WinGate Intermediary Fix/Update

From: Mike Zimmerman (mikeat_private)
Date: Thu Mar 26 1998 - 00:00:01 PST

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    Apologies for any information repeated.
    
    As of WinGate release 2.1b, the default behavior of the program is to not
    accept proxy connections on the "real" IP address of the machine by
    default. Since the damage has already been done with the mass use of the
    earlier versions, I threw together a simple stopgap fix for Cisco routers.
    Adding the following lines to your access lists gives a simple and
    effective fix for the majority of the problem:
    
    
    router#config t
    Enter configuration commands, one per line.  End with CNTL/Z.
    router(config)#access-list <n> deny tcp any <user space address> <user
    space hostmask> eq 1080
    router(config)#access-list <n> permit ip any any
    router(config)#int <ethernet interface>
    rouetr(config-if)#ip access-group <n> in
    
    <n>=a number between 100-199
    <user space address>/<user space hostmask>=The addresses of your dialup
    users. Please noted that access list hostmasks are backwards from normal
    convention, so a 255.255.255.0 subnetmask would be 0.0.0.255.
    <ethernet interface>=the interface of the network segment your dialup users
    are on. The last two commands can be repeated
    for multiple interfaces.
    
    
    What this does:
    
    This blocks the standard SOCKS Proxy port for all machines inside the
    specified network mask. Since there are VERY few instances where an ISP
    would find it desirable for a user to run a proxy on their dialup
    connection, this shouldn't disrupt any of your services.
    
    Also, please note that there is an article posted to
    http://www.wingate.net/secure-wingate.htm on how to secure open WinGate's.
    
    Hope this helps,
    
    Mike Zimmerman
    mikeat_private
    



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