Install CVS files:
sudo apt-get install cvs
Install the CVS server:
sudo apt-get install cvsd
When prompted in the cvsd installation process for Repository, type in “/cvsrepo”.
Now that the cvsd installation in complete goto /var/lib/cvsd
or seeking for a change(or if there is a new version of cvs updated):
sudo cvsd-buildroot /var/lib/cvsd
If the folder cvsrepo does not exist, then create it ..
sudo mkdir cvsrepo
sudo chown -R cvsd:cvsd cvsrepo
and then initilize the repository
sudo cvs -d /var/lib/cvsd/cvsrepo init
create a user and password
sudo cvsd-passwd /var/lib/cvsd/cvsrepo +username
sudo vi //var/lib/cvsd/cvsrepo/CVSROOT/config
Change “SystemAuto=no”
Test
cvs -d :pserver:username@localhost:/cvsrepo login
cvs -d :pserver:username@localhost:/cvsrepo checkout .
Nmap is a utility for network exploration or security auditing. It supports ping scanning (determine which hosts are up), many port scanning techniques, version detection (determine service protocols and application versions listening behind ports), and TCP/IP fingerprinting (remote host OS or device identification). Nmap also offers flexible target and port specification, decoy/stealth scanning, sunRPC scanning, and more. Most Unix and Windows platforms are supported in both GUI and commandline modes. Several popular handheld devices are also supported, including the Sharp Zaurus and the iPAQ.
open a terminal and enter:
apt-get install nmap
how to use nmap:
sudo nmap domainname (or IP address) is the most simple syntax to scan the open ports on the remote system. The other switches are used for more selective scans.
Command Line
How to use it
Nmap has lots of options, so we are going to focus on only some of them.
sudo nmap -sS -O 127.0.0.1
-sS
TCP SYN scan
-O
Enable Operating System detection
sudo nmap -sU 127.0.0.1
-sU
UDP ports scan
sudo nmap -sS -O -p 20-25 127.0.0.1
-sS
TCP SYN scan
-p 20-25
Scan on ports 20 to 25
sudo nmap -sS -F 127.0.0.1
-sS
TCP SYN scan
-F
Fast (limited port) scan
you can check the long nmap man page