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Network Security Guide

Quick guide to network security

1: Change default passwords

Network devices such as a router will come with a default password. It is important to change this password because not everybody does and hackers are aware of this.

2: Don't reuse passwords

It is a common fault for people to stick to a favourite password, not change it periodically and use the same password for everything. If one device is compromised then all the devices would be compromised.

3: Disable user accounts when an employee leaves 

When an employee leaves an organisation their accounts should be disabled to stop ant unwanted access at a later date. Security breaches are easier to pull off when the attacker has insider information. 

4: Examine security logs 

A good network administrator will review system logs on a regular basis. It also make sense to play close attention to security logs, as they're the first line of defence.

5: Do regular network scans

Carrying out regular network scans will quickly identify any rogue equipment on the network. This could be a member of staff’s personal laptop etc. One method of scanning the network is to use the built-in Microsoft command Netview. 

6: Monitor outbound network traffic

It is worth investing in a good Firewall e.g. ZyXEL with related software to monitor outbound traffic. Advanced firewalls can even create scheduled reports. It is becoming increasingly difficult to detect Malware. One method of exposing it is monitoring outbound network traffic and anything suspicious can be acted upon.

7: Patch and update regularly

It is very important to patch operating systems and application software on a regular basis making them less vulnerable to an attack.

8: Implement a security plan

It is generally good practice for a business these days to have an IT Policy and/or Security Plan in place and raise user awareness about information security. Alliance Solutions can assistance in this area.