how to change router password cisco

1. Security Configuration of vro Access Control 1. strictly control the administrator who can access the vro. Record Filing is required for any maintenance. 2. do not access the vro remotely. Even if you need to access the vro remotely, we recommend that you use the access control list and high-intensity password control. 3. Strictly control access to CON ports. Specific measures include: A. if you can open the chassis, you can cut off the physical li

Basic configurations of Cisco routers and switches: www.2cto.com Router> \ enter the user mode Router when the vro is started> enable \ type the command to enter the Router mode # \ This display mode indicates that the Router mode has been entered # configure terminal \ type

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) # ip route 0.0.0.0 0.0.0.0 172.16.1.2 configure Static RoutingR1 (config) # ^

-controller) # linecode ami/b8zs/hdb3 (ami-T1, hdb3_e1) Router (config-controller) # cablelength short 133/266 (optional, used if the cable length is less than 655 feet) Router (config-controller) # cablelengh long gain26/-15 (optional, if the cable length is greater than 655 feet, the value is DB gain) Router (config-controller) # line termination 75-ohm | 120-o

Cisco router configuration mode In general, you can configure your router in 5 ways: 1.Console Port connection terminal or running terminal simulation software of the microcomputer; 2.AUX Port Connect modem, connect with remote terminal or computer running terminal simulation software by telephone line; 3. Via the TFTP server on the Ethernet; 4. Adoption of

There are still many things worth learning about the Cisco router configuration mode. Here we will mainly introduce how to enter the detailed steps of the Cisco router configuration mode. In the Cisco router configuration mode, th

products. In addition, large companies must have their own public IP segments. Based on the above considerations, I decided to use the IP Network Browser tool for the range of 210. 224. *. 1 ~~~ 210. 224. *. 254 IP segment scan to check whether a network device of a Cisco router or vswitch is used. It must be noted that IP Network Browser is a tool in the SolarWinds Network management software set. It can

/spine/bin/spine] (change the poll to spine)Settings---->poller---->poller type [spine]Console---->settings---->poller---->maximum threads per process [5]Save11. Add a Scheduled task#crontab-e*/1 * * * * */usr/bin/php/var/www/html/cacti/poller.php >/dev/null 2>1Set to execute every 1 minutes12. Configure Cisco RoutersExcerpt from the network:－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－One, configure the SN

step. Basic configurations of a cisco router: Cisco IOS Software Overview Configure a Cisco router for the first time How to connect to the control port of a cisco Router How to set th

PC that configures the router must also use a valid power supply. Cisco synchronous serial interfaces are commonly used. Different interfaces can be obtained through different cables. Such as RS232 and V.35. In addition, the cables of Cisco synchronous serial interface cables are specially pre-fabricated. The system automatically enters the dialog setup status d

This article describes how to configure a vswitch for a CISCO 3550 router and how to configure access control for a MAC address. In network management, users often encounter this situation: some users violate management regulations and modify their own IP addresses without permission to access restricted resources. Such behavior not only undermines information security rules, but may also cause network comm

The command line port of a cisco router uses a hierarchical structure, which requires logging on to different modes to complete detailed configuration tasks. From a security perspective, cisco IOS divides EXEC sessions into USER mode and privileged mode. Features of the USER mode: In USER mode, only basic monitoring commands are allowed. In this mode, the confi

configuration information in NVRAMCopy run-config atartup config to save the information to NVRAMWrite to save the information to NVRAMErase startup-config clear configuration information in NVRAMShow ip interface briefBanner motd # + Information + # configure the router or switch descriptionDescription + information configuration interfaceVlan database enters VLAN database modeVlan + vlan ID + name create VLANSwitchport access vlan + vlan ID for VLA

router not to run. Here we use the upgrade from VRP1.0 to VRP1.1 as an example of how to upgrade. 1. Router configuration cable one end and the PC serial port with the router's console port connection 2. To establish the use of direct-connected HyperTerminal under WIN95/98, the parameters are as follows: Baud rate 9600, data bit 8, stop bit 1, invalid test, no flow control, VT100 terminal type 3. The s

router configuration mode, enable enhanced IGRP on the networkNetwork specifies a CIDR Block directly connected to the vro.Network-number specifies a directly connected NetworkNo shutdown open a closed Interface Iii. Start with Cisco router command P:Pad starts an X.29 PAD connectionPermit is used to set conditions for a named ip acl.Ping sends ICMP response dat

principle, using a Udpecho request instead of a ICMPECHO request to initiate an attack. While cyber security experts are focused on developing devices that block Dos attacks, they have little effect because Dos attacks exploit the weaknesses of the TCP protocol itself. Properly configured routers can effectively prevent Dos attacks. In Cisco routers, for example, the iOS software in Cisco routers has many

No one liked this, but sooner or later there would be a router crash. All that should be done now is to save the key information in the router memory so as to identify the cause of the router crash and prevent this situation from happening again. To do this, you need to configure the vro to save the core dump information stored on the vro at the time of crash. Ne

. Configure writable Community. The default product writable Community name is private. Switch (config) # snmp-server community private rw 3. Change the SNMP Community password. A. Group devices and enable various Supported SNMP versions Switch(config)#snmp-servergroupqycx123v1 Switch(config)#snmp-servergroupqycx123v2c Switch(config)#snmp-servergroupqycx123v3noauth B. Configure read-only

people at the same time. Therefore, in some Chinese cities, the operator binds the MAC address for the first dialing, when you change the number, you need to call the carrier. The reason is that you can change the network card. Do not say that you cannot dial the number with a vro.Third, do you have a friend who accesses the Internet through a router? You can re

With the development of China's routing industry, its market demand is also increasing. As a leader in the routing industry, Cisco routers have a very high market share. Telnet to the Cisco router for remote management is the choice of many network management, but the data transmitted through Telnet is in plain text, so this login method has a great security risk