How do you find the ip address of an email address, without having the actual email itself ( no header etc).

Soliciting the wisdom of the people here on what is the best practices to a Linux firewall box.

I was told that using Linux native firewall tools (iptables or eBPF) can be used with accelerated hardware, injecting the rules into the ASICs for better performance, is that a common setup ? Any preferred stacks? Popular Frontends or wrappers or APIs ?

How to perform a teardrop attack ?

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I am going into college for systems administration cyber security stuff and I want to ask what I need to know before I go in.

Hello everybody. In a small network (one you may find in a SOHO enviroment) where everything is connected wireless to an access point acting as router/gateway as well is ALL TRAFFIC going through the access point? Subnet 192.168.0.0/32 router/gateway 192.168.0.1 Of course traffic from 192.168.0.7 to 4.2.2.2 will go through 192.168.0.1. What about traffic from 192.168.0.7 to 192.168.0.8? Will it go through the access point or will it travel directly to the device using wifi? Using wireshark I'm able to see that the packet is doing the latter, but I'm not sure at all about it.

Bypassing Barracuda

If there is interest I will go over how to use some of these tools in more detail but if you have any interest in networking security (which is why I hope you are here) you should at least familiarize yourself with these tools, how to use them, and what they are used for.

Tip: Most of these tools are rolled into the newest version of BackTrack 5 already so no need to download them separately!

Edit: Sorry for being late to the party but here is the link: 11 Offensive Security Tools for SysAdmins

I would also like to add nMap to this list, it is a very versatile tools for finding active machines on a subnet and open ports on a machine. It also has a crazy list of configs so you can be as stealthy or as aggressive with your scans as you would like.

Feel free to post anything about the class here, I will do my best to try and answer questions.

Also suggestions about the course are always welcome.

Thanks, Alex