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help with wish list

I keep being asked how to improve our network, and to be honest my only honest suggestions are based on what i have used before so limited,  could any of you who do this for a living. suggest andy best of breed type alternatives.

basic structure of company is one central HQ  housing fileservers exchange and SQL 20 branch offices around the country connected by point to internet 2mb sdsl lines. citrix  300 users 40 mobile users, always expanding.

most of what we have has been done with budget in mind id like to submit a plan with performance in mind instead.

so i accept a 2mb sdsl link is not the best way for hq to connect to all other sites but it does work (enough to not warrent an imediate change)  but a 10 mb frame relay would be better?

how do you go about improving sql performance, is the central hq containing all application servers  the best idea?

 I can put more detail if needed but i think you get the genral idea.

if money was no object and that was how the business is physically set up what choices would you make network wise..
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mhamer
Asked:
mhamer
1 Solution
 
Yves AccadNetwork Security EngineerCommented:
With the limited information you gave here's a general recommendation, that may or may not apply to your specific circumstance.

My minimum requirements for a robust HQ would be:
2 routers running bgp connected by dedicated T1 to 2 seperate ISPs for redundancy and failover. (AD throughput according to need, might need T3 or more)

Firewall:
DMZ for all public services.

Inside LAN:
VLAN Switch
Sensitive Data, including databases etc..
Vlan segregation according to group access requirement

Remote Access to HQ:
VPN concentrator handeling site to site VPN as well as client mobile users.



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