Espacio Mixto

So...  I don't own a moustache or a beard so far... but I collaborate at work letting a guy take me a picture with a fake moustache  to support  and help spread the word about what this is. Seems not enough people gets the idea yet but here we are, trying to let other guys know what is it about and to take care of themselves. They "encourage" us offering a cup, probably to let us remember the rest of the year that "Movember" it's not just one month and we should visit the doctor just as precaution. It's a very good idea, simple and fun, until next "Movember".

This is a handy way to get a lot of info about the switch/port an interface is connected to. CDP stands for  Cisco Discovery Protocol , which is a layer 2 protocol and is used to share information about other directly connected Cisco equipment (WikiPedia). ## ether[20:2] == 0x2000 - Capture only packets that are starting at byte 20, and have a 2 byte value of hex 2000 LLDP stands for  Link Layer Discovery Protocol  and replaces CDP. LLDP is a vendor-neutral Data Link Layer protocol used by network devices for advertising of their identity, capabilities and neighbours (WikiPedia). ##tcpdump -i eth0 -s 1500 -XX -c 1 'ether proto 0x88cc' The folllowing command shows how to use tcpdump if you ever need switch/port info on a linux host assuming you are connected to a Cisco device: tcpdump -nn -vv -i   -s 1500 -c 1 '(ether[12:2]=0x88cc or ether[20:2]=0x2000)' Example: root@arrakis:~ # tcpdump -nn -vv -i eth0 -s 1500 -c 1 '(ether[1...

MOVEMBER So again we start November and "Movember" arrived too. Here's a little video that explains better what is it about.