559096
139
Zoom out
Zoom in
Previous page
1/150
Next page
Glossary
FRITZ!Box 6810 LTE 139
port
So that a single network connection on a computer can be
used by multiple applications to exchange data with remote
sites at the same time, a computer administers what are
known as ports for the IP-based protocols TCP and UDP. Ports
substantiate the point of access for the data packets deliv-
ered via the IP Internet protocol. While the IP address deter-
mines the destination computer quite generally, the port
addresses the communication interface provided by an appli-
cation for a certain communication procedure.
The Internet protocol allots 16 bits for the specification of the
port number. Thus a total of 65,535 different port numbers
can be specified. Ports up to port number 1,024 are reserved
for special system applications and typical Internet applica-
tions. These include, for instance, the port numbers 21 for
FTP (File Transfer Protocol), 25 for SMTP (Simple Mail Transfer
Protocol), 53 for DNS (Domain Name Service) and 80 for HTTP
(Hypertext Transfer Protocol).
Ports are primarily of interest to users for their role in protect-
ing an Internet connection from external attacks. Most fire-
walls offer the possibility of preventing data traffic on certain
ports. This means that certain port numbers can be blocked
to prevent data from being delivered to system services. This
is also a way of preventing any Trojans (malicious applica-
tions opening backdoors on computers) that may have infect-
ed your computer from receiving data on ports it created as
means of accessing your computer for potentially damaging
activities. A firewall blocks most of the atypical port numbers
not required for normal operation of an application and offers
specialized users the opportunity to forward specified ports.
port forwarding
With port forwarding it is possible to specify ports that will al-
low all incoming or outgoing data packets to pass through a
router or firewall.
If a computer from the local network offers server services, for
instance, the settings of a router using NAT (see glossary) or
IP masquerading (see glossary) must enable or forward the
139


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for AVM FRITZBox 6810 LTE at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of AVM FRITZBox 6810 LTE in the language / languages: English as an attachment in your email.

The manual is 2,57 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of AVM FRITZBox 6810 LTE

AVM FRITZBox 6810 LTE User Manual - German - 162 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info