User's Manual

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N450 Wireless Router WNR2500
Forwarding / Port Triggering screen (see Set Up Port Forwarding to Local Servers on
page 93 and Set Up Port Triggering on page 96). Instead of discarding this traffic, you can
have it forwarded to one computer on your network. This computer is called the default DMZ
server.
 To set up a default DMZ server:
1. Select Advanced > Setup > WAN Setup.
The W
AN Setup screen displays.
2. Select the Default DMZ Server check box.
3. T
ype the IP address.
4. Click the Apply
button.
Change the MTU Size
The maximum transmission unit (MTU) is the largest data packet a network device transmits.
When one network device communicates across the Internet with another, the data packets
travel through many devices along the way. If any device in the data path has a lower MTU
setting than the other devices, the data packets have to be split or fragmented to
accommodate the device with the smallest MTU.
The best MTU setting for NETGEAR equipment is often just the default value, and changing
the value might fix one problem but cause another
.
WARNING:
An incorrect MTU setting can cause Internet communication
problems such as the inability to access certain websites, frames
within websites, secure login pages, or FTP or POP servers.
Leave MTU unchanged unless one of these situations occurs:
• Y
ou have problems connecting to your ISP or other Internet service, and technical
support of either the ISP or NETGEAR recommends changing the MTU setting.
These
web-based applications might require an MTU change:
- A secure website that does not open, or displays only part of a web page
- Y
ahoo email
- MSN portal
- America Online’
s DSL service
• You use VPN and have severe performance problems.
• You used a program to optimize MTU for performance reasons, and now you have
connectivity or performance problems.