I was doing some research on spam again and had to do some stuff with a couple of IP Addresses. That’s where “sort” came in handy as a tool to do what its name suggests.
Create a strong CSR and private key openssl req -new -nodes -newkey rsa:4096 -out server.crt -keyout server.key Parsing out the data within a certificate openssl asn1parse -in server.crt Checking a certificate/key modulus to see if they correspond openssl rsa -in server.key -modulus -noout | openssl md5 openssl x509 -in server.crt -modulus -noout | openssl md5 Convert a key […]
Today I came across a box with no /dev/null. Disturbingly that box even refused to boot. Here’s a quick fix in case: Boot with some liveCD and chroot or use some emergency shell and kill the defect dev file in case it’s still there and regenerate: rm -rf /dev/null mknod /dev/null c 1 3 chmod 666 /dev/null
Since I am fed up with licensing costs for some TeamViewer solution or any awkward or even complicated VPN stuff I did dig into x2go, a neat solution for sharing some beloved apps on various machines. After all the whole system works until I started to use more of its potential: file and printer sharing. That’s where I […]
Thinking back of the year 2012, the 5th of july I have to think of the hack that happened against LinkedIn. For anyone who missed the big news, feel free to catch up on Wikipedia. But why am I thinking of that stuff today? Well, today, five years after the security breach I do feel its consequences. Spam. […]
The LinuxDay in Dornbirn is over now. Last weekend to be correct. And I was there, part of the insane NOC team. But what does it mean to deal with such networks? Sure, there’s a lot of theoretical stuff what you could do. But there’s such an insane thing like ‘time’. Such convention networks are usually there for […]