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Thread: Is there a program to run IPs thru and check if they are proxy based?

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    Mike Dammann's Avatar
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    Is there a program to run IPs thru and check if they are proxy based?

    A friend's forum gets attacked by users with multiple accounts. We know some of them, but I'm wondering if there is a program where you can run IPs and find out whether or not they have been generated by a proxy.
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    TopDogger's Avatar
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    There are some proxy IP lists on the web. You might want to do a search for "proxy IP". If I remember right, the lists are fragmented. You may have to compile your own master list.

    It would not be hard to write a script that indicates when a user's IP is on the list.

    If you find a good list, please post the source here.
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    ruben's Avatar
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    What type of proxies do you think the attackers use? because if they are using web-based proxies there are several ways to block their visits.
    If they are using SOCKS it will be harder.

    How are they attacking your friend's site?

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    Mike Dammann's Avatar
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    One of the IPs keeps registering from the University of Texas. I honestly don't know if it is a ring of people or all the same guy, but want to help him getting to the bottom of it.
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    tri-pad is offline Unknown Net Builder
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    GeoIP has a open proxy filter: MaxMind - Proxy Detection

    Or you can use "NJABL": njabl.org
    (http://www.spamhaus.org/zen/index.lasso )

    And since you mentioned its a forum .. you can also find many MODs/plugins for blocking open proxies.

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    Will.Spencer (5 April, 2010)

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    For vBulletin, you can use the Check Proxy RBL on New User Registration plugin.
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    Mike-XS's Avatar
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    You could always try using the Blocklist Manager from BISS to search through IP lists of public proxies.

    BLM has a default proxy IP blocklist list in it's sources which you can check against. The proxy list is updated daily from a large range of public proxy sources and includes TOR IP's, which are popular for abuse & spamming too.

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