Hypothetically speaking: How can I frustrate and annoy my company network?

1. Install my own DHCP server onto the network – just get it off before someone locates it…such as 1 hour.

2. Bring in a virus(es) behind our system firewall.

What else can I do guys?

 

1a) Make sure to set your DHCP server as authoritative for extra fun. That way it will NACK everyone else's leases

3. use something like dsniff to flood it with all kinds of random frame from random MAC addresses.

4. Create a loop that the spanning tree can see. Depending o the switch config, you may just cut off everyone on your switch , or maybe just yourself.

5. ping -f

6. annoy them with nmap xmas tree scans.
5.

 

ok, what does ping -f do? I was about to try it till I realized this was a thread on how to mess up a network.

 

Create a bridge loop that spanning tree can't see ;-)

 

`ping -f` is basically "send out as many packets as fast as possible, and don't care if we get anything back. -f = --flood

 

It forces packet framentation - which means lots of little garbage.....

 

this thread is teh awesomeness!!!

 

I used to have dsniff on a linux server but I can't carry that in....Is there a windows version?

 

I don't know what this means....bridge from where to where? what medium? Just between two network ports? How would you keep the spanning tree from seeing this?

 

WTF? `ping --help` FTW

 

You've heard of live CD's, haven't you?

 

You do it between two non-spanning tree aware switches. The ARP traffic starts building and compounding. Then eventually, there's nothing but ARP traffic.

 

Connect an older Cisco switch to your switchport, disable cdp so it can't be found quickly. Install DHCP server late Friday night so that when everyone comes in Monday morning will be hectic. Take Monday off, but around 10 - swing by and grab your server...

 

OIC, run local linux off a live CD. I've never done it but I'm sure I could.

hmmm...how to get between two switches....could I install my own? I don't think I can do this one so easily...I'll have to think this one through.

 

Knoppix, search it up.
That should work, But in that case you'll need three switches... The drop goes in to one, that one feeds the second two which are also connected to each other.