Re: enabling tcpip_socket by default - Mailing list pgsql-hackers

From Andrew Dunstan
Subject Re: enabling tcpip_socket by default
Date
Msg-id 40A93610.1010105@dunslane.net
Whole thread Raw
In response to Re: enabling tcpip_socket by default  (Greg Stark <gsstark@mit.edu>)
Responses Re: enabling tcpip_socket by default  (Bruno Wolff III <bruno@wolff.to>)
List pgsql-hackers
Greg Stark wrote:

>  
>
>>Ah! Of course. That makes sense, and listening on 127.0.0.1 never
>>hurt anyone (except, of course, the tinfoil hat crowd nmapping
>>localhost in a frenzy...)
>>    
>>
>
>Actually on many systems it was very possible to send packets to a machine
>with a source address of 127.0.0.1 even over external networks or through
>routers. Making an attack out of this on a TCP service would be difficult, but
>it has been done.
>
>Good OS distributions install network filters by default to refuse such
>packets, but lots of OSes still don't do this.
>
>  
>


But what we listen to relates to the destination address of the packets, 
not the source address ...

cheers

andrew


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