Drew Wutka
DWUTKA at Marlow.com
Sun Jun 1 22:12:38 CDT 2008
Whoops, replied to the wrong email.... Drew -----Original Message----- From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Stuart McLachlan Sent: Sunday, June 01, 2008 9:52 PM To: Access Developers discussion and problem solving Subject: Re: [AccessD] Hamachi as service Huh? On 1 Jun 2008 at 21:41, Drew Wutka wrote: > Ok, we'll check it out tomorrow, they were all emailing fine when we set > them up. Who knows. > > Drew > > -----Original Message----- > From: accessd-bounces at databaseadvisors.com > [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Stuart > McLachlan > Sent: Sunday, June 01, 2008 9:35 PM > To: Access Developers discussion and problem solving > Subject: Re: [AccessD] Hamachi as service > > You're mixing up and combining two things there, DHCP and NAT. > NAT doesn't assign addresses. DHCP (Dynamic Host Configuration Protocol) > does that. > > Each computer in your private network has to have a separate IP Address. > That address > can either be fixed (you enter it into the network configuration window) > or assigned from a > pool by a DHCP server each time the computer is switched on and connects > to your local > network. > > Your private network uses one of three "non-routable" address ranges. > (10.*.*.* , 172.16.*.*. - 172.31.*.* or 192.168.*.*) > > Your Internet Router has one address in this range on the "inside" and > one or more > separate public, "routable" addresses on the outside. > > Assume your Router's internal address is 192.168.1.254. > > Your workstation will be configured with an address such as > 192.168.1.3, a mask of > 255.255.255.0 and a Gateway of 192.168.1.254. > > Because of the mask, if you try to communicate with any computer in the > 192.168.1.* range, > you will talk directly to that machine. > > If you try to access any address outside of that range, the packets will > be sent to the > Gateway/Router on 192.168.1.254. The router will then send your packets > to the destination > computer. That destination computer will then send it's reply back to > the external address of > the router. Once the router receives the reply back it will send it on > to your computer > 192.168.1.3. Note that the destination computer doesn't know that the > request has come > from your workstation at 192.168.1.3, it thinks it has come from the > external address of your > router. > > NAT is the process of the router accepting packets from you, translating > your network > address into the routers own external address and translating it's > external address back to > your network address on the reply packets. The NAT software basically > keeps track of all of > the outbound packets from each of the computers on your internal > network and redirect > incoming packets to the correct originator. > > This can only work for messages which originate within your network. > If you have a > machine on your network which *listens* for requests originating from > the outside, such as > an FTP server, Web server, SMTP mail server or Remote Desktop, you have > to configure > your NAT to translate all such incoming requests to the specific > machine - so-called "Port > Forwarding". > > In this case, you can't just use an assigned DNS assigned address for > the workstation, it > must be configured so that it always uses the same address, and you > can't use the same > Port for more than one machine so in the case of Remote Desktop, you > need to use a > different port for each workstation. > > -- > Stuart > > > > On 1 Jun 2008 at 21:48, jwcolby wrote: > > > As you probably know, NAT (Network Address Translation) > > causes each computer within your network to be assigned an > > IP Address, usually in the range of 192.168.x.x. The > > problem with NAT addresses is that they "interfere" with > > remote desktop, particularly coming in from the outside > > through a router. By default, Remote Desktop uses port 3398 > > as the remote access port. In order to come in through the > > router, each machine has to be assigned a static IP address > > by the router, and then port forwarding turned on, and > > "ports" forwarded to specific IP addresses. It just becomes > > messy. > > > > -- > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com > The information contained in this transmission is intended only for the person or entity to which it is addressed and may contain II-VI Proprietary and/or II-VI Business Sensitive material. If you are not the intended recipient, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. You are notified that any review, retransmission, copying, disclosure, dissemination, or other use of, or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. > > > -- > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com -- AccessD mailing list AccessD at databaseadvisors.com http://databaseadvisors.com/mailman/listinfo/accessd Website: http://www.databaseadvisors.com The information contained in this transmission is intended only for the person or entity to which it is addressed and may contain II-VI Proprietary and/or II-VI Business Sensitive material. If you are not the intended recipient, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. You are notified that any review, retransmission, copying, disclosure, dissemination, or other use of, or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited.