Netgear C6250 Ac1600 Wifi Cable Modem Router User Manual

Manage the WAN and LAN Network Settings 
81
 AC1600 WiFi Cable Modem Router
Manage the WAN Security Settings
The WAN security settings include port scan protection and denial of service \
(DoS) 
protection, which can protect your LAN against attacks such as Syn flood\
, Smurf Attack, Ping 
of Death, and many others. By default, DoS protection is disabled and a \
port scan is rejected.
You can also enable the modem router to respond to a ping to its WAN (Internet) port. This  feature allows your modem...

Manage the WAN and LAN Network Settings 
82
AC1600 WiFi Cable Modem Router 
7. 
The following table describes the protection and ping options on the WAN Setup page.
FieldDescription
Disable IPv4 Firewall 
Protection IPv4 firewall protection can secure your network against malicious packe\
ts.
To disable IPv4 firewall protection, select the Disable IPv4 Firewall Protection  check box.
By default, IPv4 firewall protection is enabled. NETGEAR recommends that\
 you 
leave the firewall enabled to protect your...

Manage the WAN and LAN Network Settings 
83  AC1600 WiFi Cable Modem Router
The modem router discards incoming traffic from the Internet that is not a response to one of 
your local computers or a service that you specially set up for this purpose (see 
Manage Port 
Forwarding to a Local Server for Services, Applications, and Games on page 166). Instead of 
discarding this traffic, you can let the modem router forward the traffic to one computer on 
your network. This computer is called the default DMZ...

Manage the WAN and LAN Network Settings 
84 AC1600 WiFi Cable Modem Router 
5. Select ADVANCED > Setup > WAN Setup.
The WAN Setup page displays.
6. Select the Disable SIP ALG check box.
The SIP ALG is enabled by default.
7. Click the Apply button.
Your settings are saved.
Manage the Modem Router’s LAN IP Address Settings
The modem router is preconfigured to use private IP addresses on the LAN side and to act as 
a DHCP server. The modem router’s default LAN IP configuration is as follows:
•LAN IP...

Manage the WAN and LAN Network Settings 
85
 AC1600 WiFi Cable Modem Router
6. 
In the IP Address field, enter the LAN IP address for the  modem router.
7.  In the IP Subnet Mask  field, enter the LAN subnet mask for the modem router.
8.  Click the  Apply button.
Your settings are saved.
If you changed the LAN IP address of the modem router, you are disconnec\
ted when the 
changes take ef
 fect.
To reconnect, close your browser, relaunch it, and log in to the modem router at its new  LAN IP address....

Manage the WAN and LAN Network Settings 
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AC1600 WiFi Cable Modem Router 
A login window opens.
3.  T
ype  admin for the user name and type your password.
If you did not yet personalize your password, type password for the password.
4.  Click the  OK button. 
The BASIC Home page displays.
5.  Select  ADV
 ANCED > Setup > LAN Setup .
The LAN Setup page displays.
6.  In the 
Address Reservation section, click the  Add button.
7. In the IP Address field, type the IP address to assign to the device....

Manage the WAN and LAN Network Settings 
87  AC1600 WiFi Cable Modem Router
Change a Reserved IP Address
You can change the settings for a reserved IP address.
To change a reserved IP address:
1. Launch an Internet browser from a computer or WiFi device that is connected to the 
network. 
2. Type http://www.routerlogin.net.
A login window opens.
3. Type admin for the user name and type your password.
If you did not yet personalize your password, type password for the password.
4. Click the OK button....

Manage the WAN and LAN Network Settings 
88 AC1600 WiFi Cable Modem Router 
The BASIC Home page displays.
5. Select ADVANCED > Setup > LAN Setup.
The LAN Setup page displays.
6. In the Address Reservation Table, select the radio button next to the reserved address that 
you want to remove.
7. Click the Delete button.
The reserved address is removed from the Address Reservation Table.
8. Click the Apply button.
Your settings are saved.
Manage the IPv6 LAN Settings
You can manage the IPv6 LAN settings only...

Manage the WAN and LAN Network Settings 
89
 AC1600 WiFi Cable Modem Router
In the previous figure shows, the System Delegated Prefix
 field shows an IPv6 address 
and prefix that were delegated by the cable Internet provider.
Note: If the modem router does not obtain an IPv6 address, all options onscreen 
are masked out.
6.  Select 
an  IP Address Assignment  radio  button:
•Use DHCP Server .
  The modem router assigns IPv6 addresses to the devices on your 
home network (the LAN) through a DHCP server....

Manage the WAN and LAN Network Settings 
90 AC1600 WiFi Cable Modem Router 
Change the Modem Router’s Device Name
The modem router’s default device name is C6250-100NAS. This device name displays in a 
file manager when you browse your network.
To change the modem router’s device name:
1. Launch an Internet browser from a computer or WiFi device that is connected to the 
network.
2. Type http://www.routerlogin.net.
A login window opens.
3. Type admin for the user name and type your password.
If you did...