12 Sep 09 What is my IP?

Your IP Address is: 38.107.191.104

Tags: IP, IP address, What is my IP

10 Sep 09 Security Consultant – Ports & Port Knocking

Port Knocking is a clever and interesting method of allowing remote firewall manipulation whilst leaving all ports closed to all IPs. When I attempt to initiate a TCP connection to a remote host I send a packet with a ‘SYN’ flag, indicating my intention, along with other information such as a source port, destination port, source IP and destination IP. The target machine has the option of responding by accepting, responding by rejecting, or simply ignoring the packet alltogether, known under iptables and most other firewalls as ACCEPT, REJECT or DROP.
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Tags: accept, connection, drop, firewall, IP, iptables, port, port knocking, protocol, reject, source ip, syn, target, tcp

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

26 May 08 Custom linux router, routing, split access and more..

So, now I have got this router set up and working, it was time to customize it somewhat.

In terms of networking, we have 3 10/100 ethernet ports and one wireless adapter, and this is set up as follows:

Internet comes in to eth1 and eth2, both of which have public IPs. eth0 which is another ethernet interface is bridged with ath0 which is my wireless interface (in master mode, with WPA-PSK/TKIP with hostap running) to form br-lan, whos IP is 192.168.100.1and is connected via a switch to feed the LAN PCs

I’m using a pretty simple netfilter masquerade script in use with this for NAT.
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Tags: bridge, ethernet, hostap, IP, load balance, multiple providers, router, split access, upnp, wireless, wpa