complete the online help and training process.
Using the Cisco SDM smart wizard, you can systematically configure a LAN, wireless LAN and WAN interface, firewall, Intrusion Prevention System IPS, and IP SecurtiyIPSec) VPN to gradually complete the Cisco router configuration. The C
? Because of these unreasonable settings, the wireless router is in an unstable state. Below, the author takes TP-LINKWR641G as an example, a comprehensive introduction to the wireless router settings.
How to configure a Cisco Wireless Router
Before configuring a wireless router
that you need a user and a password to gain access. In addition, we recommend that you use a secret password for your username, instead of a common password. It uses MD5 encryption to encrypt passwords, and greatly improves security. Example: Router (config) # username root secret My $ Password
After the user name is configured, you must enable the port using the user name. Example:◆ Router (config) # line
The original Article is from BlackSun. It is translated in sleep hours. This is a very good article and I am very happy to share it with you!
Warning:
Do not use this to damage the cisco system or access the system illegally. This article is for the purpose of learning. It can only be used for legal actions and cannot damage any system. This article will show you step by step how to use the discovered defects to obtain illegal access. If you break int
systems of Cisco router IOS, which may expose sensitive information. This vulnerability allows a low-level user (for example, a user who does not know the 'enable' password) to use the system to view some information, in theory, this information should be visible only to users who know the 'enable' password. This information includes the access control list and other content. Generally, after logging on to
router security management, and provide users with comprehensive online help and guidance.
The Cisco SDM smart wizard guides you through systematic configuration of LAN, WLAN and WAN interfaces, firewalls, intrusion prevention systems (IPS), and IP Securtiy (IPSec) VPN to gradually complete the router and
Configuration example of cisco router and layer-3 Switch environment, cisco layer-3 SwitchSimple environment configuration instance for cisco router layer-3 Switch
I. network topology:
Ii. configuration command:
1. vro Configuration:
Interface FastEthernet0/0
right of preempt configuration HSRP
4.router (config-if) #standby 2 9 2 indicates hello time, 9 means to hold time
5.router (config) #interface S0
6.router (config-if) #standby track S0 100 Configure the trace port S0 and reduce the port down by 100
7.router#show Standby Brief View the status of HSRP
8.
in 7.05 secsIt168 #
After the network administrator enters the command and press enter, the vro requires that the IP address of the TFTP server be entered. After the Server IP address is correctly entered, the vro also requires the network administrator to provide the name of the configuration file for backing up the cisco r
remote login access.
Routing configuration Mode
Route (Config-router) #
Router Routing protocol
Configuration of the router-related routing protocol into
Interface configuration mode
Route (config-if) #
Interface interface
The interface configuration mode can be used to manage the
connections, use Access list to strictly control access to the address, you can use AAA to set User access control.
8,ios upgrades and backups, as well as backup of configuration files suggest using FTP instead of TFTP. Such as:
Router (Config) #ip FTP username Blushin
Router (Config) #ip ftp password 4tppa55w0rd
Subnet Mask hardware basic Ethernet protocol Network Management
A router is a bridge of a computer network and a core device connecting to an IP network. It can connect different networks, select data transmission routes, and block unauthorized access. Router configuration is not easy for beginners. Take the Cisco
This article describes how to configure the IOS Firewall on a Cisco router. What should we pay attention to when configuring the firewall? The following article provides detailed answers.
Pre-configuration on R1, R2, and R3
R1 (config) # int e0/0R1 (config-if) # ip add 172.16.1.1 255.255.255.0R1 (config-if) # no shR1 (config) #
registerThe value of this 16-bit (2B) configuration register is read from 15 to 0, that is, in order from left to right. Cisco RoutingThe default configuration setting on the device is 0x2102. This means that the 13th, 8th, and 1th bits are set to 1, as shown in table 7-2. Note that everyThe binary values corresponding to bits in a 4-bit group (called a half-byte) are 8, 4, 2, 1, respectively.
Configuration Register 2 1 0 2Bit value 15 14 13 12
environment test)
Router (config) # loop line Remote bad test)
Router (config) # no shut
Router (config) # ip add 10.1.1.1 255.255.255.0
Router (config) # aps working 1 working mode, where 1 is linked with the protection port value)
Rou
confidence of a routing protocol. The lower the ad value, the higher its priority. For routing information between two different routing protocols to a destination, the router first determines which protocol to trust based on the administrative distance.
Experimental Equipment : ROUTER-PT 4 units, PC 3, straight line, crossover line, serial line.Experimental topology :650) this.width=650; "Src="
CISCO PT Simulation Experiment (18) router DHCP server and relay configurationExperimental Purpose :Master the configuration method of router DHCP serverMaster the configuration method of DHCP relay AgentMastering the DHCP protocol and the principle and implementation process of the relayExperimental Background : with the expansion of the company's network, more
A Cisco router is a commonly used routing product in large and medium-sized networks. As a core router, It is the soul of the entire network. If the Administrator is improperly set, the security deployment may be taken over by attackers if it is not in place. In that case, all the networks under it will fall, and the extent of its harm is self-evident.
1. One Sec
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