Fwd: [PATCH] enhance usability of /proc/sys/net/ipv4/ip_local_reserved_ports (v2)

Francis Dupont fdupont at isc.org
Wed Mar 14 08:52:33 UTC 2012


> this patch just went by the list. perhaps we can use something similar.

=> this seems a clear abuse of the ip_local_reserved_ports feature
but has too nothing to do with SD: at the exception of the PCP/UPnP/...
tools a SD-CPE is a plain standard port-restricted-range NAT, i.e.,
it uses the port range feature of iptables SNAT:

      --to-source [ipaddr[-ipaddr]][:port[-port]]
                                   ^^^^^^^^^^^^^^

(from man iptables, SNAT section, BTW kernels of this century are
limited to one range per protocol).

Regards

Francis Dupont <fdupont at isc.org>


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