Re: [Qemu-devel] [PATCH] Slirp reverse UDP firewall

[Jan Kiszka <jan.kiszka@siemens.com>]

On 2011-04-12 18:19, Daisuke Nojiri wrote:
> This patch adds: -drop-udp, -allow-udp ADDR:PORT, -drop-log FILE
> 
>   e.g.) $ qemu -net user -drop-log qemu.drop -drop-udp -allow-udp
> 10.0.2.3:53

No more stand-alone slirp arguments please. That syntax breaks when
instantiating >1 back-ends.

> 
> -drop-udp enables usermode firewall for out-going UDP packats from a guest.
> All UDP packets except ones allowed by -allow-udp will be dropped. Dropped
> packets are logged in the file specified by FILE. PORT can be a single
> number
> (e.g. 53) or a range (e.g. [80-81]). If ADDR is ommitted, all addresses
> match
> the rule.

Will we see a TCP firewall as well? Can we prepare for a more generic
infrastructure, or what makes UDP special?

Also, please break up in smaller bits (example: logging would be a
separate topic). And make sure that your patches aren't line-wrapped.

Thanks,
Jan

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