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Thread: Problems with ARP Spoofing =/

  1. #1
    Just burned his ISO
    Join Date
    May 2011
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    1

    Default Problems with ARP Spoofing =/

    Hello,

    I'm running Backtrack 5 on in an VM (VMware Workstation) and I am getting troubles when I try to do a arpspoof on our LAN Network (not an other VM).
    Doing this I'm getting this error:
    Code:
    arpspoof: couldn't arp for host 192.168.123.254
    The LAN Computer's Network Address is: 192.168.123.102

    Im doing to following things for ARP Spoofing:
    Code:
    cat /proc/sys/net/ipv4/ip_forward
    echo 1 > /proc/sys/net/ipv4/ip_forward
    cat /proc/sys/net/ipv4/ip_forward
    
    screen
    arpspoof -t 192.168.42.254 192.168.123.102
    CTRL+a S (Split)
    CTRL+a TAB (Jumping to next display region)
    CTRL+a C (Create the session in region)
    arpspoof -t 192.168.42.102 192.168.123.254
    The first one giving me an result, but the second one (arpspoof -t 192.168.123.102 192.168.42.254) gives the error I gave above.

    My ifconfig looks like this:
    Code:
    eth1      Link encap:Ethernet  HWaddr 00:0c:29:27:8d:30  
              inet addr:192.168.42.135  Bcast:192.168.42.255  Mask:255.255.255.0
              inet6 addr: fe80::20c:29ff:fe27:8d30/64 Scope:Link
              UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
              RX packets:1446 errors:0 dropped:0 overruns:0 frame:0
              TX packets:2823 errors:0 dropped:0 overruns:0 carrier:0
              collisions:0 txqueuelen:1000 
              RX bytes:89969 (89.9 KB)  TX bytes:148952 (148.9 KB)
              Interrupt:19 Base address:0x2024
    If anyone could help me, I would really apriciate that
    If any more information is needed, tell me

    Regards,
    Melvin Koopmans

  2. #2
    Junior Member
    Join Date
    Jun 2010
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    31

    Default Re: Problems with ARP Spoofing =/

    Just a guess (I am no expert lol) but I would try using bridged mode in VMware. Go to virtual machine settings, click on the network adapter, and the option is there.. Good luck I hope it works!

  3. #3
    Just burned his ISO
    Join Date
    Apr 2008
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    Default Re: Problems with ARP Spoofing =/

    i think you should run "arpspoof -t 192.168.42.102 192.168.123.254 eth1". correct me if i am wrong.

  4. #4
    Administrator sickness's Avatar
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    Default Re: Problems with ARP Spoofing =/

    Code:
    arpspoof -i eth1 -t 192.168.42.102 192.168.123.254
    Try this.
    Back|track giving machine guns to monkeys since 2007 !

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  5. #5
    Just burned his ISO
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    Default Re: Problems with ARP Spoofing =/

    i have the exact same problem. Would like to get an answer here

  6. #6
    Just burned his ISO
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    Default Re : Re: Problems with ARP Spoofing =/

    But vmware doesn't allow systems to use their interfaces in forensic mode to listen on network traffic, can anyone help us how to solve this prob, i'm using ettercap to sniff on LAN

  7. #7
    Good friend of the forums gunrunr's Avatar
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    Default Re: Problems with ARP Spoofing =/

    are the host and gateway in thesame subnet, seems to me like they aren't, then again you aren't listing the subnet masks. Correct me if i'm wrong but I don't think you can arpspoof an address in an non-contiguous network.
    Wielder of the spoon of doom
    Summercon, Toorcon, Defcon, Bsides, Derbycon, Shmoocon oh my
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