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kArp – Linux Kernel Level ARP Hijacking/Spoofing Utility

Introduction kArp is a linux patch that allows one to implement ARP hijacking in the kernel, but control it easily via userland. You may configure, enable and disable kArp via ProcFS or the sysctl mechanism. kArp is implemented almost on the device driver level. Any ethernet driver (including 802.11 drivers) is supported. The kArp code […]

Topic: Hacking Tools, Linux Hacking

Measuring up the Security Risks for Mac – Are Apple Prepared?

The fact is Windows is getting ripped apart with viruses, spamware, spyware, zombie clients, trojans worms and whatever else you can think of. Mac and Linux aren’t (at the moment), there are already Bluetooth viruses, so why not Linux and Mac.. Some may say it’s because they are inherently more secure, the architecture and user […]

Topic: Apple, Linux Hacking

SSL VPNs and OpenVPN – Part IV

4. Brief How-to …. Creating Multiple clients to Single site tunnels. Example of using PKI to create a client-to-site VPN: For a road warrior or roaming/multiple user scenario, static keys based VPNs don’t scale well. You will need to implement a PKI if you have Hub and Spoke architecture of VPN. From the OpenVPN.net website: […]

Topic: Linux Hacking, Networking Hacking, Security Software

SSL VPNs and OpenVPN – Part III

3. Brief How-to ….. OpenVPN and Site-to-Site Tunnels. OpenVPN can be implemented either Site-to-site or client-server model. I will take example configurations of both models. If you want to implement site-to-site configuration, the best way is to use static-keys instead of PKI. Using static keys, you can have your VPN tunnel up and running in […]

Topic: Linux Hacking, Networking Hacking, Security Software

SSL VPNs and OpenVPN – Part II

2. Why OpenVPN Here, in this article, I will lay down the emphasis on one important Open-Source SSL VPN software written by James Yonan and contributed by several others, which proposes security without the inherent complexity of IPsec AND using a trusted design of client component and VPN server. Usually VPNs require end points which […]

Topic: Linux Hacking, Networking Hacking, Security Software

SSL VPNs and Using OpenVPN

Requirement: To connect to a VPN server in a different country. Situation: A country which has proxies at every gateway. Issues: VPN based on IPSec is fussy when it comes across networks which are NAT’ted/ proxied. The Security Parameters Indexes don’t match and clients do not get connected. Objective: To connect VPN server in a […]

Topic: Linux Hacking, Networking Hacking, Security Software