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Thread: Forwarding error in ettercap

  1. #1
    Good friend of the forums gunrunr's Avatar
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    Default Forwarding error in ettercap

    I'm connected via eth0 to my netgear router running ettercap on my lenovo, its running on BT4 final in Vmware.
    the computer i'm sniffing is running windows vista 64 bit, and im using ARP poisoning for my MITM attack.
    I was able to sniff my NNTP login credentials but for some reason my connections timed out when i was trying to view web pages, and access my gmail. the error i was getting was in this line

    Code:
    SEND L3 ERROR :922 byte packet (0800:01) destined to 192.168.0.4 was not forwarded (libnet_write_ipv4(): -1 bytes written (message too long)
    as far as the options i chose in ettercap :
    its bridged sniffing
    promiscuous mode
    and sniff remote connection
    let me also mention that i was using the gtk release in version 0.7.3

    The question is can i change any config so that it will forward any size packet so i won't receive the error and my connections wont be dropped. The NNTP traffic all forwarded fine, but it was just the HTTP traffic that wasn't forwarded.

  2. #2
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    Default Re: Forwarding error in ettercap

    been a while since I did this but things that come to mind first... is your VMware in bridge mode?
    also are you poising proper IP like your gateway?

  3. #3
    Junior Member
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    Default Re: Forwarding error in ettercap

    Have you been able to solve the problem?

  4. #4
    My life is this forum Snayler's Avatar
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    Default Re: Forwarding error in ettercap

    On the Internets, some say that "echo 1 > /proc/sys/net/ipv4/ip_forward" may help.

  5. #5
    Just burned his ISO
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    Default Re: Forwarding error in ettercap

    I have this problem as well - did you find solition ?

  6. #6
    Just burned his ISO
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    Default Re: Forwarding error in ettercap

    did you uncomment the ip_tables option in /etc/etter.conf.
    gmail is https so this option is necessary.

    good luck

  7. #7
    Junior Member
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    Default Re: Forwarding error in ettercap

    i have never been able to solve the problem. i think it was due to the fact that the wireless router was an Apple airport. Also, the WLAN where I got this error was of pretty bad quality. This in combination with a wireless MITM attack was in my opinion the reason for this error.

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