nanog mailing list archives
Re: Big Temporary Networks
From: Måns Nilsson <mansaxel () besserwisser org>
Date: Fri, 14 Sep 2012 14:46:07 +0200
Subject: Re: Big Temporary Networks Date: Fri, Sep 14, 2012 at 09:22:01PM +0900 Quoting Masataka Ohta (mohta () necom830 hpcl titech ac jp):
Måns Nilsson wrote:And get v6. Do not NAT. When all those people want to do social networking to the same furry BBS while also frequenting three social app sites simultaneously you are going to get Issues if you NAT. So don't.Don't? Considering that, ten years ago, some computers were still often shared by thousands of people distinguished by their port numbers and that, today, pseudo ISPs are using NAT, it is not only wrong but also impossible to identify a user only by his IP address without port numbers.
Ohta-san, I am not suggesting that. I'm just trying to point out that there might be a bunch of assumptions that aren't as true anymore when a lot of client connections share both source and destination address, and perhaps also destination port. If this happens simultaneously when a large amount of other tcp connections are NATed through the same box, resource starvation will occur. If public address space is available, it is better to use that. Also, no NAT means there will be no session timers for things like long lived low bandwidth tcp sessions. -- Måns Nilsson primary/secondary/besserwisser/machina MN-1334-RIPE +46 705 989668 I think my career is ruined!
Attachment:
signature.asc
Description: Digital signature
Current thread:
- Re: Big Temporary Networks, (continued)
- Re: Big Temporary Networks Nat Morris (Sep 14)
- Re: Big Temporary Networks Nick Hilliard (Sep 14)
- Re: Big Temporary Networks Nat Morris (Sep 14)
- Re: Big Temporary Networks Tore Anderson (Sep 14)
- Re: Big Temporary Networks Mikael Abrahamsson (Sep 14)
- Re: Big Temporary Networks Nick Hilliard (Sep 14)
- Re: Big Temporary Networks Mikael Abrahamsson (Sep 14)
- Re: Big Temporary Networks Paul Thornton (Sep 14)
- Re: Big Temporary Networks Nick Hilliard (Sep 16)
- Re: Big Temporary Networks Masataka Ohta (Sep 14)
- Re: Big Temporary Networks Måns Nilsson (Sep 14)
- Re: Big Temporary Networks Masataka Ohta (Sep 15)
- Re: Big Temporary Networks Jimmy Hess (Sep 15)
- Re: Big Temporary Networks Måns Nilsson (Sep 16)
- Re: Big Temporary Networks Sean Lazar (Sep 13)
- Re: Big Temporary Networks Jay Ashworth (Sep 14)
- Re: Big Temporary Networks Tim Franklin (Sep 13)
- Re: Big Temporary Networks Jeroen Massar (Sep 13)
- Re: Big Temporary Networks Chris Boyd (Sep 13)
- Re: Big Temporary Networks Will Hargrave (Sep 15)