HP EliteBook 2570p Notebook PC - Manual (Page 78)

There are two types of firewalls to consider:
● Host-based firewalls—Software that protects only the computer it is installed on.
● Network-based firewalls—Network based firewalls are installed between the computers on the
network and the connection to the Internet. Network based firewalls can be dedicated devices or
devices such as routers or switches with firewall capability.
When a firewall is installed on a system, all data sent to and from the system is monitored and
compared with a set of user-defined security criteria. Any data that does not meet those criteria is
blocked.
Your computer or networking equipment may already have a firewall installed. If not, firewall software
solutions are available.
NOTE: Under some circumstances a firewall can block access to Internet games, interfere with
printer or file sharing on a network, or block authorized e-mail attachments. To temporarily resolve the
problem, disable the firewall, perform the task that you want to perform, and then reenable the
firewall. To permanently resolve the problem, reconfigure the firewall.
1. To view or modify the firewall settings, select Computer > YaST.
NOTE: When accessing YaST, you are prompted for the root password.
2. In the left pane, click Security and Users, and then click Firewall in the right pane.
NOTE: When modifying firewall settings, you are prompted for the root password.
Installing an optional security cable
NOTE: A security cable is designed to act as a deterrent, but it may not prevent the computer from
being mishandled or stolen.
NOTE: The security cable slot on your computer may look different from the illustration in this
section. See Getting to know your computer on page 4 for the location of the security cable slot on
your computer.
1. Loop the security cable around a secured object.
2. Insert the key (1) into the cable lock (2).
68 Chapter 10 Security