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It is very important to know some common knowledge about CISCO routers. Here we mainly explain the CISCO router tutorial, which provides a detailed analysis from configuration to access methods. This document uses Cisco2620 as an example to describe how to configure the vro and remote access, this article discusses how
Initial installation of the CISCO router tutorial
During the first installation, the system automatically enters the Dialog Setup, as prompted on the screen, answer the router name, encrypted super login password, super login password, remote login password, dynamic routing protocol, and the configuration of each inter
Cisco router reset enable password tutorial, ciscoenable
Steps:
1. Restart the vro and press ctrl + Breack when ROM Monitor mode appears on the vro to enter ROM mode, for example:
2. Modify the vro register value, change the original register value 0x2102 to 0x2124, and then run the reset command to restart the device, for example:
3. After the password i
is not protected by the firewall, because the topic of this tutorial is vro, not to teach you how to use the firewall. When you are sure to find a good system, you should find a proxy server that can use port 23, so that your IP address will not be recorded by the router
Recorded. : Find a machine that runs Wingate.
Bytes -------------------------------------------------------------------------------------
Users using Cisco routing, many of them do not pay much attention to doing Cisco router configuration work, in fact this is a very important part, especially for our network security. There are several ways to do Cisco router configuration. The configuration can be done by t
on the vro in turn. You can see that the logon is successful to the vro.
Then, we checked the packet capture result of the sniffer tool, and all the data was encrypted, so we could not see sensitive information such as injection of users and passwords. We can see that using ssh can ensure the security of remote logon to the Cisco router.
Conclusion: In fact, ssh can be used not only for security management
the "connect to use" column, and click OK. In the pop-up "COM1 properties" form, you can easily collect IP traffic without any programming. For security reasons, you can also restrict access to the server's clients ..
2. obtain IP traffic of a cisco Router
After the configuration is complete, turn on the vro power and the startup information of the vro appears.
//redistribution of Direct connect routes to Ospfrouter (config-router) #redistribute static subnets//redistribution of static routes to Ospfrouter (Config-router) #redistribute ripsubnets//re-distributing RIP to ospfrouter# showrrouter#showiproute//3 Direct-attached routes within the routing table, with 1 static, RIP, and OSPF dynamic routes# Link Test PC0 (Command prompt cmd) ping 192.168.3.1//link ping 1
When using a cisco router as an Internet Router, cisco's IP packet filtering function is generally used to count IP traffic. The method is to add the ipaccountingoutput-packets command at each entrance of the cisco router. The cisco
programming, for the sake of security, you can also restrict access to the server's clients. The method is as follows:Access-list 10 permit 202.111_2.5Ip http serverIp http access-list 10
In client 202.112.162.5, use the web download tool wget to periodically collect and clear IP traffic. The method is as follows: # Read IP traffic and store it in the outpu-packets webpage File
Wget -- http-user = admin -- http-passwd = ciscoHttp: //
Many people are not very familiar with the installation and configuration of CISCO routers. It does not matter. Here we will introduce the classic section of the CISCO router tutorial, this gives you a better understanding of vro configurations. This document uses Cisco2620 as an example to describe the configuration a
CISCO Router Network Address Translation (NAT)Tutorial name: Cisco Router Network Address Translation (NAT) objective: to connect all Intranet IP addresses to the Internet using a small number of public IP addresses. Tutorial Intr
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
Cisco router VLan isolation LAN broadcast packet configuration experiment and summary, ciscovlan
1. Tutorial Description: connect to and set the IP address of the PC according to the network topology. PC1 and PC2 are required to be accessed on VLAN 12, while PC3 and PC4 are accessed on VLAN 34, PC1 and PC2 are interconnected, PC3 and PC4 are interconnected, and V
unique to vtysh. You can enter commands that are compatible with and supported by vro vendors (such as Cisco and Juniper. We will use vtysh shell to configure BGP routing in the rest of the tutorial.
Start the vtysh shell command and enter:
# vtysh
The prompt will be changed to this host name, which indicates that you are in vtysh shell.
Router-A#
the exit string, the connection is closed directly.To test this server program, we also need to write a client program:Note that the client program runs out, and the server program will run forever, you must press CTRL + C to exit the program.SummarySocket programming with the TCP protocol is very simple in Python, for the client, to actively connect to the server's IP and the specified port, for the server, to first listen to the specified port, and
", Socket.inet_aton (MCAST_GROUP_IP), socket. Inaddr_any) sock.setsockopt (socket. Ipproto_ip,socket. Ip_add_membership,mreq)#allow port reuse, see a lot of tutorials have no idea what the meaning is, I directly comment out here #sock.setsockopt (socket. Sol_socket, SOCKET. SO_REUSEADDR, 1) #set non-blocking, see a lot of tutorials have no idea what is the use, I directly comment out here #sock.setblocking (0) whileTrue:Try: message, addr= Sock.recvfrom (1024) Print(f'{ti
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