MMTK Access control

Session overview Introduction to access control Passwords –Computers –Files –Online spaces and networks Firewalls

Introduction Access control is about ensuring that information is –Accessible to those who are authorized to see it –Not accessible to others In general, do not prevent access to information without good reason Main type of access control are passwords and firewalls.

Passwords Used for authenticate access Not infallible, but an important basic step Use passwords to secure –Computers –Files –Online spaces –Networks

Password tips Don’t reveal your password to anyone else Don’t use personal information as a password Best to choose a random sequence of alphanumeric characters not less than six characters long, using both upper and lower case character, e.g. KH92hw Never use sequential passwords (such as the names of days or months) Don’t reuse passwords (or at least not within a year or two) Change your passwords immediately if you think someone else has had access to them Never use the same password more than once on the same system

Firewalls Firewalls are hardware and software tools which –Prevent unauthorized access to and from computers via the internet –Restrict access to particular services or programmes “Good” traffic can move freely; “bad” traffic is kept out ANY computer or network which is connected to the internet should be firewalled