AGI Security SYS-HC0851S2 - Manual (Page 123)

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 Default: UPNP default port setting is the HTTP, TCP and UDP of the DVR.
 Add to the list: Click it to add the mapping relationship.
 Delete: Click it to remove one mapping item.
Double click one item; you can change the corresponding mapping information. See
Figure 4-75.
Important:
When you are setting the router external port, please use 1024~5000 port. Do not
use well-known port 1~255 and the system port 256~1023 to avoid conflict .
For the TCP and UDP, please make sure the internal port and external port are the
same to guarantee the proper data transmission.
Figure 4-74
Figure 4-75