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Step 1.
Select DDNS service provider.
ZSR0104C SERIES supports two DDNS service providers,
www.no-ip.com
or
www.dyndns.org
. Browse the DDNS service provider’s web page and register a new
account there. Your DDNS service provider will provide you the account ID and
password.
Step 2.
Go through the DDNS settings in ZSR0104C SERIES DDNS section.
Select one DDNS
service provider, and fill in the necessary information form DDNS service provider such
as ID, password, and related settings etc.
If no-ip.com was selected, User Name and Password are mandatory; one or both of Host
Name and Group Name have to be entered.
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If dyndns.org was selected, User Name, Password and Host Name are mandatory; Enable
Wildcard, Mail Exchanger and Backup MX are optional.
Step 3.
Update the IP address.
When WAN public IP address changes, ZSR0104C SERIES will
automatically inform your DDNS service provider the new IP address, or you can force
the IP address update by clicking the
Update
button.
The update message will show on the screen if the
Refresh
button was clicked. For
example, the status will show “
No DDNS update activity
” after clicking the
Refresh
button.
5.8 DHCP Server
1. DHCP Definition
DHCP is the acronym of
Dynamic Host Configuration Protocol
. It can automate the IP Address
allocation in the network. When this protocol is activated, a DHCP server can automatically assign
the IP addresses to the DHCP clients. Also, a DHCP client can automatically obtain its IP addresses
from the DHCP server.
2. DHCP Server in LAN
By default, ZSR0104C SERIES works as a DHCP server and automatically assigns the IP addresses
to each client PC on the LAN side.
A.
Auto-Remember
When assigning IP addresses to LAN clients, ZSR0104C SERIES can remember each LAN
client’s IP address corresponding to the client’s MAC address. Thus the LAN client will
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receive the same LAN IP address, when ZSR0104C SERIES assigns IP addresses in the next
time.
B.
The Pool Range of Assigned IP Address
When DHCP is enabled, you can assign a group of LAN IP addresses. The group is called as
“the pool.” You can enter numbers from 2 to 254 in the blanks. The maximum capacity is 253
IP addresses. The number behind “
Starting
” must be smaller than that behind “
Ending
”. You
can specify the domain name for the group of LAN IP addresses, which are managed by the
DHCP server. Click the button
Apply
to make your settings take effect.
C.
The DHCP IP Address Lease Time
The DHIP IP can use time .If choice one day, the get IP after one day, will be release and
renew new IP.
3. DHCP Client in LAN
When DHCP is enabled in both ZSR0104C SERIES and the LAN clients, the LAN PC client can
automatically obtain the IP settings, including IP address, Domain Name, Subnet Mask, Primary
DNS, and Secondary DNS from ZSR0104C SERIES.
4.
Static IP Assign
When DHCP is enabled, the NAT can assign the fixed IP according to Mac address.
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5.
DHCP Client List
When DHCP is enabled. Will see how many DHCP clients get IP address form the NAT.
If you want to enable DHCP in your PC, refer to
A.1
Enable DHCP in Your PC
in
Appendix A:
Configure TCP/IP in Your PC
.
5.9 Virtual Server (Port Forwarding)
The firewall in ZSR0104C SERIES blocks the traffic initiated from the Internet in order to protect
your LAN. However, ZSR0104C SERIES can provide tunnel service and forward the Internet
service packet specified with a port number to the server specified by a LAN IP address. In other
words, ZSR0104C SERIES can open the port for the service with specified port number and then
“
forward
” the port to the server specified by a LAN IP address. This function is called as “Virtual
Server” or “Port Forwarding”.
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As illustrated as above, when ZSR0104C SERIES obtains traffic of Port 21 from the Internet, it will
forward it to the FTP server with LAN IP address 192.168.1.2. If ZSR0104C SERIES receives
traffic of Port 80, it will re-direct it to the Web server with LAN IP 192.168.0.3.
To enable Virtual server, enter the port number to specify the service type, and the server’s LAN IP
address for the traffic destination. Check
Enable
. Then click the button
Apply
to make your
settings take effect. For the information of port number and the corresponding service, please refer
to
Appendix B: Common Port Numbers
.
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