Basic Network Commands Over Linux platfrom.. By: Nadine Shorbaji Hanan Nimer

2. My Connection

3. Network Configuration..

5. $ smbtree

6. Think about it for a second !!!!
Why single physical interface
should be limited to single IP
address??

7. ifconfig eth0 <ip> netmask 10.248.255.0 up
sudo route add default gw 10.1.1.2

8. Test Connection..
user@computer-name:~$ ping www.google.com
PING www.l.google.com (66.102.13.106) 56(84) bytes of data.

9. DNS Tools..

10. host:used to map names to IP add.
$ host www.google.com
www.google.com is an alias for www.l.google.com.
www.l.google.com has address 66.102.13.104

11. nslookup
nslookup 66.102.13.103

12. $ whois 66.102.13.103

13. How many hops until some destination?
$ traceroute www.amazoon.com

14. Netstat :
List listening sockets ,
associated port#
and process.
netstat -l -p -n
netstat --tcp
netstat --udp
netstat -i
netstat -s

15. ethtool:
What driver is responsible for
certain network interface
$ ethtool -i <interface>
$ ethtool <interface>

16. finger: to contact the necessary
server and retrieve info. about user.
finger Email || username

17. Arp - Route
List ARP table (MAC-IP)
$ arp
Show routing information
$ route -v

18. Security Tools

19. FireWall..
sudo ufw enable
disable

20. Nmap:
sudo nmap 192.168.1.1-255
nmap localhost

21. Netcat : The network Swiss
army knife
$ nc -v -w1 localhost -z From-ToPort

22. tcpdump : a packet sniffer
$ tcpdump -i eth0

23. $ tcpdump -w file -i eth0 Capture packets > file
$ tcpdump -tttt -r file Read sniffing data
$ tcpdump -n -i eth0 Capture packets with IPs
$ tcpdump -i eth0 arp packets of protocol type
$ tcpdump -i eth0 port 22
from particular port

24. Browsers from Terminal!!
lynx www.google.com
lynx www.facebook.com

25. wget www.google.com

26. Talk (MultiUser)
talk
wall
write

27. Telnet vs SSH

29. Telnet
sudo apt-get install telnetd
$ ufw allow 23
$ telnet localhost
Just try to ping it.. then telnet it

30. SSH
Secure Shell, a network protocol for remote
administration of Unix computers
$ sudo apt-get install openssh-server
$ ufw allow 22
$ nmap localhost
$ ssh user@pc-name

31. PuTTY
An open source telnet and SSH Client
for Windows ..

32. Send messages between 2
Ubuntu PCs
ssh <user name>@<ip address>
export DISPLAY=:0.0
notify-send "Title” "message text"

33. References:
1.http://www.alexonlinux.com/useful-linux-networking-commands
2.http://www.alexonlinux.com/tcpdump-for-dummies
3.http://www.karakas-online.de/gnu-linux-tools-summary/network
-commands.html
4.http://www.linuxplanet.com/linuxplanet/tutorials/7044/1/
5.http://aalagha.com/blog/2008/01/22/netcat-swiss-army-knife
6.http://www.dd-wrt.com/wiki/index.php/SSH
7.http://www.slideshare.net/tmavroidis/linuxnetworkingcommands
8. http://sectools.org/
9.http://askubuntu.com/questions/31582/send-messages-between
-2-ubuntu-pcs-net-send-style
10.http://ubuntuforums.org/showthread.php?t=100198
11.http://linux.about.com/od/commands/l/blcmdl1_talk.htm
12.http://forum.codecall.net/linux-networking/index3.html