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Page 91 / 110 Scroll up to view Page 86 - 90
TW-EA510 version 4 ADSL2+, WLAN 802.11g, VPN, Firewall Router
Chapter 4: Configuration
90
Time Schedule:
A self-defined time period to enable your virtual server.
You may specify a time
schedule or Always on for the usage of this Virtual Server Entry.
For setup and detail, refer to
Time
Schedule
section
Application
: Users-defined description to identify this entry or click
to select existing
predefined rules.
:
20 predefined rules are available.
Click the Radio button to select the rule; Application,
Protocol and External/Redirect Ports will be filled after the selection.
Protocol
: It is the supported protocol for the virtual server. In addition to specifying the port number to
be used, you will also need to specify the protocol used. The protocol used is determined by the
particular application. Most applications will use TCP or UDP;
Global IP:
Define a public/ WAN IP address for this Application to use.
This Global IP address must be
defined in the
Global IP Address.
External Port:
The Port number on the Remote/WAN side used when accessing the virtual server.
Redirect Port:
The Port number used by the Local server in the LAN network.
Internal IP Address:
The private IP in the LAN network, which will be providing the virtual server
application.
List all existing PCs connecting to the network. You may assign a PC with
IP address and MAC from this list.
Select the
Apply
button to apply your changes.
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TW-EA510 version 4 ADSL2+, WLAN 802.11g, VPN, Firewall Router
Chapter 4: Configuration
91
Example: List of some well-known and registered port numbers.
The Internet Assigned Numbers Authority (IANA) is the central coordinator for the assignment of unique
parameter values for Internet protocols. Port numbers range from 0 to 65535, but only ports numbers 0
to 1023 are reserved for privileged services and are designated as “well-known ports” (Please refer to
Table 5).
The registered ports are numbered from 1024 through 49151. The remaining ports, referred
to as dynamic or private ports, are numbered from 49152 through 65535.
For further information, please see IANA’s website at:
For help on determining which private port numbers are used by common applications on this list, please
see the FAQs (Frequently Asked Questions) at:
Table 5: Well-known and registered Ports
Port Number
Protocol
Description
20
TCP
FTP Data
21
TCP
FTP Control
22
TCP & UDP
SSH Remote Login Protocol
23
TCP
Telnet
25
TCP
SMTP (Simple Mail Transfer Protocol)
53
TCP & UDP
DNS (Domain Name Server)
69
UDP
TFTP (Trivial File Transfer Protocol)
80
TCP
World Wide Web HTTP
110
TCP
POP3 (Post Office Protocol Version 3)
119
TCP
NEWS (Network News Transfer Protocol)
123
UDP
NTP (Network Time Protocol)
161
TCP
SNMP
443
TCP & UDP
HTTPS
1503
TCP
T.120
1720
TCP
H.323
4000
TCP
ICQ
7070
UDP
RealAudio
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TW-EA510 version 4 ADSL2+, WLAN 802.11g, VPN, Firewall Router
Chapter 4: Configuration
92
Time Schedule
The Time Schedule supports up to 16 time slots which helps you to manage your Internet connection.
In
each time profile, you may schedule specific day(s) i.e. Monday through Sunday to restrict or allowing
the usage of the Internet by users or applications.
This Time Schedule correlates closely with router’s time, since router does not have a real time clock on
board; it uses the Simple Network Time Protocol (SNTP) to get the current time from an SNTP server
from the Internet. Refer to
Time Zone
for details.
You router time should correspond with your local
time.
If the time is not set correctly, your Time Schedule will not function properly.
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TW-EA510 version 4 ADSL2+, WLAN 802.11g, VPN, Firewall Router
Chapter 4: Configuration
93
Configuration of Time Schedule
Edit a Time Slot
1.
Choose any Time Slot (ID 1 to ID 16) to edit, click
Edit.
Note:
Watch it carefully, the days you have selected will present in capital letter.
Lower case letter shows the
day(s) is not selected, and no rule will apply on this day(s).
2.
A detailed setting of this Time Slot will be shown.
ID:
This is the index of the time slot.
Name:
A user-define description to identify this time portfolio.
Day:
The default is set from Monday through Friday.
You may specify the days for the schedule to be
applied.
Start Time:
The default is set at 8:00 AM.
You may specify the start time of the schedule.
End Time:
The default is set at 18:00 (6:00PM).
You may specify the end time of the schedule.
Select the
Apply
button to apply your changes.
Delete a Time Slot
Click
Clear
to delete the existing Time profile, i.e. erase the Day and back to default setting of Start Time
/ End Time.
Click Edit
Page 95 / 110
TW-EA510 version 4 ADSL2+, WLAN 802.11g, VPN, Firewall Router
Chapter 4: Configuration
94
Advanced
Configuration options within the
Advanced
section are for users who wish to take advantage of the
more advanced features of the router. Users who do not understand the features should not attempt to
reconfigure their router, unless advised to do so by support staff.
There are four items within the
Advanced
section:
Static Route, Dynamic DNS
,
Check Email, Device
Management, IGMP,
VLAN Bridge
and
WAN IP Alert.
Static Route
Click on
Routing Table
and then choose
Create Route
add a routing table.
Destination:
This is the destination subnet IP address.
Netmask:
Subnet mask of the destination IP addresses based on above destination subnet IP.
Gateway:
This is the gateway IP address to which packets are to be forwarded.
Interface:
Select the interface through which packets are to be forwarded.
Cost:
This is the same meaning as Hop. This should usually be left at 1.

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