cisco 3745 router

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Cisco network experiment via Telnet access router

:(1) Step 1: Configure the Router Ethernet interface IP address(2) Step 2: Configure the router password(3) Step 3: Access the router via TelnetCommands for the relevant steps:Configure the Router Ethernet interface IP address (enter the privileged mode, global mode, interface mode, and configure the Ip-> activation in

Hacker BACKDOOR: Cisco router Tcl script 2nd tests

Cisco router Tcl script backdoor 2nd tests Author: Vic The security of Cisco routers is certain. Password verification is required for remote login. The Cisco passwords are encrypted in the following ways:1 not encrypted, plaintext display 650) this. width = 650; "border =" 0 "alt =" "src =" http://img1.51cto.com/attac

PPPOE on Cisco router

-Negotiate with(can be automatically negotiated or manually configured, the routing protocol cannot be transferred at both ends in the case of Autonegotiation)4 , client (config-if) #ipmtu 1492-------------------- mtu value because pppoe data in encapsulation, A pppoe 8 5 , Client (config-if) #encapsulationppp------------- encapsulated into PPP6 , Client (config-if) #dialer pool7 , Client (config-if) #pppauthentication chap callin8 , Client (config-if) #pppchap hostname admin19 , C

Configuring Cisco router-specific time restarts

method One: Router1#reload in 20Reload scheduled for 11:33:53 EST Sat Feb 1 2003 (in minutes) Proceed with reload? [Confirm] method Two:router1#reload at the 2Reload scheduled for 14:00:00 EST Sun Feb 2 2003 (in hours and minutes) Proceed with reload? [Confirm] Configuring Cisco router-specific time restarts

A Cisco router is detected infected with a secret backdoor.

A Cisco router is detected infected with a secret backdoor. Security company FireEye researchers reported that backdoor programs called SYNful knock were found on 14 Cisco routers in 4 countries. Cisco has confirmed this. The attack does not take advantage of the vulnerability of the product itself, but requires valid

How to Prevent DDoS on a Cisco Router

. RPF reverse transmission path forwarding) is an input function activated on a network interface or sub-interface to process packets received by the router. It is very important to enable the CEF function on the vro, because RPF must rely on CEF. Unicast RPF is included in Cisco IOS 12.0 and later versions that support CEF, but does not support Cisco IOS 11.2 or

Cisco router network address translation (NAT)

Experiment Name: Cisco router network address translation (NAT)Experimental purpose: To achieve all intranet IP to use a small number of public IP network connection to the InternetExperiment Introduction:With the help of NAT technology, when the intranet private address sends packets to the router, the private address is converted to a legitimate public IP addre

Control Remote Cisco router to switch Telnet to SSH

supports SSH. log on to your vro or vswitch and check whether you have loaded an IPSec IOS image that supports SSH. In our example, we will use the Cisco IOS command. Run the following command: Router> Show flash This command displays the name of the loaded IOS image. You can use the result to compare the list of supported features of your supplier. After you verify that your device supports SSH, make sure

Research and Practice of Cisco Series Router password recovery (1)

1. Password Recovery Principle 1) The Cisco router stores several different configuration parameters and stores them in different memory modules. The memory of Cisco Series routers includes ROM, Flash memory, RAM, immutable RAM, and Dynamic memory DRAM. See table 1 ). Generally, when a vrodram starts, it first runs the program in ROM, conducts system self-check

Best Choice for home wireless routing WRT54GC Cisco Wireless Router

The rapid development of wireless networks has also promoted the wide application of wireless routers. At present, the market demand is also very high. Here we recommend a Cisco wireless router, cisco's Linksys wireless products have always maintained Cisco's high quality. As a result, this WRT54GC Cisco Wireless Router

How to configure a Cisco router using a script

ExploitationScriptConfigureCisco router configurationBefore that, you must specify the operations you want to perform, execute those commands, and then write scripts. I want to back up the running-configure configuration. Of course, the device has been configured and the tftp server is ready. The Cisco router configuration is as follows: BT Wireless Network crac

Describes the details of a Cisco router simulation software.

I want to introduce a Cisco router simulation program to you today. I hope that a friend who is looking for software can take a look at this article to avoid some unsuitable factors after you download it. Software type: domestic software, authorization method: Shared Software, interface language: Simplified Chinese, Software size: 32.5 MB, file type :. exe, running environment: Win2003, WinXP, Win2000, Win9

cisco-Router Switch password recovery

and a switch are connected with the console lineHow it works: Switch password recovery fundamentals: Change the Config.text file name in the switch to a different file name, and then enter the configuration mode to change the password, and finally restore the Config.text file nameSteps:1. Power off first2. Power off while holding down the mode key on the switch until the display light on the switch is no longer flashing (5~10s), then release3. At this point, enterSwitch:flash_init (Initialize F

Cisco router SSH logon Advanced Configuration

Cisco router SSH Login Advanced Configuration enablewww.2cto. comconfigureterminalenablesecretciscoservicepassword-encryption enable password encryption service aaanew-modelaaaauthenticationloginAAA_LOCALlocalusernamesunchaosecretcicsousernamecocoesec Cisco router SSH logon Advanced Configuration enable www.2cto.com co

Cisco router configuration manual Virtual LAN (VLAN) routing

Cisco router configuration manual Virtual LAN (VLAN) routing 1. The main network technology we currently use when constructing an enterprise network is generally based on exchange and virtual networks. The exchange technology changes shared media to exclusive media, greatly improving the network speed. The Virtual Network Technology breaks the restrictions of the geographical environment. without changing t

Cisco router basic knowledge-storage details

Cisco router has become a commonly used network device, but we are not very clear about its storage classification. Here we will introduce it in detail. Memory category: 1: RAM: Random Access to memory, equivalent to computer memory 2: ROM: read-only memory. Some microcodes used to start and maintain the router are resident in the ROM. 3: FLASH Memory, equiva

Principles and configurations of pap and chap for ppp authentication (Cisco router)

: single two-way authentication: www.2cto.com 2.2, CHAP authentication: CHAP: Challenge Handshake Authentication Protocol, full name: challenge Handshake Authentication Protocol. CHAP verifies the identity of the authenticated end through a three-way handshake. It is completed when the initial link is established. To improve security, it is periodically verified after the link is established. CHAP is safer than PAP because CHAP does not send plain text online, but instead sends a random number s

Typical Cisco router VPN configuration (1)

This article uses VPN technology to achieve interconnection between two parts of the network, simulate ISP, close to practicality, the article mainly shows us the specific operation steps, mainly the input of basic commands. In this experiment, we use the Cisco 2600 router and VPN technology to achieve the network interconnection between one branch and two parts. To stay close to practicality, we still use

Cisco Router uploads iOS (ii)

...Writing monlib sectors........................................................................................................Monlib Write complete Format:all system sectors written. Ok...Format:operation completed successfully. Format of Flash:completeProgram load complete, entry point:0x8000f000, size:0xcb80(5) TFTP to see if iOS upload is complete.(6) Rommon 8 > Reset//Restart routerCisco

Cisco router IOS upload and download

Cisco router IOS upload and download 1. Prepare a console line and a network cable. The connection cable is connected to the console port of the computer. The network cable is connected to the computer and the F0/0 port of the router. (Only F0/0 can be used. The router has no system, the IP address configured for the

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