CST CST 02076219740 Information & System Security
 
METHODOLOGY

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SECURITY ALERTS
Remote & Mobile
Remote & Mobile for Global Business Access

The traditional stance was that if the perimeter was secure then the risk of attack was minimal.

The current stance is the organisations needs to be more effective and productive and this lends itself to enabling staff to work from home, equipping staff with laptops so they can travel and using mobile devices like PDA’. All of which need to punch a hole through the perimeter in some fashion to operate: email. file access, applications etc.

Securing remote and mobile working is essentially about allowing the productive access of network assets safely to external parties outside of the physical perimeter.

Strong Authentication
Without the security barrier of physical access (i.e. no longer the fact that a staff member has to be present in an office to log on), the reliance of single factor authentication like a user ID and Password is dangerous. The use of strong authentication, more commonly referred to as two factor authorisation is needed.

VPN (IPSEC)
Communication cross the internet is the same as transmitting information across an un-trusted and hostile network. Hence encrypting VPN traffic between both points to ensure information interception can not take place is essential.

VPN (clientless)
Using SSL to invoke encrypted communication through a web browser is the same IPSEC type VPN, and additionally reduces and if not eliminating the need for a VPN client on the users PC. The advantages are increased freedom and reduced support, the disadvantage is that the removal of a client allows anyone with a web browser to attempt a connection. Thus the significance of strong authentication and user awareness becomes more prevalent.

Client & Device Security
Securing the laptop, pc and the devices that they can access will ensure all points of threat are managed. Consideration for encrypting the hard drives and device memory should be considered. Denying unauthorised devices will ensure that data is not accidentally lost or maliciously stolen and prevent an innocent memory stick or Ipod for instance, from being a back door into the network for malicious code, virus, worms, and spyware.

Remote & Mobile Business Security

 
Information & System Security