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Glossary
FAQ
firewall
firmware
FRITZ!Box Fon WLAN 7113
IP address. They are called dynamic because every
participant receives a new public address that has not
been assigned yet each time he or she dials in to the
Internet.
By contrast, dynamic addresses are usually used in local
IP networks because they are easy to handle, and because
using them avoids incorrect IP address entries or
unintentional double assignments. The DHCP service is
responsible for assigning unique dynamic IP addresses.
abbreviation for Frequently Asked Questions
FAQs are collections with answers to frequently asked
questions on a certain subject area.
A firewall protects a PC or local network against attacks
from the Internet.
Most firewalls work with packet filters, which merely
check the IP addresses and port numbers of incoming and
outgoing data packets and filter the packets according to
prescribed rules.
Some firewalls also integrate additional concepts like IP
masquerading and NAT to decouple data traffic by
distinguishing strictly between the internal and external
network.
Especially effective firewalls go even further, analyzing
and evaluating the contents of the packets and filtering
them according to prescribed rules. Such techniques may
also include a Stateful Packet Inspection Firewall, for
instance.
The firmware is saved in programmable components
within a device. Through the possibility of updating the
firmware by computer at any time, manufacturers enjoy
great flexibility in reacting to the demands of the
operational environment, integrating new functions
requested
by
discovered after production,
108
customers,
and
eliminating
errors
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