does CG-NAT work with the Xbox people? On Mon, Jan 15, 2018 at 1:39 PM, Chuck McCown <[email protected]> wrote:
> I need to have about /19 worth of customers natted to as few V4s as is > needed to make it work properly. > > We currently have about 3 /21s I think. Don’t want to have to buy a > fourth. > > *From:* Dennis Burgess > *Sent:* Monday, January 15, 2018 11:34 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] IPv4 exhaust again > > > Mikrotik can do that, I have a router with 20k NAT rules natting two /21s > to less than 254 ips .:) > > > > > > *Dennis Burgess** –** Network Solution Engineer – Consultant * > > MikroTik Certified Trainer/Consultant > <http://www.linktechs.net/productcart/pc/viewcontent.asp?idpage=5> – > MTCNA, MTCRE, MTCWE, MTCTCE, MTCINE > > > > For Wireless Hardware/Routers visit www.linktechs.net > > Radio Frequency Coverages: www.towercoverage.com > > Office: 314-735-0270 <(314)%20735-0270> > > E-Mail: [email protected] > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *George Skorup > *Sent:* Monday, January 15, 2018 12:28 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] IPv4 exhaust again > > > > Dual-stack and CGN? You can get 8:1, 16:1 or even 32:1 out of a single > public IPv4 address. Give 8 customers 8k ports each, or 16 customer 4k > ports each, 32 customers 2k ports each. That's *source* ports, so they're > not limited to 8k, 4k or 2k connections total. You have to look at in both > directions. 10.10.10.10:1024 -> 8.8.8.8:53 and 10.10.10.10:1024 -> > 8.8.4.4:53 mappings are both valid, and it obviously goes a lot deeper > than that. > > Seems to be a whole lot easier than some crazy NAT appliance that's > running the whole network. I haven't done anything like this, but I'm > considering it. I think Juniper even lets you do this with a couple > commands? Yeah, I'm too cheap for that. > > Something else to keep in mind is that most consumer grade routers still > have a fairly limited connection table. My Cambium cnPilot router I have at > home lets you adjust the max table size (up to 8192). Most are 2k or 4k. > While even a low-end MikroTik will give you >100k. > > On 1/15/2018 11:35 AM, Chuck McCown wrote: > > Planning to buy another /21 or some such thing .... again ...... > > � > > So going to attempt to NAT the whole frigging company. > > � > > Seems like I am going in reverse here. > > � > > If we can make NAT work for most customers, then that will buy us time to > build our magic V4 translator gateway box for a V6 only network.� > > � > > Any suggestions on the best way to do this? > > >
