- WLUG - wlug.mailman3.com

Red Hat, Westford MA career day

by Tim Burke

FYI - we're having an open house next Wednesday. http://bostonworks.boston.com/events/openhouses/redhat.shtml

Aug. 20, 2002

Re: [Wlug] REMINDER: WLUG BBQ

by desdinova＠soupforare.net

On 17 Aug 2002 at 20:59, Andy Stewart wrote: > > HI everybody, > > The WLUG BBQ will be held on Thursday, August 22nd starting at 6 PM. > Directions to Doug Waud's house, a.k.a BBQ Central, can be found on > the WLUG website. > > Please RSVP if you plan to attend. I've received 3 or 4 RSVPs and I'm > sure there will be more people than that. We need to have an idea how > much food to purchase. Je responde. That's the correct RSVP, isn't it? I don't remember my french teachings :) Thanks James KB1FJQ

Aug. 18, 2002

REMINDER: WLUG BBQ

by Andy Stewart

HI everybody, The WLUG BBQ will be held on Thursday, August 22nd starting at 6 PM. Directions to Doug Waud's house, a.k.a BBQ Central, can be found on the WLUG website. Please RSVP if you plan to attend. I've received 3 or 4 RSVPs and I'm sure there will be more people than that. We need to have an idea how much food to purchase. WLUG will supply the standard BBQ fare and some soda and munchies. If you want beer or wine, you may BYOB and we'll have a way to keep it cold. Feel free to bring your own dessert or cold salad items if you so choose. Doug's house has a pool so bring towels and such! If you can think of anything else, let me know. Otherwise, I'll see you all on Thursday. Later, Andy -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA USA http://www.wlug.org

Aug. 18, 2002

Kernel int-13 interface?

by Chuck Homic

Hey, this one goes out to all you kernel hackers out there. After 4 years, I've once again become interested in installing Linux on my HP OmniBook 300. Because it's an aswesome computer, and I think DOS 5 is a complete waste of its skill. [Background. The OB300 is a vintage 386-20, with a passive reflective 640x480 LCD display. Basically an oversize TI calculator running DOS] Anyway, from my first tests, I discovered that I can indeed boot the kernel using loadlin. But it immediately freaks out because it can't read (or even think about) my primary media... solid-state PCMCIA flash cards. Now, I briefly tried looking up some data on the OB300's PCMCIA chipset (I think the first standard was still being developed when this computer was made) and quickly decided that wasn't the route to go. And HP told me to go to hell when I asked. But DOS seems to work just fine using the int 13 interface to access the flash disks. So now my question... can I do that in Linux? I don't see any block device support (and most people would agree an int 13 block device would be stupid), but I think I can write one myself. All it would have to do is make the switch into real mode, call the int 13 interface, and then come back. Will Linux tolerate that? As far as I know, many drivers use a real mode interrupt on laptops to trigger their power saving capabilities (suspend, etc...), so I suspect it would be okay. Can anyone stop me before I go too far? Or should I go ahead and write this thing? -Chuck

Aug. 16, 2002

potential mailing list problems

by Frank Sweetser

Just a quick heads up - the WLUG mailing list server seems to be having some issues, and since I won't be around to fix it until Monday, it may not be stable over the weekend. I have a backup of the mailing list data, though, so nothing should be lost once things are all fixed up. -- Frank Sweetser fs at wpi.edu, fs at suave.net | $ x 18 Full-time WPI Network Engineer, Part time Linux/Perl guy | Soitainly. I was assuming that came with the OO-ness of it. -- Larry Wall in <199710011802.LAA21692(a)wall.org>

Aug. 15, 2002

Re: [Wlug] USB Support in Linux 2.4.18

by Andy Stewart

On Saturday 10 August 2002 10:10 pm, chuck wrote: > How can I tell if a specific USB device, in this case a removable USB > hard drive, is supported by my kernel? I know that Linux 2.4.18 has > "support" for USB devices. Does this mean all USB devices or just a > few? I would think that the OS talks to the USB controller via a series > of well documented commands and that its up to the controller to talk to > the specific USB device. > > Does this make sense, or is there more to it? > > Thanks, > Chuck Check this website: http://www.qbik.ch/usb/devices/ It has a list of USB devices supported by the kernel. In many cases, there are separate modules for USB devices. Hotplug (when it works) is supposed to load these modules automatically. In my personal experience, I have found USB support to be spotty and not always reliable. However, when it does work, it tends to work fairly well. I recently took my printer off of USB and put it back to the much more reliable parallel port and have had no problems since. Later, Andy -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA USA http://www.wlug.org

Aug. 11, 2002

Firewall Stops Working...

by jose sanchez

> Hello: > > This is my first post to the list and I would like > to > know if anyone have experienced or heard of what's > happenning to my box. > > I have a RH7.2 box as a firewall running an iptables > script. The box has three NICs. One for a LAN, one > for > a DMZ, and one for the Internet connection running > dhcpcd to get an IP from a cable modem (isp: Road > Runner). Everything works fine but, after hours of > innactivity I cannot access the Internet from the > LAN. > I can do everything else (chat, ftp, ssh, ping, > traceroute, etc...) from the LAN to the outside > world. > > > I was thinking it might be something with the > expiration of the IP lease but I have a chain to > take > care of that: > > iptables -A INPUT -i $INTERNET -d udp -s > $DHCP_SERVER > \ > --sport 67 --dport 68 -j ACCEPT > > iptables -A OUTPUT -o $INTERNET -d udp -d > $DHCP_SERVER > \ > --dport 67 --sport 68 -j ACCEPT > > These chains should do it but unfortunately in order > for me to get the box back to normal I have to > restart > it and also restart the modem. > > Thank you in advance for your help. > > > > __________________________________________________ > Do You Yahoo!? > HotJobs - Search Thousands of New Jobs > http://www.hotjobs.com > ===== "An ounce of gold cannot buy an ounce of time." - Anonymous www.whmicro.com __________________________________________________ Do You Yahoo!? HotJobs - Search Thousands of New Jobs http://www.hotjobs.com

Aug. 11, 2002

Re: [Wlug] USB Support in Linux 2.4.18

by Wesley Allen

Chuck, most mass-storage devices are supported by the usb-storage module. Plug in the drive go to a shell and type "usbview" the list should have your drive there, and may tell you what driver it uses. Wes On Sat, 2002-08-10 at 22:10, chuck wrote: > How can I tell if a specific USB device, in this case a removable USB > hard drive, is supported by my kernel? I know that Linux 2.4.18 has > "support" for USB devices. Does this mean all USB devices or just a > few? I would think that the OS talks to the USB controller via a series > of well documented commands and that its up to the controller to talk to > the specific USB device. > > Does this make sense, or is there more to it? > > Thanks, > Chuck > > > > > _______________________________________________ > Wlug mailing list > Wlug(a)mail.wlug.org > http://mail.wlug.org/mailman/listinfo/wlug > -- This message may be digitally signed. For my public key, e-mail me a request.

Aug. 11, 2002

USB Support in Linux 2.4.18

by chuck

How can I tell if a specific USB device, in this case a removable USB hard drive, is supported by my kernel? I know that Linux 2.4.18 has "support" for USB devices. Does this mean all USB devices or just a few? I would think that the OS talks to the USB controller via a series of well documented commands and that its up to the controller to talk to the specific USB device. Does this make sense, or is there more to it? Thanks, Chuck

Aug. 11, 2002

Re: [Wlug] dhcp clients

by Brad Noyes

On Sat, Aug 10, 2002 at 01:04:49PM -0400, Charles R. Anderson wrote: > On Sat, Aug 10, 2002 at 11:47:52AM -0400, Brad Noyes wrote: > maitre> Hi All, > maitre> I got my home network rigged up to do dynamic dns with dhcp. It seems that the > maitre> linux and fBSD dhcp clients don't send the hostname to the dhcp server, so no > maitre> name record is created for those clients. Does anyone know how to do this? > maitre> (windows clients seem to send the hostname okay). wow ... first i'll answer your questions. > > What is the DHCP server? What is the DNS server? How are the servers > configured? DHCP server from ISC dhcpd-3.0p11 DNS server from ISC bind-9.1.3 (both on same machine, OS is OpenBSd) they are configured so the dhcpd gets a request and updates named, both A records and PTR records > > If you are using ISC dhclient, you can configure /etc/dhclient.conf with > a line like this: > > send host-name "foo.bar"; > > or if you want your configured hostname to override what the server > sends back: > > supercede host-name "foo.bar"; ahhh, okay i get it. I did a seach for dhclient.conf on my client machien and i couldn't find one, so i created one, read the man page, and i was able to get linux to send the hostname. > > However, there may be more to the story than just that... > > There are a few different ways DDNS can be done. One way is to have the > DHCP client update the forward DNS itself, and tell the DHCP server to > update the reverse DNS to match. That way the client can choose it's > own DNS name, and tell the DHCP server to set the PTR record to that > name (since the DHCP server will have the authority to update PTR > records in the subnets it is serving). Of course, the client must have > permissions on the forward DNS zone to update it. Usually TSIG or SIG0 > cryptographic signatures are used to provide secure DNS updates for this > purpose (however Windows DNS servers don't support TSIG or SIG0, only > the GSS proprietary protocol). This is something that i don't want becuase i have a windows clients in the house. > > The other way is to have the DHCP server update BOTH the forward and > reverse DNS. In this case, usually the server dictates both the forward > and reverse DNS domains, and can either use the client-provided hostname > or choose it's own hostname for the client. This is what i have at the moment. The networks is small enough where i know that names will not colide. > > These behaviors are controlled by the DHCP FQDN option (82). The client > can request that it update the forward DNS, or request that the server > update the forward DNS. The server can either accept what the client > requests, or reject it. If the server rejects the client's requests for > the client to update the DNS, the client should not attempt to perform > the update. i have the dhcpd server do all the work. Easier for me to control and i don't have to create keys for all the clients. > ISC DHCP supports the standard form of DDNS described above (unsecure > updates or TSIG security only). You can't update Windows DNS servers > securely with it. You can however update Windows DNS servers if > security isn't configured, or you can have a Windows DHCP server update > so-called "legacy" clients without using the DDNS protocol above. > Having never used Windows DHCP/DNS servers, I wouldn't know how to > configure that... All the servers involved are on OpenBSD so this is not a problem. > > To have the ISC dhclient perform DDNS and update it's own A record put > this in dhclient.conf: > > send fqdn.fqdn "foo.bar."; > send fqdn.encoded on; > send fqdn.server-update off; > > Change the last option to "on" to request the server to update the A > record. The server is doing the updating here so i would have this set to 'on' > > There may be more stuff to configure, such as zone statements and keys, > depending on what servers you are using and how they are configured... This is plenty on information for the time being. I think i have most things working now. Thanks Charles! --brad

Aug. 10, 2002