Category: IT-Security

Script DNS Blocker DNSMASQ

If you tested pihole, you perhaps look for a smaller Command Line version? Install dnsmasq by: sudo apt-get install dnsmasq Here DNS Rule Injector Script (copy & paste): blocker.sh # www.linuxonlinehelp.eu 2019 # DNS Blocker for Small Linux with dnsmasq # #!/bin/bash # goto tmp (tmpfs) cd /tmp/ # get URL-Blocklists wget -O blocklist.txt https://v.firebog.net/hosts/Kowabit.txt […]

Briar decentralized Peer to Peer Messenger

If you have used Whatsapp, Facebook Messenger, Telegram etc. last time and other Messenger, you perhaps now looking for a more secure Messenger, thats the point to Test Briar Messenger a Peer to Peer Messenger which uses NO SERVER as INTERFACE ! Source: briarproject.org Download-APK ..kick your old Messenger  from the Phone !!  

mj12bot hammer mediawiki

Here some IP’s of some Botnet Servers of mj12bot.com: the Botnet ignores robots.txt and hammers on Mediawiki’s! A sorted output of a Log done with :   cat /var/log/apache2/other*.log|grep MJ | awk '{ print $2 }' | sort | uniq -c | sort -n Output for ufw Firewalls: 162.210.196.97 144.76.3.131 148.251.195.14 5.9.158.195 173.208.157.186 176.31.255.65 178.63.34.189 […]

5G Mobile Network opens Pandora’s Box

5G will it make possible to attack mobile Devices and Cars 10 times faster Users will not recognize attacks or uploaded data the wider data bandwith will it make possible to attack much more efficient Remark: checkout if you really need this mobile network, cause slower is sometime safer against automated tools slower mobile network […]

Firefox Stop Home Calls

During my last Network Monitoring found out that MANY of “free” Software calls home permanent Article: https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections .. if you want to be safe, block all OUTGOING Traffic by a Firewall or local DNS Server and use a Proxy with Auth Mechanism!

Major Bug: UFW stopped thru logrotate

On Debian Sid i have seen that ufw service is stopped on logrotate!! Its a bad known bug! Workaround: Set all Services like Dovecot, Postfix to listen on LOCALHOST (127.0.0.1) if not needed over Internet Enable ONLY encrypted AUTH (Login) to Postfix! (TLS 1.2) Disable unneeded Services ! like Samba, FTP… move config from /etc/logrotate.d/ufw […]

Impressum Datenschutz-DSGVO-GDPR

www.linuxonlinehelp.eu - Linux PC & Server Support since 2004 Tags: Linux Online Help, Linuxonlinehelp, Linux Support, Linux Hilfe