ipfilter(4) needs maintainer
Lev Serebryakov
lev at FreeBSD.org
Mon Apr 15 10:44:31 UTC 2013
Hello, Kimmo.
You wrote 15 апреля 2013 г., 14:36:27:
>> And, yes, NAT64 will be useful for sure, but it is another story,
>> not IPv6<->IPv6 translation.
KP> You're forgetting set ups where outgoing traffic is controlled by
KP> filter rules, outgoing passive mode ftp needs help from the proxy to
KP> open holes for arbitrary ports. This is not limited to IPv4 and NAT.
It could be done without IPv6 prefix mapping. Yes, firewall should
have ability to expect some connections fro FTP commands (some flag
on rule, for sure), but it is not prefix rewriting (there are some
other protocols, which need similar treatment, like SIP)! I was
shocked by idea of true NAT from IPv6 to IPv6. IPv6 has its own
problems and complications, but one REALLY GOOD side of it, that we
don't need NAT for it anymore! Some special tricks in firewall -- yes,
maybe, for bad-designed, but widely-deployed application level
protocols, but not address translations!
I, personally, don't see any problems to enable all outbound
connections for dedicated FTP server, though.
--
// Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>
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