Small Linux distro without GUI to test network connectivity

I’m looking for a small linux distro yet powerful to be used in my Virtual Box. The main purpose of this is just to perform basic network connectivity test. Hence, the following tools are very important:

tcpdump

nmap

I’ve googled and found a few related posts in different forums. Check it out.

Small linux vm to test network connectivity

Small Linux distro without GUI to test network connectivity

Currently, I’m working with Tiny Core Linux, trying to install it in Virtual Box VDI (Virtual Disk Image), but having some problem.

The only support that I can get is from this forum. Unfortunately, I can’t solve this issue yet.

http://forum.tinycorelinux.net/index.php/topic,15713.0.html

Since Damn Small Linux has more support, at least three different forums below, I’ll give it a try.

 http://www.linuxquestions.org/questions/damnsmalllinux-42/

http://damnsmalllinux.org/static/

http://www.damnsmalllinux.org/forums/

Hopefully, I’ll able to create a small linux in my Virtual Box with minimum RAM & Hard Disk space with lower CPU utilization, and without GUI. And also with a powerful tool such as tcpdump & nmap