02 Sep 09 Security Consultant – Basic NMAP Usage

nmap is one of the most useful tools for a security consultant in a penetration testing environment. It has a massive range of options, and only the most basic will be considered in this tutorial.

It goes without saying, that nmap should only be run against IPs and ports that you yourself have gained authorization to test. Here goes:
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Tags: daemon, ethernet, firewall, frame, ftp, header, ids, IP, mangle, nmap, paket, pen test, pen testing, penetration testing, POP3, port, security, Security Consultant, security consulting, socket, tcp, timing, udp

15 Sep 08 Quick Linux and Windows OpenVPN HOWTO and tutorial, including VPN routing

OpenVPN is a popular Windows/Linux VPN Server/Client pair. I think there’s a separate GUI available for it if you’re so minded. This howto will cover command line usage only.

I’ll provide example configuration based on a Linux server and a Windows client, however the same applies pretty easily if you wanted to mix and match.

On debian, apt-get install openvpn. On any other linux distro, use your own package manager or alternatively download from source and compile.
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Tags: 10.8.0.1, 10.8.0.2, apt-get, client, compile, compression, daemon, daemonize, debian, default gateway, distro, established, forward, generate, interface, IP address, iptables, ip_forward, keepalive, Linux, linux server, masquerade, nat, openvpn, package manager, ping, related, remote, route, route add, route delete, route print, routing, secret key, server, source, tap, tcp, tcpdump, traffic, tun, udp, VPN, vpn client, vpn server, windows, windows client