unimportant

Dell’s 10gbase-t network cards on Intel’s x540 chips

by .pQd
we’re upgrading few servers at work to have 10gbit/s connectivity. to keep things familiar i’ve decided to stick with [power hungry and latency-inducing] cat7 copper cabling and 10gbase-t. there are few dell poweredge r620 and r630 to be upgraded. currently those have proprietary broadcom-based daughter-cards with 4x 1000base-t ports. i preferred to replace them with ... Read More

drac5 / 6 with latest java 1.8.60

by .pQd
new java, new headaches. but my colleague figured a way how to get the ip kvm working again with the latest java. here are his findings: ingredients: windows 8.1, j2se 1.8.60, firefox 41 or chrome 45.0.2454.99: go to the Control panel > java in the General tab: Settings > Delete files – mark all the ... Read More

more smaller icons in the windows 8 alt+tab / cool switch

by .pQd
recently i’ve moved from win7 to win8. i tend to have dozens of applications open and the default number of programs displayed after pressing alt+tab in win8 is too low. this registry change brings the win7-alike layout and adds more columns and rows: you might want to log off and log on for all the ... Read More

openvpn point-to-point server listening both on v4 and v6

by .pQd
at work i have openvpn between OVH dedicated server and our datacenter. due to varying bandwidth we sometimes use udp over ipv6 and sometimes over ipv4 as an encapsulation method. whenever we did the switch we always had to reconfigure both ends of the tunnel. it turns out that with recent openvpns and kernels it’s ... Read More

squid3 no longer working after upgrade to jessie

by .pQd
on one of the servers i’ve just upgraded to jessie i got my squid3 bricked. i could see the process in ps, yet it did not listen on tcp/3128: restarting it did not give anything interesting in /var/log/squid3/cache.log: after a while of clueless googling i thought – maybe there’s some problem with communication over loopback. ... Read More

upgrade from wordpress 4.1.x to 4.2.x broke my menu editor

by .pQd
i’ve done a routine upgrade of wordpress 4.1.x to 4.2 and later 4.2.1. all seemed fine until the day i wanted to manually adjust the menu structure using wp-admin > appearance > menus. each attempt of saving my menu resulted in it being wiped out completely

BLKDE3815TYKH0E headaches

by .pQd
we’re setting up a small computer that will act as vpn end-point. we decided to try something smaller this time – BLKDE3815TYKH0E. as it turned out it’s not as well polished as one would expect from intel. my colleagues had to pull out debian wheezy usb pend-rive with the installer to be able to finish ... Read More

sip-audio-session, new libxml2

by .pQd
i’m using nagios to wake me up. not every day – only when there’s some outage. i have pair of nagios servers – one in Sweden, one in Poland – they cross-check one another and – for the most critical problems – send sms and make a phone call. for sms’es i’m using budgetsms.net, for ... Read More

xwiki, html macro tag and unwanted javascript

by .pQd
xwiki – by default – allows contributors to embed arbitrary html, including javascript. it does not take much effort to include something like: then you just need to lure your victim into visiting given wiki page while being logged – you’ll get a http request containing that person’s cookie that can be re-used to impersonate ... Read More

useful tools for [web] malware removal

by .pQd
http://sitecheck.sucuri.net/ for checking if a live website is referring to some malicious js / having unwanted iframes https://www.rfxn.com/projects/linux-malware-detect/ and http://www.clamav.net/index.html and http://www.eset.com/ for scanning files for unwanted conten from the command line:

T-Centralen to Arlanda – available public transport options

by .pQd
there are few options of getting from Stockholm Central station [ T-Centralen ] to the Arlanda airport: Flygbuss – from City Terminalen next to the train station – 105SEK one way SJ / regular train – there are few trains each day going from Stockholm to Uppsala – starting from 125SEK if booked in advance. ... Read More

Service check did not exit properly from nagios plugin in perl

by .pQd
i’m setting up v6 on a few internet-facing servers. i’ve googled a bit and found dual-stack ipv4+ipv6 monitoring with nagios. i’ve started using the wrapper script check_v46 referred there and it works nicely. but i’ve run into a problem – execution of plugin gave me: