cisco 3550

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. 1. Security Testing I installed sniffer loc

CCNA Study Notes (ii)--Initial knowledge of Cisco devicesIn the previous chapter we recognized the fundamentals of networking, and now we are formally exposed to Cisco devices.1, first we first understand the main components of a Cisco device:ROM (read-only memory): mainly save the post software, save the router boot boot program.RAM (random memory): loss of data

Fast Ethernet and Gigabit Ethernet line cards The Cisco Catalyst 4500 series scalable, modular, and high-density switches provide superior combined second-layer switching and intelligent services, which enable network control and sustainability. These switches provide a wide range of Fast Ethernet and Gigabit Ethernet line cards, including the desktop, branch backbone and servers for enterprise and commercial Exchange solutions, and the fiber and cop

After the update is completed today, a long Cisco router command is divided into three articles, which will be helpful for users to read and hope that everyone can get the result from it, I believe these articles will certainly help some people. I. Starting with the Cisco router command M:Mbranch traces the multicast address down to the terminalMedia-type defines the Media typeMetric holddown isolates the n

With the development of China's routing industry, its application is also more extensive, especially the application of routers and firewalls. Here we mainly explain the security configuration of NetEye firewall and Cisco router. Firewall has become a key part of enterprise network construction. However, many users think that Cisco routers already exist in the network and some simple packet filtering functi

Cisco NX-OS MTS Remote Denial of Service Vulnerability (CVE-2014-2201) Release date:Updated on: Affected Systems:Cisco NX-OS 4.2 (6)Cisco NX-OS 4.2 (4)Cisco NX-OS 4.2 (3)Cisco NX-OSDescription:--------------------------------------------------------------------------------Bugtraq id: 67578CVE (CAN) ID: CVE-2014-2201Cis

Release date:Updated on: Affected Systems:Cisco IOS xr4.2Cisco ios xr 4.1.2Cisco ios xr 4.1.1Cisco ios xr 4.1.0Cisco ios xr 4.0.4Cisco ios xr 4.0.3Unaffected system:Cisco ios xr 4.2.1Description:--------------------------------------------------------------------------------Bugtraq id: 53728Cve id: CVE-2012-2488 Cisco ios xr is a next-generation network and Cisco carrier routing system. Implementation Vulne

Cisco AsyncOS Denial of Service Vulnerability (CVE-2016-1382)Cisco AsyncOS Denial of Service Vulnerability (CVE-2016-1382) Release date:Updated on:Affected Systems: Cisco AsyncOS Description: CVE (CAN) ID: CVE-2016-1382The Cisco AsyncOS operating system improves the security and performance of

Maybe many people do not know the actual application of the NetEye firewall and the Cisco router. Next we mainly analyze the security problems of the NetEye firewall and the Cisco router. Firewall has become a key part of enterprise network construction. However, many users think that there are already routers in the network and some simple packet filtering functions can be implemented. So why should we use

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. Next, I will tell you what is the core dump information, what is its usefulness, and how to save these files that are very important for

Using the Cisco router configuration can easily implement VoIP, So I studied the statements related to the Cisco router configuration and shared them here, hoping to be useful to everyone. VoIPVoice over IP) is a technology that transmits voice over the Internet. It has grown with the development of Internet technology. It integrates voice technology with network transmission, and gives full play to the rol

The Cisco switch password recovery security and the steps that should be followed. There are many things worth learning about the Cisco switch password recovery. Here we mainly introduce how to use the Cisco switch password recovery to ensure the security of the switch, including configuration environment and other knowledge points. Recently, the OS of a vswitch

Interconnection Between ZTE ZXR10 and Cisco RoutersI recently encountered such a situation in my work, because a network needs to be activated temporarily, and the central node is far away from each access unit, so the existing optical transmission network is used to connect the router. The central node is ZTE ZXR10, And the access unit is Cisco's 7200 series. The 155M channel is activated. After the channel is called, device Debugging starts. POS por

Open-source Metasploit Framework and commercial Metasploit products provide the security evaluation function for network devices. This article describes how to use the latest version to perform penetration testing for Cisco IOS, open-source frameworks need to add independent modules and support libraries. commercial products already include these modules, so you can start penetration testing more quickly, the following screen shows a successful penetr

Introduction to CISCO router AAA and related routing configuration cisco aaa www.2cto.com 3A concept: authentication authorization Accounting accountingcisco provides a variety of 3A services for routers and switches: 1. Self-contained AAA router/NAS self-contained AAA service NAS (Network Access Server) 2. Contact the AAA service on the cisco secure acs router/N

Cisco routers use a lot of users, at the same time there will be many problems, the password is forgotten or lost users are very common problems, so I studied the Cisco router password recovery of two methods, here to take out and share with you, hope for everyone useful. When a Cisco router forgets or loses the enable password, there are two ways to recover, dep

Cisco routers use a lot of users, at the same time there will be many problems, the password is forgotten or lost users are very common problems, so I studied the Cisco router password recovery of two methods, here to take out and share with you, hope for everyone useful. When a Cisco router forgets or loses the enable password, there are two ways to recover, dep