Cisco router ip nat command ip natip nat inside destination ip nat inside source list ip nat inside source static ip nat outside source list ip nat outside source static
Article Title: How to restrict a certain number of IP addresses to connect to the Internet on a linux router while preventing IP theft. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
In some systems, we want several
Before using the 3G router, make sure that the 3G Internet card is plugged into the computer and can be unplugged successfully. If the 3G card directly connected to the computer can not dial the success, please contact the 3G operator (may be 3G signal coverage or the existence of arrears of fees and other issues).
If you are using a 3G Internet card that is not in a compatible list of routers, the following may occur:
1, unreco
dialog box, select the "use the following IP Address" option, then we can set the IP address of this PC.
The factory IP address of the Broadband Router is 192.168.0.1 or 192.168.1.1, so we need to set the configured PC and the Broadband Router in the same network segment. H
Reference Original address: http://www.cnblogs.com/JuneWang/p/3917697.htmlIP Address:IPv4IP address = network number + host numberSubnet Mask:A subnet mask is a basis for determining whether the IP addresses of any two computers belong to the same subnet . The simplest understanding is that the respective IP addresses of the two computers and the subnet mask after the and operation, the result is the same,
that the vroadsl has been connected, we will start the ADSL Broadband Router! How to Set it? Generally, a home-level router is set on a web page. What is its "home page" address? Next, operate this computer, right-click "network neighbor properties", and double-click "Local Connection Properties". The local connection Status dialog box is displayed. Click "support" to see the
in network settings, such as multiple routers in series or to strengthen the router security settings, you will be changed to repair the default gateway. In general, the modification of gateways are required to enter the router settings to operate, under the small set up mainly for everyone to introduce the next gateway how to set up, there is a need to use frien
add default gw 140.115.1.254 metric 1
^
Run rc. inet1 or reboot after the Gateway is connected to the external server. you can use the route command to check whether the setting is correct. The following is the output of the Router Value Line route:
Destination Gateway Genmask Flags MSS Window Use Iface
140.115.50.160 * 255.20.0000u 1436 0 234 eth1
140.115.0.0*255.255.0.0 U 1436 0 29125 eth0
.
If you are using ADSL, you should set your Mercury wireless router IP address and gateway address to be not in the same network segment, so you cannot access the Internet, because the router does not know where the gateway is, therefore, you must add a static route to the vro so that you can access the internet. If you have any questions, add QQ, first, you do
Vroipip settings have previously been introduced to you. Today, we try again to better understand it and gain more in-depth access to it. Recently, many netizens have asked questions online, but the answers are not uniform.
How do I configure a router Ip?
We now two bedroom together with 4 m broadband, bought an 8-hole TP-LINK router
the IP address through the DHCP service:
A. On the IP address page of the TCP/IP attribute, select "automatically get IP Address.B. do not set any value for the Alpha router on the gateway page.C. Select disable DNS on the DNS configuration page:
Method 2: manually configur
This article describes the methods for setting up static IP under Windows XP, Windows 7, and Windows 8 systems, and before setting this up, users need to know their network's default gateway address, DNS server address, which can be viewed on the router.
Step one: Get the default gateway and DNS server address
No
, because the upper-level gateway will regard it as illegal and refuse to provide services.
4. Modify the/etc/inet/netmasks File
If the vro is connected to a subnet, modify/etc/inet/netmasks and enter the subnet network number (such as 129.9.0.0) and Shield number (such as 255.255.255.0 ).
Ii. Routing Protocol Selection
Static or dynamic routing protocols such as RIP and RDISC can be used ).
When dynamic routing protocol is selected, you can leave the/etc/defaultrouter file blank. The
The so-called vro IP address, as the name implies, is the identifier of the vro body, just like the house number, to let the Data know from where to where, if the vro IP address is set incorrectly, then there will be problems with the network. How can we correctly set the router IP address? Here we will mainly introduc
packets to pass through by default. The second method modifies the default value of the router, change it to the same default as the CISCO device to block all packets.
1. Add ACL rules directly
After setting all the ACL statements on the Huawei device, use "rule deny ip sou
The market demand for Cisco routers is still very high, so I studied the knowledge about the default password of Cisco routers and shared it with you here. I hope it will be useful to you. The following are some default initial IP addresses, user names, and passwords used for Factory installation of ADSL, which must be known for debugging.
There are three method
does not have to worry about an IP address that has the same name as the Internet, because a superior gateway will view it as illegal and refuse to give service. 3lian.com 4. Modify/etc/inet/netmasks file If the router is connected to a subnet, you should also modify the/etc/inet/netmasks and fill in the local network number (such as 129.9.0.0) and the mask number (for example, 255.255.255.0). Two, r
, the original primary IP address is deleted, sorted by the configured time, and the first configured IP address is increased from the primary IP address. When the slave IP address is configured, if there is no IP address on the interface, the
or WAN LEDs are not lit, check to see if the physical connection is good, such as no network cable or network cable and interface bad contact.
Second, set up the router static IP address Internet
1, in the browser to enter the router LAN port IP address, in the pop-up box correctly fill in the router's management us
----192.168.1.6, the subnet mask is the same, are 255.255.255.0. Assuming the LAN router IP address is 192.168.1.1, the default gateway for setting 5 computers is 192.168.1.1.
If you need to share the Internet after your local area network is established, follow these steps:
DNS is set up according to the local DNS address, which can be found after the
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