OnSSI NetDVMS Rev 6.5
System Requirements
On-Net Surveillance Systems, Inc. | 222 Route 59, Suite 303, Suffern, NY 10901 | T: 845-369-6400 | F: 845-369-8711 | www.onssi.com | [email protected] | page 8
Important Port Numbers
NetDVMS
uses particular ports when communicating with other computers, cameras, etc.
What is a port?
A port is a logical endpoint for data traffic. Networks use different ports for different
types of data traffic. Therefore it is sometimes, but not always, necessary to specify which port to use for
particular data communication. Most ports are used automatically based on the types of data included in
the communication. On TCP/IP networks, port numbers range from 0 to 65536, but only ports 0 to 1024
are reserved for particular purposes. For example, port 80 is used for HTTP traffic which is used when
viewing web pages.
When using NetDVMS, make sure that the following ports are open for data traffic on your network:
•
Port 20 and 21 (inbound and outbound):
Used for FTP traffic. FTP (File Transfer Protocol) is a
standard for exchanging files across networks. FTP uses the TCP/IP standards for data transfer,
and is often used for uploading or downloading files to and from servers.
•
Port 25 (inbound and outbound):
Used for SMTP traffic. SMTP (Simple Mail Transfer Protocol) is a
standard for sending e-mail messages between servers. This port should be open since,
depending on configuration, some cameras may send images to the surveillance system server
via e-mail.
•
Port 80 (inbound and outbound):
Used for HTTP traffic between the surveillance server and
cameras, NetGuards and/or NetGuard-EVSs, and the default communication port for the
surveillance system's Image Server. HTTP (HyperText Transfer Protocol) is a standard for
exchanging files across networks; widely used for formatting and transmission of data on the
world wide web.
•
Port 1024 and above (outbound only):
Used for HTTP traffic between cameras and the
surveillance server.
•
Any other port numbers you may have selected to use, for example if you have changed the
Image Server's port from its default port number (80) to another port number.
Tip:
Consult the administrator of your organization's firewall if in doubt about how to open ports for
traffic.
Windows Vista Information
If you wish to install, configure and run NetDVMS on a Windows Vista computer, it is very important that
you have administrator rights. If you only have standard user rights, you will not be able to configure the
software or stop and start the Recording Server service. However, you are still able to view live and
recorded video via the NetGuard-EVS.
These restrictions are a part of the User Account Control, a security component in Windows Vista. Note,
however, that it is possible to disable the User Account Control. For more information visit
www.microsoft.com, and search for Vista User Account Control or similar.
