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3239 discussions

Geeky schwag offered in exchange for DNS usage reports
by David Nicol 10 Aug '13

10 Aug '13

who works at ISPs any more? DNS resolving seems awfully centralized these days, what with the high-bandwidth backbones and overengineered central servers. ---------- Forwarded message ---------- From: bert hubert <bert.hubert(a)netherlabs.nl> Date: Fri, Aug 9, 2013 at 2:05 PM Subject: [Pdns-users] Want to help PowerDNS? Want a free PowerDNS mug? Please send in (anonymized) PCAPs! To: pdns-users(a)mailman.powerdns.com, pdns-announce(a)mailman.powerdns.com Hi everybody, Over the years, DNS access patterns change. New versions of popular operating systems, whole new operating systems, DNSSEC, larger IPv6 deployments, the shift to mobile etc mean that the strategies for best DNS performance are changing. A few years ago we asked you to help us optimize the PowerDNS Recursor by sending us (anonymized) dumps of resolver traffic, and that was tremendously helpful for us in improving the performance of the recursor. We are now asking you to help us again, since we've observed that our few years old traffic is no longer representative of all the new devices on the internet these days. And to help you along, we'll lovingly ship you some PowerDNS mugs and pens to thank you for your PCAPS! We will of course not share your PCAP files with anybody, and we also provide the 'dnswasher' tool to remove your customer's IP addresses from the dumps. What we are looking for is traffic from/to PowerDNS Recursors. To record, try: # tcpdump -i eth0 -w for-powerdns-from-x -C 1000 -s 1600 port 53 (or -i any) And leave this running for as long as you want. It will generate 1G large PCAP files which will help us tremendously. To test yourself, feed the file generated to 'dnsreplay' for example, or 'dnsscope' and get statistics on how well you are doing. To submit the files to us, optionally feed them through 'dnswasher' to remove customer IP addresses, and then upload to ftp://training.powerdns.com/anon This anon directory is world writable, but not readable. Filenames have to be unique however. If you want, we can provide feedback on what your PCAPs have taught us, please send email to powerdns.support(a)powerdns.com. This is also the place to send your address for the free PowerDNS mugs & pens! To learn more about dnsreplay, dnsscope, and dnswasher, see http://doc.powerdns.com/html/analysis.html . To download, head to: https://autotest.powerdns.com/job/auth-git-semistatic-deb-amd64/ https://autotest.powerdns.com/job/auth-git-semistatic-rpm-amd64/ https://autotest.powerdns.com/job/auth-git-semistatic-deb-i386/ https://autotest.powerdns.com/job/auth-git-semistatic-rpm-i386/ But, to clarify, any pcap is good for us, if it is washed, analyzed or not. Thank you very much, and we hope to be receiving lots of packets! Bert -- PowerDNS Website: http://www.powerdns.com/ Contact us by phone on +31-15-7850372 _______________________________________________ Pdns-users mailing list Pdns-users(a)mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users -- You've got to wiggle before you can crawl

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Setting Gnome resolution from the command line
by Charles Steinkuehler 19 Jul '13

19 Jul '13

Speaking of Gnome, does anyone know how to change the Gnome resolution from the command line? I don't mean using xrandr or fbset (I've tried and those don't work...this is a BeagleBone with Angstrom). When the HDMI interface is working, I can run the display settings GUI and pick from a few resolutions auto-detected via EDID. What I need is a way to ask Gnome from the command line what display options are available and select one when the system pics a resolution the HDMI monitor doesn't like (so there's no visible GUI). I can't pull up anything on setting Gnome desktop settings via the command line on Google, but maybe I'm not asking the right way. Anyone know Gnome well enough to point me towards where to start looking? -- Charles Steinkuehler charles(a)steinkuehler.net

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Cool new software installer from Gnome
by Billy Crook 19 Jul '13

19 Jul '13

Modeled after various aspects of browser, phone, and tablet "app stores". Uses existing commandline package mangers as backend. I thought the mock-ups were too cool to not share! https://wiki.gnome.org/Design/Apps/Software

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SAMBA4 share confusion
by Michael Haworth 26 Jun '13

26 Jun '13

Admittedly, I should be past this point, but I'm not... Trying to share a directory via SAMBA4 so that a Windows machine can write to it (transferring 700+ GB of email data). I have created the share and marked it as Writable. I've gotten the share to show up when browsing, and I have assigned allowed users via the Webmin SAMBA interface. When I browse to the share it requests my credentials (local UNIX) and then shows me the available shares, but it won't let me browse the shares. After a bit of man'ing and googling, I have gotten even more confused as there seem to be about 500 different solutions... Any pointers/advice/help? -- Mike

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list has been very quiet
by David Nicol 01 Jun '13

01 Jun '13

Anyone hiring sysadmins? -- You've got to wiggle before you can crawl

2 1

Invitation to connect on LinkedIn
by Brandon Holtsclaw 01 Apr '13

01 Apr '13

LinkedIn ------------ I'd like to add you to my professional network on LinkedIn. - Brandon Brandon Holtsclaw PHP Drupal Development at Freelance Kansas City, Missouri Area Confirm that you know Brandon Holtsclaw: https://www.linkedin.com/e/k4llky-hf0asc2f-3j/isd/12107134766/VFK-J-37/?hs=… -- You are receiving Invitation to Connect emails. Click to unsubscribe: http://www.linkedin.com/e/k4llky-hf0asc2f-3j/qb68emPbaSzyPvT9-5avWe9IWm/goo… (c) 2012 LinkedIn Corporation. 2029 Stierlin Ct, Mountain View, CA 94043, USA.

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Job Openings
by Jonathan Hutchins 26 Mar '13

26 Mar '13

We have a couple of job openings where I work that haven't been officially announced yet, so I don't have formal details. One position is a Linux Administrator here in Kansas City. Currently at the Bannister complex, due to move else somewhere in the city by 2014. Oracle knowledge is a big plus. This is not Windows with a little Linux on the side, it's straight Linux. The other position we're going to try to fill in Fort Worth first, and if we don't get the right guy there we'll consider placing someone here. Windows administrator with good knowledge of Citrix. You'll need to go through Tek Systems on contract-to-hire for 3-6 months, but if you want early consideration go ahead and send me a resume. I don't have any salary information yet, but we won't be above current averages.

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DOS prevention
by J. Wade Michaelis 18 Mar '13

18 Mar '13

I have a CentOS web server that has recently been brought to a halt on two separate occasions. Checking the access.log, it appears that it was a Denial of Service (DOS) attack (hundreds of HTTP requests in a very short time, all from a single IP address). I want to prevent these types of attacks from bringing the server to its knees. We have a hardware firewall (SonicWall) in place, but it isn't quite new enough to run the firmware that allows rate-limiting. I have found a number of tutorials that show how to do this type of thing with IPTABLES. Is there a better solution? Supposing I go with IPTABLES, do I need to include rules to allow FTP and SSH (the only other services on the server)? Would any of you be willing to assist me with this? Thanks, ~ j. jwade(a)userfriendlytech.net

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Re: invite to topeka for technical talks and workshops
by Mark Hutchings 27 Feb '13

27 Feb '13

Hi Mike, Have you checked around Lawrence? I know back around 7 years ago, there was a group of KU students (20+ at times) that would meet up once in a while for a linux meetup. Though it was on the KU campus, it wasnt limited to just KU students. This doesnt quite answer your original question, but Lawrence is right around the corner from Topeka and might be a lot easier for you to travel to. I cant find a web page on this meetup, but maybe one of these guys in this group could help you. http://www.ittc.ku.edu/kurt/ (KUSP: Kernel/User Systems Programming). And then there's FudCon that was held back last month, which you might want to plan to attend next year if they have another one. https://fedoraproject.org/wiki/FUDCon:Lawrence_2013 Another tip is LinuxPro Magazine is published from Lawrence, KS. Maybe one of the guys there could point you to a group closer that you're not aware of.

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invite to topeka for technical talks and workshops
by h4ck3rm1k3＠hushmail.com 16 Feb '13

16 Feb '13

Hi all, have resubscribed using a new mail to free up my gmail from mailing lists. we have moved to topeka and am now working on linux systems at payless here. In my free time I am working on promoting open source software and open knowlege. We dont have a car by choice, so my transportation is limited to public transportation which is almost non existent here in topeka, there is only one train to KC at 5am in the morning. There are many user groups in KC like java user groups and groups in lawrence, but it is very hard to find people to go there with me who have cars. have been attending the http://www.adastralabs.org/ meetings on thursday and we discussed there the options of making bigger events. So, we would like invite speakers from the list to come to topeka to hold talks and workshops, is possible we would create an event here at the library, university or at some office (like pc911), Ideally we would have 2-3 advance notice and would promote the event locally. For travel expenses we will have to discuss this topic, we will look at fundraising to cover travel costs. Please let me know if you would like to come to topeka at this mail or jamesmikedupont(a)gmail.com you can call call me on my mobile 908 347 4117 thanks mike

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