1. Home
    2. /
  2. Manuals
    3. /
  3. Zyxel
    4. /
  4. P-2602HW-D1A
    5. /
  5. 56
Page 276 / 427 Scroll up to view Page 271 - 275
P-2602H(W)(L)-DxA Series User’s Guide
276
Chapter 21 Remote Management Configuration
If an outside user attempts to probe an unsupported port on your ZyXEL Device, an ICMP
response packet is automatically returned. This allows the outside user to know the ZyXEL
Device exists. Your ZyXEL Device supports anti-probing, which prevents the ICMP response
packet from being sent. This keeps outsiders from discovering your ZyXEL Device when
unsupported ports are probed.
Note:
If you want your device to respond to pings and requests for unauthorized
services, you may also need to configure the firewall anti probing settings to
match.
Figure 148
Remote Management: ICMP
The following table describes the labels in this screen.
Table 111
Remote Management: ICMP
LABEL
DESCRIPTION
ICMP
Internet Control Message Protocol is a message control and error-reporting
protocol between a host server and a gateway to the Internet. ICMP uses Internet
Protocol (IP) datagrams, but the messages are processed by the TCP/IP software
and directly apparent to the application user.
Respond to Ping
on
The ZyXEL Device will not respond to any incoming Ping requests when
Disable
is
selected. Select
LAN
to reply to incoming LAN Ping requests.
Select
WAN
to reply
to incoming WAN Ping requests. Otherwise select
LAN & WAN
to reply to both
incoming LAN and WAN Ping requests.
Do not respond to
requests for
unauthorized
services
Select this option to prevent hackers from finding the ZyXEL Device by probing for
unused ports. If you select this option, the ZyXEL Device will not respond to port
request(s) for unused ports, thus leaving the unused ports and the ZyXEL Device
unseen. By default this option is not selected and the ZyXEL Device will reply with
an ICMP Port Unreachable packet for a port probe on its unused UDP ports, and a
TCP Reset packet for a port probe on its unused TCP ports.
Note that the probing packets must first traverse the ZyXEL Device's firewall
mechanism before reaching this anti-probing mechanism. Therefore if the firewall
mechanism blocks a probing packet, the ZyXEL Device reacts based on the
corresponding firewall policy to send a TCP reset packet for a blocked TCP packet
or an ICMP port-unreachable packet for a blocked UDP packets or just drop the
packets without sending a response packet.
Apply
Click
Apply
to save your customized settings and exit this screen.
Cancel
Click
Cancel
to begin configuring this screen afresh.
Page 277 / 427
P-2602H(W)(L)-DxA Series User’s Guide
Chapter 22 Universal Plug-and-Play (UPnP)
277
C
HAPTER
22
Universal Plug-and-Play (UPnP)
This chapter introduces the UPnP feature in the web configurator.
22.1
Introducing Universal Plug and Play
Universal Plug and Play (UPnP) is a distributed, open networking standard that uses TCP/IP
for simple peer-to-peer network connectivity between devices. A UPnP device can
dynamically join a network, obtain an IP address, convey its capabilities and learn about other
devices on the network. In turn, a device can leave a network smoothly and automatically
when it is no longer in use.
See
Section 22.2.1 on page 278
for configuration instructions.
22.1.1
How do I know if I'm using UPnP?
UPnP hardware is identified as an icon in the Network Connections folder (Windows XP).
Each UPnP compatible device installed on your network will appear as a separate icon.
Selecting the icon of a UPnP device will allow you to access the information and properties of
that device.
22.1.2
NAT Traversal
UPnP NAT traversal automates the process of allowing an application to operate through
NAT. UPnP network devices can automatically configure network addressing, announce their
presence in the network to other UPnP devices and enable exchange of simple product and
service descriptions. NAT traversal allows the following:
•
Dynamic port mapping
•
Learning public IP addresses
•
Assigning lease times to mappings
Windows Messenger is an example of an application that supports NAT traversal and UPnP.
See the NAT chapter for more information on NAT.
Page 278 / 427
P-2602H(W)(L)-DxA Series User’s Guide
278
Chapter 22 Universal Plug-and-Play (UPnP)
22.1.3
Cautions with UPnP
The automated nature of NAT traversal applications in establishing their own services and
opening firewall ports may present network security issues. Network information and
configuration may also be obtained and modified by users in some network environments.
When a UPnP device joins a network, it announces its presence with a multicast message. For
security reasons, the ZyXEL Device allows multicast messages on the LAN only.
All UPnP-enabled devices may communicate freely with each other without additional
configuration. Disable UPnP if this is not your intention.
22.2
UPnP and ZyXEL
ZyXEL has achieved UPnP certification from the Universal Plug and Play Forum UPnP™
Implementers Corp. (UIC). ZyXEL's UPnP implementation supports Internet Gateway Device
(IGD) 1.0.
See the following sections for examples of installing and using UPnP.
22.2.1
Configuring UPnP
Click
Advanced > UPnP
to display the screen shown next.
See
Section 22.1 on page 277
for more information.
Figure 149
Configuring UPnP
Page 279 / 427
P-2602H(W)(L)-DxA Series User’s Guide
Chapter 22 Universal Plug-and-Play (UPnP)
279
The following table describes the fields in this screen.
22.3
Installing UPnP in Windows Example
This section shows how to install UPnP in Windows Me and Windows XP.
Installing UPnP in Windows Me
Follow the steps below to install the UPnP in Windows Me.
1
Click
Start
and
Control Panel
. Double-click
Add/Remove Programs
.
2
Click on the
Windows Setup
tab and select
Communication
in the
Components
selection box. Click
Details
.
Table 112
Configuring UPnP
LABEL
DESCRIPTION
Active the Universal Plug and
Play (UPnP) Feature
Select this check box to activate UPnP. Be aware that anyone could use
a UPnP application to open the web configurator's login screen without
entering the ZyXEL Device's IP address (although you must still enter
the password to access the web configurator).
Allow users to make
configuration changes
through UPnP
Select this check box to allow UPnP-enabled applications to
automatically configure the ZyXEL Device so that they can
communicate through the ZyXEL Device, for example by using NAT
traversal, UPnP applications automatically reserve a NAT forwarding
port in order to communicate with another UPnP enabled device; this
eliminates the need to manually configure port forwarding for the UPnP
enabled application.
Allow UPnP to pass through
Firewall
Select this check box to allow traffic from UPnP-enabled applications to
bypass the firewall.
Clear this check box to have the firewall block all UPnP application
packets (for example, MSN packets).
Apply
Click
Apply
to save the setting to the ZyXEL Device.
Cancel
Click
Cancel
to return to the previously saved settings.
Page 280 / 427
P-2602H(W)(L)-DxA Series User’s Guide
280
Chapter 22 Universal Plug-and-Play (UPnP)
Figure 150
Add/Remove Programs: Windows Setup: Communication
3
In the
Communications
window, select the
Universal Plug and Play
check box in the
Components
selection box.
Figure 151
Add/Remove Programs: Windows Setup: Communication: Components
4
Click
OK
to go back to the
Add/Remove Programs Properties
window and click
Next
.
5
Restart the computer when prompted.

Rate

3.5 / 5 based on 2 votes.

Popular Zyxel Models

Famous Router IPs
Famous Router Companies
Bookmark Our Site

Press Ctrl + D to add this site to your favorites!

Share
Top