Setup
Port Address Translation
Cisco RV320/RV325 Administration Guide
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Port Address Translation
Port Address Translation (PAT) is an extension of Network Address Translation
(NAT) that permits multiple devices on a LAN to be mapped to a single public IP
address to conserve IP addresses.
PAT is similar to port forwarding except that an incoming packet with destination
port (external port) is translated to a packet different destination port (an internal
port). The Internet Service Provider (ISP) assigns a single IP address to the edge
device. When a computer logs on to the Internet, this device assigns the client a
port number that is appended to the internal IP address, giving the computer a
unique IP address.
If another computer logs on the Internet, this device assigns it the same public IP
address, but a different port number. Although both computers are sharing the
same public IP address, this device knows which computer to send its packets,
because the device uses the port numbers to assign the packets the unique
internal IP address of the computers.
To add or edit PAT:
STEP 1
To add a service, click
Add
in the Port Address Translation table.
To edit a service, select the row and click
Edit
. The fields are open for
modification.
If the web browser displays a warning about the pop-up window, allow the
blocked content.
STEP 2
Select the
Service
from the drop-down menu. You can have up to 30 services. (If a
service is not listed, you can modify the list by following the instructions in the
Adding or Editing a Service Name
section.)
STEP 3
Enter the IP address or the name of the network device where the service resides.
STEP 4
Click
Save
.
Summary of Contents for Small Business RV320
Page 1: ...Cisco RV320 RV325 Gigabit Dual WAN VPN Router ADMINISTRATION GUIDE ...
Page 2: ...78 20928 01 ...
Page 10: ...Getting Started Features of the User Interface 10 Cisco RV320 RV325 Administration Guide 1 ...
Page 16: ...System Summary Log Setting Status 16 Cisco RV320 RV325 Administration Guide 2 ...
Page 54: ...DHCP Router Advertisement IPv6 54 Cisco RV320 RV325 Administration Guide 4 ...
Page 68: ...System Management Backup and Restore 68 Cisco RV320 RV325 Administration Guide 5 ...
Page 74: ...Port Management 802 1X Configuration 74 Cisco RV320 RV325 Administration Guide 6 ...
Page 80: ...Firewall Content Filter 80 Cisco RV320 RV325 Administration Guide 7 ...
Page 106: ...Certificate Management CSR Authorization 106 Cisco RV320 RV325 Administration Guide 9 ...
Page 118: ...Wizard 118 Cisco RV320 RV325 Administration Guide 12 ...
Page 122: ...Where to Go From Here 122 Cisco RV320 RV325 Administration Guide 14 Revised August 2014 ...