[Dnsmasq-discuss] Interface-only binding not properly

[Felix Nawothnig]

Hey.

I'm running...

Dnsmasq version 2.52  Copyright (c) 2000-2010 Simon Kelley
Compile time options IPv6 GNU-getopt DBus I18N DHCP TFTP

on Ubuntu Lucid (Package version 2.52-1).

My configuration looks like this:

interface=eth0
interface=lo
bind-interfaces

But netstat tells me:

tcp 0 0 localhost:domain   *:*     LISTEN      2238/dnsmasq    
tcp 0 0 jacob:domain       *:*     LISTEN      2238/dnsmasq    
tcp6 0 0 localhost:domain  [::]:*  LISTEN      2238/dnsmasq    
tcp6 0 0 jacob:domain      [::]:*  LISTEN      2238/dnsmasq    
udp 0 0 localhost:domain   *:*                 2238/dnsmasq    
udp 0 0 jacob:domain       *:*                 2238/dnsmasq    
udp 0 0 *:bootps           *:*                 2238/dnsmasq    
        ^^^^^^^^

udp6 0 0 localhost:domain  [::]:*              2238/dnsmasq    
udp6 0 0 jacob:domain      [::]:*              2238/dnsmasq   

I doubt there is a real vulnerability there, but I'm kinda paranoid
these days. Fried a dedicated server due to a rootkit just a couple of
days ago. :-)

Cheers,

Felix