Posts

Showing posts from August, 2025

Hans-Peter Dürr: The spiritual is the driving force

Image
Let's say I mean I'm a dyed-in-the-wool quantum physicist. So that means that I fully consciously took part in this development that took place at the beginning of this century. It started with Planck, with Einstein and so on. But the important thing is that Planck and Einstein, who started this development, actually didn't believe it. Because they interfered, uncertainty principle and so on and then quantum physics and so on. They said it can only be a transitional stage. And it was the young people, Werner Heisenberg, in whose office I am sitting here, Werner Heisenberg at the age of twenty, who said: this is the breakthrough! We need to see reality totally differently. No longer material, but much more open.  For these people, the difficulty then arose: how can something that is so open, which could also include people at once, because we never wanted to submit to determinism, because we naturally thought of ourselves as creative. In such an open world, how can you ever ...

Linux Firewall (iptables) commands for DDoS attacks

Image
You may need to check your logs and block some IPs manually on a regular basis. Always use ipsets for efficient filtering, especially when dealing with larger numbers of entries. sudo ipset create gvset1 hash:ip sudo ipset create gvset2 hash:net sudo iptables -A INPUT -m set --match-set gvset1 src -j DROP sudo iptables -A INPUT -m set --match-set gvset2 src -j DROP For example, any IP that has more than 10 access denied or page not found errors in the last 24 hours and are not Google or MSN IPs. Ensure that the hosts do not resolve to Google search, MSN search or the Amazon crawler. It's usually ok to resolve to Amazon AWS. Use at your own risk. This method may block some legitimate ISPs. Also block the SSH port ( 22 ) on your server hosting provider firewall, if possible. Important: Make sure your own IP is not in a range before running the commands. Also ensure that any IPs within the googlebot IP range below, are removed. sudo iptables -D INPUT -s 66...