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Re: Port Scanning



I think you could design a perl script or some kind of script for that if a
icmp/udp/tcp is being done to your system at x amount of time you could use
ipfwadm to block it. ipfwadm is a very powerful tool. I used to be port
scanned daily and icmp attack, use ipfwadm to block it. 

> 
> 
> > > Is there anything out there to stop people from port scanning my system ?
> > > I had someone last night scan my system from port 1 to 50,000 !
> > 
> > Firewalling or tcp_wrappers configured the right way.
> 
> tcp-wrappers will not stop you from being scanned.  even if the port is
> wrapped it will still show up as an open port to a scan.  you also can't
> wrap udp services.
> 
> if you are paranoid enough that this is an issue i suggest you break out
> a firewall book and ipfwadm and decide who exactly you want to be able to
> talk to what on your box.
> 
> > There is nmap in hamm that does the port scanning.
> 
> there is also strobe that comes with the netdiag package... it's very
> good.
> 
> adam.
> 
> ------------------------ Internet Alaska -------------------------
>  4050 Lake Otis		    Adam Shand        (v) +1 907 562 4638
>  Anchorage, Alaska    Systems Administrator   (f) +1 907 562 1677
> ----------------- http://larry.earthlight.co.nz ------------------
> 
> 
> 
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> 


-- 


        _  ,/|   Chi Wong
       '\O.O'    "Life is a shitload of TESTS !"
       =(_ _)=   cw005e@uhura.cc.rochester.edu
         |U|     chi@gatekeeper.cif.rochester.edu
        /  |     phreak@cif.rochester.edu
       //|  \    http://www.cif.rochester.edu/~phreak/main.html



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