nanog mailing list archives
Re: PlayStationNetwork blocking of CGNAT public addresses
From: Masataka Ohta <mohta () necom830 hpcl titech ac jp>
Date: Sat, 17 Sep 2016 09:54:46 +0900
Simon Lockhart wrote:
Has anyone else come up against the problem, and/or have any suggestions on how best to resolve it?
The best solution is to have a common practice on a set of public port numbers assigned to a host behind NAT. For example, with a practice that, if a port in a range between N*8 and N*8+7 is assigned to a host, other ports in the range is not assigned to other hosts, service providers can block packets based on IP addresses and ranges, especially if correspondence between hosts and ranges are rather stable. But, it may be too late to make such practice common, I'm afraid. Or, wait for a while until service providers receive enough amountof feedback from innocent users. To accelerate it, you can make correspondence between hosts and public addresses not so stable,
which makes almost all your IP addresses marked bad quickly, which may make you loss some customer, unless other ISPs also do so. Masataka Ohta
Current thread:
- PlayStationNetwork blocking of CGNAT public addresses Simon Lockhart (Sep 16)
- Re: PlayStationNetwork blocking of CGNAT public addresses Mike Hammett (Sep 16)
- Re: PlayStationNetwork blocking of CGNAT public addresses Roland Dobbins (Sep 16)
- Re: PlayStationNetwork blocking of CGNAT public addresses Simon Lockhart (Sep 16)
- Re: PlayStationNetwork blocking of CGNAT public addresses Roland Dobbins (Sep 16)
- RE: PlayStationNetwork blocking of CGNAT public addresses michalis.bersimis (Sep 16)
- Re: PlayStationNetwork blocking of CGNAT public addresses Simon Lockhart (Sep 16)
- Re: PlayStationNetwork blocking of CGNAT public addresses A . L . M . Buxey (Sep 16)
- Re: PlayStationNetwork blocking of CGNAT public addresses Ca By (Sep 16)
- RE: PlayStationNetwork blocking of CGNAT public addresses Tony Wicks (Sep 16)
- Re: PlayStationNetwork blocking of CGNAT public addresses Masataka Ohta (Sep 16)
- Re: PlayStationNetwork blocking of CGNAT public addresses Tom Smyth (Sep 18)
- Re: PlayStationNetwork blocking of CGNAT public addresses Rich Kulawiec (Sep 18)
- Re: PlayStationNetwork blocking of CGNAT public addresses Florian Weimer (Sep 18)
- Re: PlayStationNetwork blocking of CGNAT public addresses Rich Kulawiec (Sep 19)
- Re: PlayStationNetwork blocking of CGNAT public addresses Florian Weimer (Sep 19)
- Re: PlayStationNetwork blocking of CGNAT public addresses Rich Kulawiec (Sep 23)
- Re: PlayStationNetwork blocking of CGNAT public addresses Rich Kulawiec (Sep 18)
- Re: PlayStationNetwork blocking of CGNAT public addresses Mike Hammett (Sep 18)
- Re: PlayStationNetwork blocking of CGNAT public addresses Florian Weimer (Sep 18)
- Re: PlayStationNetwork blocking of CGNAT public addresses Simon Lockhart (Sep 18)