The document tries to show the challenges, the benefits costs and the security implications that come up with the Virtual Private network TEchnology.
Text of Implementing VPN Virtual Private Networks for Small Offices/Organizations
1. IMPLEMENTINGA LOCAL AREA NETWORK (LAN) BETWEEN REMOTE OFFICES USING VIRTUAL PRIVATE NETWORK (VPN)What challenges, benefits, cost and security implications there areSovello Hildebrand Mgani IT Consultant - FUGIT ConsultTanzaniasovellohpmgani@gmail.com
2. Outline: Definitions: LAN, VPN, WAN, etc. Connecting distant-located offices: what optionsthere are. VPN: Advantages VPN: Options VPN: How it works VPN: Challenges 3. Definitions LAN: (Local Area Network): covers a small area.Usually confined to a small building or severalbuilding concentrated at one place. VPN: a private data network that uses existingtelecommunication infrastructure. VPN and Privacy: is achieved through the use oftunneling protocols and security procedures. WAN: (Wide Area Network): covers a largergeographical area. It was the option fordecentralized organizations before. 4. Connect distant offices An organization can have offices distributed arounda metropolitan. Before, these offices would connect using leasedlines: imagine there being 10+ branches of thesame organization. VPN came out as a solution. Each office needs tohave its own internet connection so that VPN cancreate its tunnel through. 5. VPN: Advantages Reduced costs: running costs, only startup costsmay be high e.g. buying a server (only if need be) Scalability: new offices can be added withouthaving to worry about the capacity of theconnection line. Only the internet is needed. Flexibility: allows working from any point in time:at home, along the road, outside the country, etc. Performance: the data transfer rates depends onthe speed of the internet connection to the office. Compared to the case of a leased line. 6. VPN: Options Site-to-Site VPN: Remote Terminal: 7. VPN: How it works There needs to be an internet connection. VPNuses existing telecommunications infrastructure. VPN creates a tunnel through the internet fromone office/site to another. The traffic through thistunnel is encrypted to protect any sensitive data. Each network can connect to the main officesnetwork and then to the other branch offices. Requirement: Internet connection, a VPN server foreach location, and an IP address to authenticate to. 8. Picture: Courtesy of TechRepublic.com 9. VPN: Challenges Cost: setup costs may be very large, howeverrunning costs are reduced to a minimum. Security: though VPN creates a tunnel in theInternet, it is still possible to be interfered if atall the network access credentials are not keptconfidential.