Security
Opencanary
I love honeypots and wanted to give opencanary a shot cause I kept hearing how cool it was. It’s written in python, and very easy to configure and extend. The idea is to stick these in various places in your Read more…
Security
DNS and ICMP Tunneling
Getting around protections with tunnels is very easy, but there are things you can do to detect and prevent them. A few are outlined at the bottom of this post. DNS Tunneling: First you need to set up DNS. Create Read more…
Linux
Bro 2.5.1 and ELK
Software versions: Bro 2.5.1 – on Debian 8.9 bro server Logstash 2.2.4 on Debian 8.9 bro server Elasticsearch 2.4.6 on Debian 8.9 ELK server Kibana 4.3.0.9369 on Debian 8.9 ELK server First install Java on both systems: sudo add-apt-repository -y Read more…
Linux
Awesome .htaccess
This .htaccess blocks bots, search engine index, wget, curl, and access to itself. Enable via /etc/apache2/sites-available/whateversite.conf. <Directory “/var/www/html/whateversite”> AllowOverride All </Directory> .htaccess file. <Files .htaccess> deny from all </Files> RewriteEngine on RewriteBase / RewriteCond %{HTTP_USER_AGENT} AhrefsBot [OR] RewriteCond %{HTTP_USER_AGENT} Read more…
Networking
Defeating MITM
There are a number of things needed to stop ARP poisoning properly in a Cisco environment. DHCP snooping Trusted ports Dynamic ARP inspection A filter for static IPs DHCP snooping prevents rogue DHCP servers and is the groundwork for all Read more…
Security
Optionsbleed – mod_security
It’s easy to stop Optionsbleed with mod_security, unless you need HTTP OPTIONS on your web server. If you’re using CRS, you can uncomment rule number 900200 in crs-setup.conf. The idea here is to only allow what needs to be allowed, Read more…
Programming
Malware Challenge
This challenge has two phases. The first one involves creative thinking and research. The second one is live malware and reversing. Instructions and hints are built in. Rules and things you’ll need: 1. You need an isolated environment with a Read more…
Linux
DNS over HTTPS
Google and others have been working on implementing DNS over HTTPS. https://tools.ietf.org/id/draft-hoffman-dns-over-https-00.html This allows bypass of things like RPZ, DNS blackholes, and other protections. All the more reason to start thinking about SSL inspection. The right to privacy is understandable, Read more…
Security
Struts CVEs 2017
Struts vulnerable ISOs. https://pentesterlab.com/exercises/s2-045 https://struts.apache.org/docs/s2-045.html – CVE-2017-5638 https://pentesterlab.com/exercises/s2-052 https://struts.apache.org/docs/s2-052.html – CVE-2017-9805 Pentesterlab has over 20 free labs where you can learn some techniques used for some pretty big vulns that happened over the past few years. Pro version is 20 Read more…
Security
MISP, Bro and RPZ
MISP is free and it’s one of the best threat sharing platforms I could find. The beauty of MISP is how easy it is to integrate with tools like bro, Snort, and RPZ. You can do API calls and pull Read more…