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IP Traffic Monitor already listening on eth0

If you get this “IP Traffic Monitor already listening on eth0” error when you are trying to use iptraf:

IP Traffic Monitor already listening on eth0

Or any other interface like eth1 or wlan0 and so on…

Be sure that you don’t have any iptraf applications running:

ps ax|grep iptraf

and after that you […]

Netdiscover finding IP-address when there is no DHCP server

Sometimes you have to get IP-address from the network and when there is DHCP server it’s pretty easy but sometimes when all devices have static IP-address and there is no DHCP server you might have a little problem to find out which IP-range they are using on this network.

There is one really nice and […]

Basics of NMAP basics

NMAP is probably best port scanner and network exploration/security auditing tool what you can find for free. So here is some really basic things how to use it.

There is many ways to scan with nmap:

Using wildcard mask: nmap 192.168.0.* Scan’s 192.168.0.0 – 192.168.0.255

With range: nmap 192.168.0.1-100 Scan’s 192.168.0.1 – 192.168.0.100

Using notation: […]

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