cisco ssh configuration example

CentOS SSH installation and configuration sshlinuxSSH is short for SecureShell, developed by the IETF Network team (NetworkWorkingGroup); SSH is a security protocol built on the application layer and transport layer. Traditional network service programs, such as FTP, POP, and... centOS SSH installation and

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

Although the 12 series AP has been eliminated, but like our company with no money for 10 years but still in use, fortunately it has the value of learning, or can be seen from the 12 series of APS some Cisco deployment of wireless ideas.First spit trough a bit of the domestic often said fat, thin ap of this argument, because when using Thin/thick mode to Google, often do not search the results, so first to tidy up the fat and thin what is it?Fat AP, to

Configuring the "/etc/ssh/ssh_config" fileThe "/etc/ssh/ssh_config" file is a OpenSSH system-wide configuration file that allows you to change the way the client program runs by setting different options. Each line of this file contains a "keyword-value" match, where "keyword" is ignored and case-sensitive. The most important keywords are listed below, with the M

There are many VPN products on the Cisco ASA Web VPN configuration market and their technologies are different. For example, in the traditional IPSec VPN, SSL allows the company to achieve more remote users to access the VPN in different locations, this service enables more network resources to be accessed and has low requirements on client devices, reducing the

The port Mapping method enables access to specific port services from the Internet to the local area network internal machines. For example, the machine you are using is in a LAN connected to the Internet, all the services you open on the machine (such as FTP), by default, the outside world can not access. This is because your IP is the LAN internal IP, and the outside can access only the server you are connected to the IP, because the entire LAN on t

Example of Git repository server SSH Authentication Git provides three solutions for user management and management: If everyone in the team needs to have the write permission on the repository and cannot create an account for everyone on the server, providing SSH connections is the only choice. We assume that the server used to share the repository has installed

from the Intranet Restart SSH After modifying the SSH configuration file, you must restart the SSH service to make the new settings take effect. Root @ sample ~] #/Etc/rc. d/init. d/sshd restart SSH server Stopping sshd: [OK] Starting sshd: [OK] restart

: 192.168.0. add this line by using the dig command. Only SSH connection requests from the Intranet can be restarted. After modifying the SSH configuration file, you must restart the SSH service to make the new settings take effect. [Root @ sample ~] #/Etc/rc. d/init. d/sshd restart the

want to initialize the switch, you need to enter the Privileged EXEC mode. Enter setup in the command prompt symbol to start the initialization operation.The Privileged EXEC mode is introduced just now. In this case, we need to talk about several modes of machine change. Different modes can execute different operation commands. First, we need to talk about two basic modes.For the sake of security, CISCO divides an operation session into two different

, because the protocol of this tool uses the RSA/DSA encryption algorithm. This tool is secure for Remote Management in Linux. Telnet is put on use in Linux because it is insecure. A simple explanation of the "Public/Private Key" authentication method: first, create a pair of public/private keys on the client (Public Key File :~ /. Ssh/id_rsa.pub; private key file :~ /. Ssh/id_rsa ). Then put the public key

5. Case Study (1) pixpppoe dialing configuration pixfirewall # shrun: SavedPIXVersion6.2 (2) example. 2kyouencryptedpasd2kfqnbnidi. 2 KYOUencryptedh 5. Case Study (1) configuration of pix pppoe dialing pixfirewall # sh run: Saved PIX Version 6.2 (2) nameif ethernet0 outside security0 nameif ethernet1 inside security100 enable password 2KFQnbNIdI. 2 KYOU encrypted

Cisco 3750 switch stack configuration points 3750 stack is a real stack, the Catalyst 3550 series uses StackWise technology, it is an innovative stack architecture, A 32 Gbps stack interconnection is provided to connect up to nine switches and integrate them into a unified, logical, and optimized device for convergence, in this way, customers can deploy voice, video, and data applications with greater confi

, dynamic address translation, and multiplexing dynamic address translation. The following example uses a Cisco router.1. Static address translationStatic address translation performs one-to-one conversion between the internal local address and the internal legal address, and specifies the legal address to which the conversion is required. If there are WWW servers or FTP servers in the internal network that

parameter settings are just an example. You should change the settings based on your environment. 2. Modify the read and write permissions of the sshd server configuration file/etc/ssh/sshd_config.To set read-only permissions for all non-root users to prevent unauthorized users from modifying sshd service security settings. Chmod644/etc/

. 4. Send log information to a telnet sessionStep 1: configure a host inside the PIX to allow Telnet to the PIXA. Enter the following command:Telnet ip_address [subnet_mask] [if_name]For example, if a host has the IP address 192.168.1.2, the command is:Telnet 192.168.1.2 255.255.255.255B. Set the idle time for a telnet session. The default value is 5 minutes. The recommended value is 15 minutes.Telnet timeout 15Step 2: Start a telnet sessionStep 3: p

In order to manage a network, the network grasping the packet Analyzer is essential, but now is no longer the hub era, grab bag is not so easy, but there is always a way to mirror the port, the other port data copy to the port you specify, so you can grab the bag. Today is not about grabbing bags, It is mainly about how to configure the Cisco switch mirroring port to prepare for the grab package. Connect the switch with the control line, turn on Hype

NAT configuration instance for cisco router with port ing If the ISP provides many IP addresses, you can use NAT to map an external address to each server. However, if it is not the case (for example, if it is only two times), there are four servers in the Intranet that need to provide external services, one for Intranet address translation and the other for prov

Configuration of single-arm routing and DHCP for Cisco devicesIn this experiment, we will configure single-arm routing and DHCP to enable the PC to automatically obtain IP addresses and achieve network-wide interconnection. Tutorial steps: 1. configure the IP address and gateway of the PC. add different VLANs to the vswitch and divide different network segments for the PC. 3. configure a single-arm route to

directory.To learn more, you can refer to the SSHFS tutorial.X11 graphical interfaceIf now you want to run a GUI program on the remote host, SSH has helped you to think of it! Using the previously mentioned SSH basic command plus parameter-X to connect to the remote host can turn on the X11 forwarding function. You may feel no difference after logging in, but when you run a graphical interface program you