Linux kernel/driver contract in RI
by John Spencer
We have a client with a 6+ month contract opening for a Linux expert in RI, south of Providence.
Linux internals Device Driver Development
Extensive experience with Linux Kernel Architecture development and configuration including Linux OS System Kernel Programming
Board Support Package experience
Ability to configure, build and release cross platform Linux tool chains.
Please contact me directly via email or phone (below) for more details.
Regards,
John Spencer
Connected Systems Partners
Office: (978) 455-5550 x208
Cell: (978) 621-9743
jspencer(a)connectedsp.com<mailto:jspencer@connectedsp.com>
www.connectedsp.com<http://www.connectedsp.com/>
GET CONNECTED!
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3 years, 5 months
Speech recognition software
by Andy Stewart
HI everybody,
Do any of you have experience or recommendations with any Free Software
that does speech recognition?
Thanks,
Andy
--
Andy Stewart (KB1OIQ)
Founder: Worcester Linux Users' Group
Founder: Chelmsford Linux Meetup Group
President: PART of Westford, MA (WB1GOF)
3 years, 6 months
Pile o Hardware for sale (some free)
by Pete Wason
Hi, I have a pile of Dell desktops and servers for sale. And a bunch of other stuff. Some for free as it is either very old or misbehaving in some way.
(6) Precision 690 workstations, some missing memory and/or drives, all functional. multi-RAID, multi-monitor. Giant 90lb. boxes, all metal.
(4) PowerEdge R300 1U rackmount servers, some missing memory and/or (SAS) drives, all functional.
(3) PowerEdge SC1420 tower servers, one has a RAID5 SCSI array, all functional.
(2) XPS GEN 4/5 workstations (gaming boxes from early '00s), w/ RAID1. Working.
A few Optiplex 740s, some working, some not. 2.9Ghz Athlon II 64 CPUs. Most need memory.
PowerEdge SC600, needs new fan and PS. Pentiam 2.4Ghz.
PowerEdge 2400, monster of a case, 8? SCSI drives in 2 arrays, dual PIII CPUs, makes an excellent bench+space heater.
A few older Dell desktops like a Dim 4550, Dim 5100, Opti 280GX, etc. Working.
Miscellaneous used HDs, D-Dock docking stations w/ removable HD modules, video cables, video cards, et al.
Broken 6-tape DDS4 autochanger, some new 20/40GB tapes
4-5 monitors which may be fixable; Samsung 20" 4/3
Cavalier 2-bay external RAID box, working w/ (2) 500GB drives
G-RAID 5-bay hot-swap enclosure, gutted, (was thinking about turning it into a mini-PC or a SCSI-tower for my Amiga :)
Other stuff..
No warranties, obviously. Caveat emptor, blah blah blah blah, yada yada..
If interested I can send you specs directly. Nothing individually priced higher than $375. Volume (or tonnage) discounts are available.
Please reply to: pwason(a)clarku.edu
--
Pete Wason * Hy Noom Publications * 5088655414 * codevark(a)aim.com * codevark
"Aborigine left speechless by steady disappearance of native dialects." -- The Onion
3 years, 6 months
Wireless mesh network question
by Andy Stewart
HI guys,
I am planning to setup a wireless mesh network at a ham radio event in June.
Each mesh node will consist of two Linksys WRT54GLs, much like the demo
I showed at a recent WLUG meeting.
One of the WRT54GLs will be on channel 6 and carry mesh network traffic.
The other one will be on channel 1 and allow generic wifi devices
access to the mesh network.
It seems like there would be an interference problem if every node
allowed wifi access on channel 1. Should this be 4 different wifi
channels? It is possible for a user to be within radio range of
multiple of them simultaneously.
Thoughts? I've never setup a wireless network before and could use your
advice. These mesh nodes will be placed outside in weatherproof
enclosures with battery power.
Thanks!
Andy
--
Andy Stewart (KB1OIQ)
Founder: Worcester Linux Users' Group
Founder: Chelmsford Linux Meetup Group
President: PART of Westford, MA (WB1GOF)
3 years, 6 months
Reminder! Meeting tomorrow! Feb. 12th 2015 at 7pm (Mid-Century Room) rm 331!
by Tim Keller
Hey Everybody,
This is just a quick reminder that we're having a meeting tomorrow at 7pm
in the Mid-Century Room (rm 331) in the student center.
Andy is going to be giving a talk about mesh networking! Afterwards we'll
do pizza at Tech!
Refreshments will be provided at the meeting as well.
Later,
Tim.
--
I am leery of the allegiances of any politician who refers to their
constituents as "consumers".
3 years, 6 months
sshd_config MaxStartups
by Jamie Guinan
Hi Group!
I'm seeking opinions about an sshd feature.
I was doing some work on a remote system (I did not set it up) that
seemed to be refusing ssh and scp connections randomly.
I looked into it, and finally stumbled across this from sshd_config(5),
MaxStartups
Specifies the maximum number of concurrent unauthenticated connections to the SSH daemon.
Additional connections will be dropped until authentication succeeds or the LoginGraceTime
expires for a connection. The default is 10.
Alternatively, random early drop can be enabled by specifying the three colon separated val‐
ues “start:rate:full” (e.g. "10:30:60"). sshd(8) will refuse connection attempts with a
probability of “rate/100” (30%) if there are currently “start” (10) unauthenticated connec‐
tions. The probability increases linearly and all connection attempts are refused if the
number of unauthenticated connections reaches “full” (60).
Indeed, the server had this setting,
MaxStartups 10:50:20
This just seems like a terrible option. You can DOS their server just
by making 20 connections and leaving them hanging. And it breaks any
automated scripts relying on ssh or scp (unless you wrap them in a
loop until they succeed, ugh).
My guess is that the reasoning behind this feature that it will filter
out a number of automated attacks. That seems no better than
security-by-obscurity, and I know how some of you feel about that. :)
Can you think of any sane reason to enable this feature, or for it to
even exist at all?
Best regards,
-Jamie
3 years, 6 months
linux networking question (reformatted for readability)
by Brad
(i appologize for the previous message that i completely unreadable.)
Dear W-LUGgers,
I had some strange network related behavior that left me baffled and i wanted
to hear some theories from more experienced network admins.
The network layout is the following. The network is pretty simple, external
traffic passes through a bridged-firewall (OpenBSD, my choice) into an OS X
server (not my choice) which handles NAT/DHCP/DNS et al., and all the office
computers are dhcp clients to the OS X server. The trouble machines are linux
(ubuntu) desktop clients.
The scenario is the following. I was doing work on the bridged firewall
(OpenBSD) and somehow caused it to kernel panic, oopsie! So the
bridged-firewall went down thus no-one had internet access, Dou! i quickly
bounced the machine. It came back on-line and clients were able to access the
internet, huzzah! But, the strange behavior was in two linux machines within
the network that were not able to access some external IPs. My linux desktop
could not access 8.8.8.8, when pinging, i could see an arp who-has request
originating from my machine, i could see the packet come into the OS X server.
But the request always went unanswered. The same behavior happened to another
linux desktop but with 192.48.178.134 (sgi.com). My desktop could ping sgi.com.
So each linux desktop had *different* unreachable IPs. The rest of the internet
was reachable. I tried clearing the arp-cache on the OS X server, then clearing
the NAT state tables, then I rebooted the OS X server, none solved the problem.
I finally renewed the dhcp lease on my linux desktop machine and that allowed
the ping to complete.
What would case this behavior? Could it be stale arp-cache on the linux
machine? ( I *should* have tried to clear the arp-cache on the linux machine
before i renewed the dhcp lease, but i didn’t think of that until after the
fact.) The linux machine was sending out arp who-has requests so would a stale
cache even matter? Why would no one answer the arp requests? I am not an expert
network admin (its just a side job since the company is only 15 people). I
don’t expect to get a resolution but i’m interested to hear any theories.
Thanks and cheers, — brad
PS. As a worcester transplant to boston, i am really jealous i don’t live
closer to attend meetings. The topics of late sound outstanding.
3 years, 6 months
Reminder: Next WLUG Meeting will be Thursday February 12th 2015 @ 7pm Rm 331 (Mid-Century Room)
by Tim Keller
Hey Everybody,
I'm glad to announce that our founder Andy Stewart will be doing a talk on
wireless mesh networking!
I expect this talk will be both entertaining and interesting.
Afterwards we'll be retiring to Tech for pizza!
Date: Thursday February 12th, 2015 7pm-9pm
Location: WPI Campus Center, Mid-Century Room 331
Later,
Tim.
--
I am leery of the allegiances of any politician who refers to their
constituents as "consumers".
3 years, 6 months
Opening, C++/Linux SW Eng, Permanent; Johnston, RI
by Tim Longua
Our Client in Johnston, RI is looking for a Software Engineer to help in the design and development of an exciting next generation platform. This candidate will be working with cutting edge tools and technologies.
Requirements Include:
* 7 + years C/C++ experience developing commercial products
* Experience developing distributed systems and applications on RedHat Linux or Embedded Linux is required
* Multithreaded and object oriented design experience
* Oracle, MySQL, or other database experience
* TCP/IP, Socket Programming, Qt and Hadoop are all plusses
If interested please send your resume to timL (at) connectedsp.com.
Regards,
Tim Longua
Connected Systems Partners
Connecting Top Talent with Top Companies
Office: 978-455-5550 x206
Cell: 603-303-8978
timL(a)connectedsp.com<mailto:jspencer@connectedsp.com>
www.connectedsp.com<www.connectedsp.com%20>
GET CONNECTED!
Unless otherwise explicitly instructed by sender, all information in this email is considered confidential and intended for the view and use of the recipient(s) only.
3 years, 6 months
