where it was. Found it in fs/fuse/dir.c, /* ... * For this reason only those processes can call into the filesystem, * for which the owner of the mount has ptrace privilege. This * excludes processes started by other users, suid or sgid processes. */ static int fuse_allow_task(struct fuse_conn *fc, struct task_struct *task) { if (fc->flags & FUSE_ALLOW_OTHER) return 1; if (task->euid == fc->user_id && task->suid == fc->user_id && task->uid == fc->user_id && task->egid == fc->group_id && task->sgid == fc->group_id && task->gid == fc->group_id) return 1; return 0; } The FUSE_ALLOW_OTHER flag is set when you invoke a fuse program like sshfs with "-o allow_other". -Jamie

Dec. 15, 2006

Re: [Wlug] Balloon board

by Andy Stewart

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Andre Lehovich wrote: > After the meeting a few of us chatted about embeded hardware projects. The > Balloon Board, based on the Strongarm CPU, has all open specs. Unfortunately > it looks like a sample board is about $700. http://balloonboard.org/ > > An example product built using the board: > http://www.toby-churchill.com/english/product_info/index.html > > --Andre Other possibilities for Linux friendly embedded projects: I made a firewall with Linux software with the Routerboard: http://www.routerboard.com The USB development board looks interesting, but I haven't actually tried it: http://www.delcom-eng.com/ These look rather neat, but seem to be a little expensive IMHO, but not unreachable: http://www.gumstix.com The embedded development kits look interesting as well, but the prices are exceedingly high. Two examples: http://www.arcom.com/devkit-linux-apollo.htm http://www.arcom.com/devkit-linux-pxa270-zeus.htm I don't think this vendor offers Linux support, but Linux does work with these products: http://www.hobbyengineering.com/SectionBS.html Well, that's it for now. Later, Andy - -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA, USA http://www.wlug.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFFgehXHl0iXDssISsRAtWBAJ9jm5HEBvR+KspVYz+pZy5J9H4xTACeM3US LBI/kttIlfTvMK2O4Hd0XrM= =lcEv -----END PGP SIGNATURE-----

Dec. 15, 2006