On 2015-09-14 20:51, Daniel Bauer wrote:
Hello,
As my internet sometimes is very slow I opened 192.168.1.1 (with that movistar/Spain specific page)
The local or the remote? Fibre or ADSL?
that showed me that besides of my eth0-wired computer there are 4 other WLAN-IPs, although I, for the moment, do not have switched on any wireless device.
WLAN or VLAN?
Is there a more or less simple way to find out if there are others using my WLAN - even for somebody who has not the slightest idea of how networks work?
Yes. Install "ntop", then start it "rcntop start", as root. Then point a browser to http://localhost:3000 After a while, you will be able to see everything that is sending or receiving traffic, and some information and what is that traffic, and perhaps what type of machines they are. If you have the IPs, you can find more about them with "nmap": Telcontar:~ # nmap 192.168.1.2 Starting Nmap 6.40 ( http://nmap.org ) at 2015-09-14 21:21 CEST Nmap scan report for moria.valinor (192.168.1.2) Host is up (0.0023s latency). Not shown: 994 closed ports PORT STATE SERVICE 21/tcp open ftp 22/tcp open ssh 23/tcp open telnet 80/tcp open http 10001/tcp open scp-config 12000/tcp open cce4x MAC Address: 00:01:02:03:04:05 (3com) Nmap done: 1 IP address (1 host up) scanned in 1.48 seconds Telcontar:~ # -- Cheers / Saludos, Carlos E. R. (from 13.1 x86_64 "Bottle" at Telcontar)