When we save the execution result of a command to a variable, we might think that the variable is stored in plain text.However, in fact PowerShell will save the text as an element in each row as an array. If the return value of a command has more than one result, PowerShell automatically stores the result as an array.
PS c:powershell> $IPcfg =ipconfig
PS c:powershell> $IPcfg
Windows IP Configuration
Ethernet Adapter Local area Connection:
connection-specific DNS Suffix.: * * *
link
.......: \ n \ nthe tunnel adapter ISATAP. {7f17396e-53db-47a4-bd5c-9eaddc5e9fac}:\n\n MediaBody state ............: Media has been disconnected \ nthe connection specific DNS suffix .... : \ n \ nthe tunnel adapter Teredo tunneling pseudo-interface:\n\n Connection-specific DNS suffix....: \ n IPv6 Address ............:2001:0:9d38:6ab8:2882:ac2:49ed:92f9\n Local link IPv6 address ... : fe80::2882:ac2:49ed:
authorization provide security assurance for personal communication on the company's Internet. 1.3.1 Tunneling)1.3.1.1 introduction to tunnel technologyVPN is a networking method on the surface, which has many advantages over a leased line network. In VPN, a so-called "Tunnel" technology can be used to transmit data groups through public routing networks, such as Internet networks or other commercial networks. Here, the proprietary "Tunnel" is simil
1. Install miredoRun the following command on the terminal:Sudo apt-Get install miredo2. Modify the IPv6 settings of the firewallOpen the UFW configuration file with the root permission: "/etc/default/UFW", find the "IPv6 = No" line, and change it to "IPv6 = yes ".3. Modify the hosts fileComplete hosts file please open http://docs.google.com/View? Id = dfkdmxnt_61d9ck9ffq, paste the content to the end of the "/etc/hosts" file, and save it.4. Restart the networkThe sudo invoke-rc.d networking res
1 Introduction
With the enlargement of the scale of university running, the new (sub) campus spread to the wireless network construction and management put forward higher requirements. VPN technology can not only build a unified wireless network management platform, but also improve the security of wireless campus network.
2 VPN Overview
VPN (Virtual private network) is the use of tunneling technology and encryption, identity authentication and oth
VPN technology detailed (middle)
Lu Xiaopo
Tunneling Technology Basics
Tunneling is a way of passing data between networks through the use of the Internet infrastructure. Data (or payload) that is passed through a tunnel can be a data frame of a different protocol (this word is incorrect) or a package. The tunneling protocol encapsulates the data frames or packa
existing IP Server Load balancer technology, Network Address Translation is used to construct a group of servers into a high-performance, high-availability virtual server, we call it VS/NAT technology (Virtual Server via Network Address Translation). This method is used in most commercialized IP Server Load balancer schedulers, for example, Cisco's LocalDirector, F5's Big/IP, and Alteon's ACEDirector. Based on the analysis of the disadvantages of VS/NAT and the asymmetry of network services, we
Introduction of tunnel technology and L2TP tunnel
There are many types of tunneling protocols, and different tunneling protocols work at different TCP/IP layers
Tunneling Technology (tunneling)
The basic process of tunneling technology is to encapsulate the data (which ca
. ThisA physical switch can be used as a switch for multiple logic.(2) Security of the network. Different VLANs cannot communicate directly, which eliminates the security of broadcast information.(3) Flexible management. Changing the network to which the user belongs does not have to change ports and wires, just change the software configuration.Second,Vxlan IntroductionWhat is VxlanVxlan Full name Virtual Extensible LAN, is an overlay network technology or
security system. Also on the network, the advantages and disadvantages of various VPN protocols are benevolent, wise, and wise. For the purpose of use, many technical staff, including access control, security, and ease of use, flexible expansion and other aspects, weigh the advantages and disadvantages, it is difficult to choose; especially in the VOIP voice environment, network security is particularly important, so more and more network calls and voice gateways support VPN protocol.
I. PPTP
VPN (Virtual Private Network) is no longer a simple encrypted access tunnel, it integrates multiple functions such as access control, transmission management, encryption, route selection, and availability management, and plays an important role in the global information security system. Also on the network, the advantages and disadvantages of various VPN protocols are benevolent, wise, and wise. For the purpose of use, many technical staff, including access control, security, and ease of use, fl
call the virtual IP address) on the.?? Server Pool/realserver, a set of servers that actually perform customer requests, typically have web, MAIL, FTP, and DNS services.?? Shared storage, which provides a shared storage area for a server pool, makes it easy to have the same content for the server pool and provide the same service.LVS Load Balancing mode: Virtual Server via Network Address translation NAT (Vs/nat)?? Vs/nat is one of the simplest ways, all realserver only need to point their gate
Main points: 1. The cluster structure of LVS can be divided into two parts: the front-end load balancer (called the director) and the back-end real server (known as genuine server). The director of the cluster front-end dispatches requests from outside to the cluster back-end different real servers to execute. Real server is responsible for truly providing a wide range of application services, such as Web, FTP, mail, and so on. The number of real servers can be increased and reduced according to
First of all, PerformanceCounter is divided into categories, each category corresponds to different types of resources, generally have "Processor", "IPv6", what ... There is a list of all the types below:
View Plain
Thread
RAS Total
TCPv6
TCPv4
Paging File
Sqlserver:latches
IPsec AuthIP IPv4
MSDTC Bridge 4.0.0.0
IPsec AuthIP IPv6
. NET CLR Data
WF (System.workflow) 4.0.0.0
Synchronization
Processor
Security per-process Statistics
MSDTC Bridge 3.0.0.0
Generic IKEv1, AuthIP, and IKEv2
Database ==>
, so that more people have the opportunity to build their own clusters.
LVS provides three forwarding mechanisms (Traffic forward mechanism) and four load-balancing methods.
Traffic forward Mechanism)
Three different forwarding mechanisms create an LVS host
Nat virtual host virtual server via Network Address TranslationIP tunneling virtual host virtual server via IP tunnelingDirect routing virtual host virtual server via direct routingA server Load
PPTP, L2TP, IPSec, SSLVPN, and other Protocols define and distinguish between VPN (Virtual Private Network). So far, it is no longer a pure encrypted access tunnel, it integrates multiple functions such as access control, transmission management, encryption, route selection, and availability management, and plays an important role in the global information security system. Also on the network, the advantages and disadvantages of various VPN protocols are benevolent, wise, and wise. For the purpo
IP Virtual Server Software IpvsIn the implementation of scheduler technology, IP load Balancing technology is the most efficient. In the existing IP load balancing technology, a set of servers are made up of a high-performance, high-availability virtual server through Network address translation (Addresstranslation), which we call Vs/nat technology (virtual server via Network addresstranslation), most commercially available IP load Balancer Scheduler products Use this method, such as Cisco's Loc
1. Why does Cisco push the second-tier tunneling protocol, rather than the third-tier tunneling protocol?
Both options are available from Cisco. Cisco did not highlight that one. The second-tier tunneling protocol is primarily used to access VPN schemes, while the third-tier tunneling protocol provides VPN support for
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