Connecting two servers

Firstly I'll state what I want to achieve and would welcome any advice.
Currently have my business network 192.168.2.x connected to my home network 192.168.1.x via VPN run by my two respective routers. Works perfectly.
Have recently installed new Lion Server on work network to handle, DNS, Mail, OD, Address Book, Chat, etc.
Am considering installing Lion Server on home network to handle the same (probably not all or as much as don't have the need)
Would it be better to use the two servers running VPN to link the two networks or leave as is via the two routers.
I imagine setting up the DNS to be the more difficult over the tasks involved. As really like just going to any machine on our network and typing mail into a browser and getting my email via webmail. I guess I would have to setup DNS on both servers to direct requests to the right server that handles the right domain.
Getting ahead of my self but would then like one server to back up the others services, if possible.
Any words of wisdom appreciated.

First you want to get static IP's and then you can setup an IPSEC tunnel or site to site VPN.  Then you will want to creat a trust between the 2 domains if they are in different forests.  Then you can add your user account to a universal group (forest functional level must be at Server 2003 level) for enterprise management.
James Goodwin - Senior Technical Instructor & Network Infrastructure Expert
MCT, MCP+ I, MCTS:Server 2008, MCTS: SCCM, MCTS:Vista
MCSA:S, MCSE:S, MCITP:SA, MCITP:EA , MCITP:ES, CCNA,
CCSI(# 32018),C|EH, C|HFI, C|EI, HDSA, A+, Network+, i-Net+, Server+, Security+
My Blog:http://thattrainerguy.blogspot.com/

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    Peggy Adrian
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    [email protected]
    ---------------------- Forwarded by Peggy Lynn Adrian/AM/LLY on 01/12/98 01:09
    PM ---------------------------
    MOHAN CHICKMAGALUR <[email protected]> on 01/12/98 01:13:40 AM
    Please respond to MOHAN CHICKMAGALUR <[email protected]>
    To: [email protected]
    cc: [email protected]
    Subject: Connecting two Central Servers??
    Dear Friends,
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    Get Your Private, Free Email at http://www.hotmail.com

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    Venkat J Kodumudi
    Price Waterhouse LLP
    Internet: [email protected]
    Internet2: [email protected]
    -----Original Message-----
    From: [email protected] [SMTP:[email protected]]
    Sent: Monday, January 12, 1998 7:32 PM
    To: Venkat Kodumudi
    Subject: Connecting two Central Servers??
    To: [email protected] @ Internet
    cc: [email protected] @ Internet
    From: [email protected] @ Internet
    Date: 01/11/98 10:13:40 PM PST
    Subject: Connecting two Central Servers??
    Dear Friends,
    Wish U all avery happy new year. In our office we have 2
    groups
    working on two different Forte Central Server, say FCS-A & FCS-B.
    FCS-A
    has the Oracle Database. We now want the clients connected to FCS-B to
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    Thanks in Advance for the help
    mohan
    Get Your Private, Free Email at http://www.hotmail.com

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    Mobile: +965 97180549
    [email protected]

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    Remote Server SRVDC3 (87.75.45.66/29).
    4)   
    All the computers in
    LAN1, including Server SRVDC1, have a gateway set on “192.168.10.1” which is a
    Asus WiFi Router as a core switch which is connected to our Fiber Optic Translator. <o:p></o:p>
    5)   
    To prevent and minimize any down-time risk during the configuration, I have isolated one computer “table2pc5.domain.local” as sample of the
    whole network; by changing its gateway set to 192.168.10.6 (the
    Ether3-Slave-Lacal-interface on the MikroTikRouter).
    I am going to replace the “Asus WiFi Router” shown in the map, by the
    MikroTik Router later, after making sure that everything would work properly, so, everything is going to be naturalized after.
    6)   
    My
    solution simply can be explained as below:
    a.   
    Providing
    another interface in addition to “Netelligent Network” adapter.
    b.   
    To
    assign a LAN-based IP (in network range 192.168.10.0/24) to the added adapter (Microsoft Virtual Adapter)
    c.   
    Configuring
    SRVDC3 in Netelligent network “LAN2” as
    a Remote Access Server (VPN Server).
    d.   
    To provide a
    MikroTik Router/Firewall on the Edge of the
    LAN1 as VPN Client.
    e.   
    Configure
    MikroTik Router VPN PPTP connection to
    SRVDC3 via the Internet.
    f.     
    To have
    two LANs connected through a permanent VPN connection.
    7)   
    IP Addresses for the three EDGE-Devices (SRVDC1
    ßàMikroTik
    Router ßàSRVDC3)
    are as below:
    a.   
    SRVDC1:
    Interface:          
    Local Area Connection
    IP Address:          
    192.168.10.2/24
    Gateway:          
    192.168.10.1/24         
    (Asus WiFi Router)
    DHCP Server Pool:          
    192.168.10.1 – 192.168.10.254 (exclusions 10.1-10.50 , 10.50-10.99 , 10.200-10.254)
    b.   
    MikroTikRouter:
    Interface:          
    Local IP          
    IP Address:     192.168.88.1/24
    Interface:          
    Ether1-gateway-master         
    IP Address:     192.168.0.1/24
    Interface:          
    Ether2-master-local               
    IP Address:     192.168.88.1/24
    Interface:          
    ether3-slave-local                  
    IP Address:     192.168.10.6/24
    DHCP Server Pool:          
    192.168.10.1 – 192.168.102.254
    c.   
    SRVDC3:
    Interface:          
    Netelligent Network                
    IP Address:     87.75.45.66/29
    Gateway: 87.75.45.65/29
    Interface:          
    Microsoft Network Adapter     
    IP Address:     192.168.10.50/24
    Gateway: 192.168.11.1
    Interface:          
    PPP Adapter RAS                  
    IP Address:     192.168.11.1/24                      
    gateway:
    8)   
    The node “table7pc2.domain.local” is not able to see<o:p></o:p>
    Now, I would ask you to help me to realise this solution by helping me to find the Bad-Routing problem, and letting me know how to fix it.
    What NAT / Rout Paths or any configuration do I need to make this two LANs visible and recognizable to each other?
    I would introduce you critical nodes which play important roles in this configuration. I have tried to colour-mark them in order to have a better recognition once you take a look at the “Ping Result” table.
    The “Ping Result” table would give you an idea which nodes are able to see which others and where does problem hide itself?

    I got my own answer :D
    1) I have to right-click on my "Routing and Remote Access" Server.
    2) on IPv4 tab, I should define a static IP Pool. I had it done before; but since that I had chosen a wide range as 192.168.11.0/24, every time the router was taking a different IP address; so I should define a very small pool with two 2
    nodes as 192.168.11.1 and 192.168.11.2. In this way, I'll have the local address (router) as 192.168.11.2 and the remote address (my remote server) as 192.168.11.1
    3) After establishment of the PPTP connection successfully, I should add an static route to the "Netelligent Network" adapter. I had it done but in the RRAS routes, so that's why it didn't work. so:
    C:\SRVDC3>_ route -p add 192.168.10.0 mask 255.255.255.0 192.168.11.2
    [Enter]
    Now, I would be able to ping all of the computers whose their gateways are set on 192.168.10 (router)
    and If I wand to see all of the computers  at the first LAN, I have to put my router at the edge of the network, instead of the ASUS WiFi Router, then change it's IP address to 192.168.10.1 or alternatively set all of the computers gateways on 192.168.10.6.

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