How do you block someone from your network?

Needs more info. Internal? External? Someone in your house or are you paranoid about some other garbage?

The real question is why they're on your network to begin with if they're an unwanted entity.
 
intrusion

hi beers,
great to see you

internal.
roomate.

a roomate is not an unwanted entity -- it is just something that happens by chance.

one of these things is happening:
1. the roomate has intentionally caused this intrusion to happen
2. the roomate has accidently caused this intrusion to happen [is this even possible?]:confused:
3. an external intruder is using the roomates computer to make the intrusion

White Hat
 
If its your roommate then put a password on your computer. Does your roommate have his own computer that is attached to your network? Disable file sharing on your pc as well.
 
Are you trying to block your roommate from your network, or the person behind this intrusion? If you want to block your roommate, why don't you just tell him to disconnect from your network until he fixes his security issue? If you block him, he'll probably just start messing with the hardware trying to fix it.
 
block

hackapelite,
glad you made it

what do you mean "what kind of network"?
what "kinds" of networks are there?

johnb35,
awesome. cool, your here

i did, i had a password on the original admins computer AND on the router.
the roommate has their own computer that is attached to our network.

johnb35 quote
"Disable file sharing":

when i clicked on the "homegroup" section [w7], this is the message that i got
"there are no other people in the homegroup"

is there another place in w7 where the "Disable file sharing" is located?
and if so, where is it located [in w7 (new user of w7)] so that i CAN "Disable file sharing"?

hi Geoff,
it nice meeting you
so your an outdoorsmen, huh [your avatar picture]? that's cool. i like doing adventurous outdoor activities too.

1. in your opinion, do you think that its possible that if a person [roomate on the same network] was having trouble with their hardware and wanted to try to get on the network, that they could have just been "tinkering" around and accidently stole the admin rights?
2. yes i am trying to block the roomate [or third party controling their computer]
3. we did tell them to disconnect from the network, but they feel like it is taking too long to fix [as yet, i still do not "know" HOW to complete this task] and have since resumed network access.
4. the landlord looked on the roomate [suspects] computer and found an admin folder full of files. and on the orignal admin rights computer, the admin folder is now empty of files. the roomate deleted the admin folder in front of the landlord [not especially good at IT], but since then, the roomate simply could have "restored" the deleted folder from the recycle bin as soon as the landlord left.
5. is there a way to allow the roomate to have internet connection [access to the internet], but to be able to block them at the same time so that they don't have admin rights or the ability to access any of the other computers and all of their data on their computers at the same time?
6. since the roomate [suspect] was spotted as being the culprit to this intrusion, the "name" has changed, but still they have admin rights [stolen] AND complete access to the network and all of the computers and data on it [along with anything else that admin rights can give a person]
7. the landlord is NOT "able" to even run security programs on their computer because they now lack the admin rights [which has been stolen by the roomate's computer], nor can the original admins computer for the network [landlord] ever install any new programs until it is fixed.
8. until this issue is fixed, this is a serious security risk/breach
9. at the moment, i am trying to figure out how to block the roomate from the network, to figure out how to regain the admin rights, and HOW to set up a new network from scratch [which i have never done before and need to know how to complete this before i can further proceed in this matter -- assuming i figure out how to regain the admin rights]. However, the first step in the process is to block the roomate from the network:confused:

White Hat
 
what do you mean "what kind of network"?
what "kinds" of networks are there?
How's your network set up. Do you have a wifi router? Just a wired ADSL modem? Wired switch? Do you live in an apartment/dorm where you just have an ethernet port on the wall? How do your roommate access your network?

Lot of the answers to your questions depend on how your network is actually set up.

1. in your opinion, do you think that its possible that if a person [roomate on the same network] was having trouble with their hardware and wanted to try to get on the network, that they could have just been "tinkering" around and accidently stole the admin rights?
No.
 
1. in your opinion, do you think that its possible that if a person [roomate on the same network] was having trouble with their hardware and wanted to try to get on the network, that they could have just been "tinkering" around and accidently stole the admin rights?
If your roommate was already on your network, I'm not sure what you mean by they were having trouble and tinkered to get on the network. In either case, tinkering around on their machine won't give them admin rights, they likely already have admin rights on their machine.

2. yes i am trying to block the roomate [or third party controling their computer]
Having multiple roommates in the past, I don't see how you could simply block your roommate from your network and have that person be okay with that. If they are causing harm to your devices, I'd look at implementing better network security, or even share an internet connection but have multiple LANs for yourself and him.

3. we did tell them to disconnect from the network, but they feel like it is taking too long to fix [as yet, i still do not "know" HOW to complete this task] and have since resumed network access.
This sounds more like a tenant than a roommate, why are you required to fix his computer? If he has an infection on his computer and it causes issues on your network, tell him to bring it someplace to fix it or have him search for a fix. It's likely not that hard to fix.

4. the landlord looked on the roomate [suspects] computer and found an admin folder full of files. and on the orignal admin rights computer, the admin folder is now empty of files. the roomate deleted the admin folder in front of the landlord [not especially good at IT], but since then, the roomate simply could have "restored" the deleted folder from the recycle bin as soon as the landlord left.
Kick this roommate out.

5. is there a way to allow the roomate to have internet connection [access to the internet], but to be able to block them at the same time so that they don't have admin rights or the ability to access any of the other computers and all of their data on their computers at the same time?
There are several ways to accomplish this. The easiest would be to see if your wireless router has a guest network mode, which creates a separate wireless network with only internet access and no access to your LAN. If not, you could look at implementing routing policies or VLANs.

6. since the roomate [suspect] was spotted as being the culprit to this intrusion, the "name" has changed, but still they have admin rights [stolen] AND complete access to the network and all of the computers and data on it [along with anything else that admin rights can give a person]
Did he change settings on your network or your computer? If your network, once you have access change all your passwords and enable login over HTTPS.

7. the landlord is NOT "able" to even run security programs on their computer because they now lack the admin rights [which has been stolen by the roomate's computer], nor can the original admins computer for the network [landlord] ever install any new programs until it is fixed.
Seems like you or the landlord should be having a talk with this roommate. It's not like it's a hacker across the globe, if he's causing problems to the landlord he should just revoke access completely from the user or kick them out. It's a human problem.

9. at the moment, i am trying to figure out how to block the roomate from the network, to figure out how to regain the admin rights, and HOW to set up a new network from scratch [which i have never done before and need to know how to complete this before i can further proceed in this matter -- assuming i figure out how to regain the admin rights]. However, the first step in the process is to block the roomate from the network:confused:
Is he connected via wireless? If so, change make sure you are using WPA2 security and set a long and complex network passcode.
 
hackapelite,
hows your day?

it is a wired/cable system.
house

Geoff,
nice to hear from you

"If your roommate was already on your network, I'm not sure what you mean by they were having trouble and tinkered to get on the network. In either case, tinkering around on their machine won't give them admin rights, they likely already have admin rights on their machine."

i have not personally examined the roomates computer, but there may be viruses. in the past, there has been viruses on this persons computer, which were dealt with in the past, and cleaned up. the roomate said that they were having new problems with their computer. the person does not have respect for me, and does not treat me good (very mean), so i am not going to fix this persons computer; they are going to have to take it elsewhere. however, since the computer has not been rendered "inoperable", this mean person will NOT do "anything" about this problem (unless the problem is the roomate themself).

the tenet is NOT supposed to be the administrator of the network, as the landlord is the administrator of the network. however, now i am not completely sure about what is going on, as the landlord's computer still says that it is the administrator, yet the tenet has an "admin" folder on their computer [which the landlord saw. i did not].

"If they are causing harm to your devices": it has not been PROVEN that they have caused any harm -- other than strange things having occurred.

"I'd look at implementing better network security": how do you do this?

"share an internet connection but have multiple LANs for yourself and him": LAN means that each person has their own cable coming out of the wall? [but i don't understand how to do this, as ALL cables are connected to the same system.....

tenant: they pay toward the internet, so we are obligated to provide this -- it hasnt been PROVEN that any problems have occurred [though "strange" things have happened, as well as identity theft 1 year again, traced back to a foreign country somewhere for about $100, but i do not know if she is responsible, though she has threatened to do identity theft to the landlord months ago. the landlord is oblivious and sees no problems, even when it is obvious, so nothing can be done there]

"why are you required to fix his computer?": this person does ALL manner of "convincing" upon a person's mind, including buying the landlord food and giving penny sized gifts and cupons, so their mind is effected by any problems that are happening, except now that it is unusually strange that this persons name (+1 other entry, 1 at a time, 1 hour after tenet informed, name changed) on the network. they throw temper tantrums and cry with emotional fake tears, so people end up becoming this persons "servant" while they sit in the chair [throne] all day long. the tenets argument is that they pay toward internet, so their computer must be fixed/issue resolved [even if it is there fault/problem].

"causes issues on your network": that's just it, it hasn't caused any problems, just strange things, like names appearing on the landlords admin computer network section and the landlord not being able to run security programs now [since this happened] because of a "lack of admin rights", even though under user account it says that the landlord is still the administrator.

"Kick this roommate out.": legal technicalities, due to "reason" being good enough to substantiate this claim in a legal process.

"Did he change settings on your network or your computer? If your network, once you have access change all your passwords and enable login over HTTPS."
i dont know how the tenet did it. unless it was one time when the door was unlocked to the room, the tenet did not do this on the landlords computer. as far as i know, the landlord "still" has ACCESS to the network.
if i change all of the passwords, what about the tenet, as you said, and i quote: "I don't see how you could simply block your roommate from your network and have that person be okay with that."
what do you mean "enable login over HTTPS."?: how do you do this?

"a guest network mode": thanks Geoff, i'll have to look into that...
okay, my router DOES have this option [have to research later].
is “implementing routing policies or VLANs.” very difficult?

“Seems like you or the landlord should be having a talk with this roommate“: the landlord has talked to them. it is a problem [in general]. the tenet is putting it on me that it is “my problem” (since i am the computer person in the house), and so, therefore, i am the one that has to resolve this issue. and the landlord is making it my problem (because i am security) and so i am required to fix this problem somehow. so even though it is the tenets problem, and the landlords problem, i am the one that now has a problem.

“f he's causing problems”: hasn’t been proven. just strange things happened:confused:

“Is he connected via wireless?” yes. however, i don’t see as HOW changing the password can help, as then as you say, “ I don't see how you could simply block your roommate from your network and have that person be okay with that” however, this option does sound VERY tantalizing.

i will go with WPA2

Security
 
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