Sending messages to other/unknown workgroup computers

[mrprimo55]

hey everyone.
ive got what i think is a pretty interesting question here. i have a linksys wireless router which does not have the generic linksys ssid, but it is unsecured. i am planning to secure it but i am not ready yet as i am still tweaking some other things with the router and my computers. anyways, i have a neighbor who keeps logging onto my router, even after i check the dhcp log and delete them. they just reconnect a little while later after ive kicked them off. my question is this: i would like to send them a friendly message but i cannot figure out how to. i am familiar with the basics of netsend but as far as i know, to use netsend the computer has to be in the same workgroup. is this correct? if so, is there a way that i can find their workgroup or even send them a message without sending them a message? lastly, if they have netsend disabled on their computer is there a way that i can send a message by another means? i know that this is a pretty interesting question, but i would just like to be able to send them a message, nothing harsh, before securing my network so i would greatly appreciate any help. thanks in advance.
note: i posted this message in two forums on techspot because i wasnt sure of the right one to use.

 

[Spike]

to use netsend the computer has to be in the same workgroup.

No, but both computers must have the messenger service enabled.

You're solution is to secure your network - either by encryption or by allowing only your own mac addresses - possibly both.

Being a neighbor, you could also drop a note through their door

 

[mrprimo55]

haha thanks, but i dont know which of my neighbors it is. is there any way to figure out what their workgroup is though?

 

[Samstoned]

log should have ip address just ban that
disable dhcp make router a gateway set you nics to static assign address's
like default router gateway 172.16.1.1
you nics 172.16.1.10 and up
make a note of your wan dns ip's there should be 2 of them
or use this default it works sometimes
4.2.2.2-4.2.2.6
don't have WEP setup need a better wireless

 

[mrprimo55]

don't have WEP setup need a better wireless

what do you mean by this?

 

[Spike]

WPA

Plus of course MAC filtering.

 

[Didou]

WEP is easier to setup & works fine unless your neighbour works for the NSA.

 

[Spike]

he he. Or unless you're neighbor is me (or someone of equal knowledge), but that's not likely. lol

Not that I'm some kind of super-guru, but most people aren't "technically inclined". lol