Basically, the strategy to secure your business office network can be divided into the internal and external network security strategy.
Internal strategy to secure the network
Implement Backup and Disaster Recovery Procedures: Core business data is the lifeblood of any business. Implementing a multilevel backup procedure; image, file and folder, and offsite, is a simple way to protect critical data. Backup and Disaster Recovery (BDR) appliances take this a step further by helping you quicken server recovery in case of failure. Testing your backups periodically is an important component of any backup strategy.
Implement Desktop and Server Virus Protection: These software solutions have been around for a long time and they continue to evolve as threats evolve. Keep your anti-malware software current and its definitions current.
Patch Desktops and Servers Regularly: Security vulnerabilities in the operating system and in applications are regularly addressed by reputable software vendors. Take advantage of them. Keeping security patches current from your software vendors protects your computer from known attacks and vulnerabilities. Again, there are centralized patch management tools that make the process less time consuming.
Centralize Computer Administration: By implementing a server and applying a group policy across computers, you can standardize the process and save each user the time it takes to implement configurations one computer at a time. There are tools to centrally manage virus updates, security patches, desktop firewall, permission groups, and other security features.
Secure Physical Access: Do not overlook the physical location of your critical network infrastructure. These should be accessible to trained and trusted employees. Keeping this infrastructure secure in a locked room or server closet will reduce inadvertent or fraudulent access or change to network.
Secure WiFi Access: WiFi access to the network enables even mobile employees to be productive. Data, as it travels over the air is typically less secure than when it travels over wired networks. Information traveling over the air is at risk of interception. Use wireless data encryption protocols to ensure that data is encrypted during transit from source to destination to protect against risk or interception. Also, the company need to setup wireless access point for guests on a separate subnet. So they can access the Internet but not your network.
External and perimeter strategy to secure the network
Consider Outsourcing Email Services: Corporate email has become mission critical for businesses of all sizes. If you do not have a mission-critical application support infrastructure internally, consider outsourcing your email infrastructure. The widespread availability of such solutions from key industry vendors makes these affordable. And you can leave the worry of securing and maintaining such infrastructure in the hands of those that do it 24×7.
Secure the Perimeter: Connecting your network to the Internet allows you and your employees to gain access to valuable data and be productive even when on the run, but it also exposes your network to attack from intruders. Most small businesses use consumer grade routers/firewalls to protect the edge of their network that is right behind the broadband modem.
Though these devices have grown in functionality, they aren’t equipped to handle the perimeter security needs of a business. With business grade routers/firewalls/UTM (Universal Threat Management) appliances, you gain a powerful hardware platform that provides ability to filter malicious traffic and spam from the outside, receive regular security updates, provide secure remote access, implement intrusion detection and prevention services, and prevent infectious code from executing from trusted but compromised sites.
Stay Informed and Vigilant: There are numerous industry and government sites dedicated to network security. Stay informed as data and practices continue to evolve. Business-grade UTM appliances are designed to be monitored remotely from security operations centers and to send reports and alerts that may need attention.