Computer/network guy in Carroll Co.

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  • Sirex

    Powered by natural gas
    Oct 30, 2010
    10,380
    Westminster, MD
    I may try that. If it doesn't work, it may have some 7.62mm holes thru it. I have a suspicion who wouuld be in range and have the knowledge to fvck with my stuff.
     

    Sirex

    Powered by natural gas
    Oct 30, 2010
    10,380
    Westminster, MD
    UPDATE;

    Okay, so I had been trying to log into the Belkin router from a bad computer. I hooked my netbook directly to the router to access it. Using the DHCP list, I did find an unauthorized device on our network. I double checked by turning on and off devices to make sure nothing was cloned. Then I turned on MAC filtering for our confirmed devices. After doing so, I restarted the router and confirmed only our allowed devices were on.

    Question, can somehow find out what kind of device something is by looking up a MAC address? Trying to confirm who I think "may" have attempted this. Fortunately we did not do any online transactions since discovering the intrusion on Sunday, but I have no idea how much acces they can gain to our computers or phones by getting onto the network.
     

    lilmike1464

    Active Member
    Oct 12, 2013
    233
    Baltimore City, MD
    UPDATE;

    Okay, so I had been trying to log into the Belkin router from a bad computer. I hooked my netbook directly to the router to access it. Using the DHCP list, I did find an unauthorized device on our network. I double checked by turning on and off devices to make sure nothing was cloned. Then I turned on MAC filtering for our confirmed devices. After doing so, I restarted the router and confirmed only our allowed devices were on.

    Question, can somehow find out what kind of device something is by looking up a MAC address? Trying to confirm who I think "may" have attempted this. Fortunately we did not do any online transactions since discovering the intrusion on Sunday, but I have no idea how much acces they can gain to our computers or phones by getting onto the network.

    http://hwaddress.com
     

    whitelightning777

    Active Member
    May 20, 2013
    181
    Invest in a a UPS (battery backup) for your router and modem. That'll prevent them from forgetting your settings or even worse resetting to open with no security at all. You'd be amazed at how many issues go away once a battery backup is used.

    Obviously, a modestly sized unit will be fine.
     

    Sirex

    Powered by natural gas
    Oct 30, 2010
    10,380
    Westminster, MD
    So, I have evidently only gotten 4 of our 5 devices back on the network. My wife's net book still won't get on. I put it's MAC address in the MAC filtering. It was set to auto obtain an address from the router. However, it said it was connected but with limited connection, and still can't get on the web. I checked it's IP for the wireless and it comes up as like 169.210.x.x or something, as it did when it was the only device able to access the internet before I reset it. I reset her wireless IP to our scheme, 192.168.x.x, and it says it connects, but can't access the internet. This is weird. When I get home from work I will mess with it more. The intruder's MAC Address is 1C:C1:DE:4F:7C:4L , so if anyone can tell me the kind of device it is, that would be super awesome.
     

    t84a

    USCG Master
    MDS Supporter
    Jan 15, 2013
    7,733
    West Ocean City, MD
    So, I have evidently only gotten 4 of our 5 devices back on the network. My wife's net book still won't get on. I put it's MAC address in the MAC filtering. It was set to auto obtain an address from the router. However, it said it was connected but with limited connection, and still can't get on the web. I checked it's IP for the wireless and it comes up as like 169.210.x.x or something, as it did when it was the only device able to access the internet before I reset it. I reset her wireless IP to our scheme, 192.168.x.x, and it says it connects, but can't access the internet. This is weird. When I get home from work I will mess with it more. The intruder's MAC Address is 1C:C1:DE:4F:7C:4L , so if anyone can tell me the kind of device it is, that would be super awesome.

    1C:C1: DE is a HP. Is your wife's netbook a HP?. I really don't think you need to use MAC filtering but that's just me.

    http://aruljohn.com/mac.pl
     

    lilmike1464

    Active Member
    Oct 12, 2013
    233
    Baltimore City, MD
    1C:C1: DE is a HP. Is your wife's netbook a HP?. I really don't think you need to use MAC filtering but that's just me.

    http://aruljohn.com/mac.pl

    I second this. It just creates a lot of work for connecting future devices. Plus, if you don't have WPA on, someone can just spoof your MAC address and connect to your router.

    From the device that can't get an IP address, enter all the ip info from another device (netmask, gateway, DNS) except the actual IP address. Just check the router for addresses that are used and use the next one available.

    Then run cmd and try to ping the gateway address (192.168.1.1 most of the time). Post the results
     

    eddiek2000

    Sweet Lemonade!!
    Feb 11, 2008
    5,773
    Southern Maryland - Chuck Co.
    Mac filtering and disabling SSID Broadcasting are way old school and unnecessary. Anyone can find your network when it is in use and detect your mac address(es). Spoofing Mac addys is available in ALL modern operating systems. The key is a strong WPA2 PSK. I think there was an article where once you get over 12(or 20) characters (not sure, but I'll try to confirm), it is a strong password.

    ***EDIT*** Also need to change password of the wireless router/AP admin account.
     

    dweaver

    Member
    Jun 8, 2013
    66
    Washington Co. MD
    I know it sounds ridiculous but the modem is hooked up to the WAN port not one of the LAN ports right? It seems silly but I've seen it many Times, the switch will pass the Ip to one device on the network(hence your one pc that is working). Otherwise, if it's connected properly, I'd have to suggest a factory reset as well; that's usually the quickest way out...
     

    awptickes

    Member
    Jun 26, 2011
    1,516
    N. Of Perryville
    Sounds like you just need to completely reconfigure your router. Start from factory defaults and get it working.

    If you're uncomfortable doing it, I am a small business owner. :D
     

    lilmike1464

    Active Member
    Oct 12, 2013
    233
    Baltimore City, MD
    I am the network installation manager for an WISP in Baltimore City. I design, configure, and install almost everything that goes on our network. I also troubleshoot everything, too. If you can't get the pc working (but everything else is), just PM me and I will send you my number and help you for no cost. I'm working on a project for the MPA right now, so I don't have much free time, but I will make some time if you really need help. From one shooter to another lol
     

    Sirex

    Powered by natural gas
    Oct 30, 2010
    10,380
    Westminster, MD
    I have tried resetting the wife's IP and subnet, and it connects to the network but not the internet. If I put it on auto obtain it always defaults to the other IP it was given, 169.214.x.x. I am out of my league here. On a side note, if someone has in fact hacked my network, is there a way to verify it was indeed hacked, find out who did it, and anything legally that could be done? I assume I am shi+ out of luck.
     

    t84a

    USCG Master
    MDS Supporter
    Jan 15, 2013
    7,733
    West Ocean City, MD
    Go to one of your neighbors or a Starbucks to see if she can connect outside your home. If its only one device (PC), its not the router.
     

    MDFF2008

    Ultimate Member
    Aug 12, 2008
    24,735
    Strong WPA2 password is all you need.

    One thing you can do is open up a command prompt as an admin and run these commands

    netsh int ip reset /resetlog.txt

    netsh winsock reset

    Sometimes the network protocals get messed up, that will reset them.

    You can also try running a virus scan just in case.

    Another trick you can do is to set a static IP and see if you can get online.

    http://www.howtogeek.com/howto/19249/

    It would look like (if your router uses a 192.168.2.x scheme, just switch the 1 and 2 below)

    IP 192.168.1.x (pick a random number between 100-254)

    Subnet Mask 255.255.255.0

    Gateway 192.168.1.1

    DNS 192.168.1.1

    Also, check to see that Internet explorer does not have a proxy set. You should not have one set.

    Open Internet Explorer by clicking the Start button Picture of the Start button, and then clicking Internet Explorer.

    Click the Tools button, and then click Internet Options.

    Click the Connections tab, and then click LAN settings.

    Select the Use a proxy server for your LAN check box.

    Sometimes running a good scan with combofix or adwcleaner will do the trick.

    If everything else fails, try manually specifying the link speed. I had a printer once that when I set link speed to auto, it always got 169.254 private IP's. Once I set the link speed manually, it worked fine)
     

    whitelightning777

    Active Member
    May 20, 2013
    181
    You might also consider getting a linksys router. Generally I've had the best luck with them. Try using ping from each device to the router to verify whether or not a physical link is possible. Of course your modem has to be stable as well. If the netbook has ethernet, try plugging that directly into the modem.

    If you get sick of XP, consider switching to linux mint. It's more user friendly then Windows, no joke. Use a new hard drive and pull documents and settings from XP. You do need to develop a solid foundation in computer skills, which isn't hard to do.

    A lot of cyber BS and stupidity vanishes when you use a friendly linux distro. Use kde as your desktop.
     

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