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What is port mapping?
Port mapping is also called Port forwarding, and some are called NAT, virtual server. Port mapping process just like your home in a Community B building room 2410, your friends to find you, to find the community doorway, do not know where you live whic
without tag;In practice, various connection methods are implemented according to the access, Trunk, and hybrid properties of the device ports. The application of port attributes is also far beyond the simple VLAN member interconnect, especially our division, with Port properties to implement some relatively complex functions, such as Isolated-user VLAN, multicast VLAN.Principles of processing 3.3 Tag/untag
Port mappings are also called port forwarding, virtual servers, and different broadband routers are named differently. A computer in the intranet needs port mapping to be on the Internet to open up services or receive data.
Port mappings are divided into dynamic and
Linux port ing tool RINETD and port rining rinetd
Rinetd, a simple and easy-to-use tool in Linux, implements port ing, forwarding, and redirection.Official Website address http://www.boutell.com/rinetd
Software DownloadWget http://www.boutell.com/rinetd/http/rinetd.tar.gz
Unzip and installTar zxvf rinetd.tar.gzMakeMake
Rtcp. py works with lcx to forward port 3389, which is much faster than socks reverse proxy on port 80.
Only port 80 (aspx webpage) is mapped to an intranet server ).
Originally, I wanted to use regeorg as a Web page socks proxy. The result was very slow.
Now it is found that the single port
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In the programming of socket server applications in windows, the following statements may be compared:S = socket (af_inet, sock_stream, ipproto_tcp );Saddr. sin_family = af_inet;Saddr. sin_addr.s_addr = htonl (inaddr_any );BIND (S, (sockaddr *) saddr, sizeof (
An intranet server was encountered and only 80 ports (ASPX Web pages) were mapped.Originally wanted to use regeorg to do a Web socks agent, the results of the speed is odd slow.Now found that the single port forwarding is good, 3389 turn out the screen is still able to accept.So I uploaded lcx to do the forwarding.Which public network machine to accept it? Choose Linux instead of win, because win will proba
IIS Tomcat shares port 80 and port iistomcat80
Why is there such a demand,
The reason is,
The company has A Java web project. On another server A, the boss has recently emerged and wants to merge it into server B of this stable point, server B uses IIS to host the asp.net website,
What should we do? Stick to your head and find various solutions on the Internet:
Solution 1: isapi_redirect
I tried this met
ingCommandPurposeApply port forwarding ing to one or more target ports on an SSR or to traffic specified byACL profile.FormatPort processing ing Monitor-port target-port | target-profile name>ModeConfigureDescriptionThe port processing ing command allows you to monitor via
Introduction to Cisco Port Channel)Port trunking is used to bind multiple low-bandwidth ports of a vswitch to a high-bandwidth link to achieve load balancing. Avoid link congestion. Through configuration, You can bind two or four ports to forward data on specific ports to prevent packet loss when the forwarding rate of a single link is too low. Advantages of Trun
Protocol (DTP ),
Spanning Tree Protocol (STP ),
Port Aggregation Protocol (PagP ),
Link Aggregation Control Protocol (LACP.
By default, the monitoring port does not forward any data streams other than the SPAN Session. You can also set the ingress parameter to enable the layer-2 forwarding function of the monitoring port
Linux port ing 01ssh-C-groot@127.0.0.1-L5000: 61.235.139.123: 50000203 # enter the root password of the machine 0405 # Background execution: 06ssh-C-f-N-groot@127.0.0.1-L5000: 61.235.139.123: 50000708 # another: 0910 linux port ing 01ssh-C-g root@127.0.0.1-L 5000: 61.235.139.123: 500002 03 # enter the root password of the machine 04 05 # Background execution: 06ssh-C-f-N-g root@127.0.0.1-L 5000: 61.235.139.
-NAT interface, set the NAT parameter to dynamic NAPTStep 3: In parameter settings-interface on the right of the virtual service,Add a virtual serviceFirst, add ID: 1, public port: 16881, Private Port: 16881, TCP, Host IP: 192.168.1.7.Then click SetSecond, add ID: 2; Same as above, always add to 16889Then click set to add a virtual serviceThe last step is to choose "Save reboot" on the parameter settings-pr
The knowledge that you want to understand Linux port mappings is actually very simple. So now let's take a look at the mystery of it!
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Ssh-c-G root@127.0.0.1-l 5000:61.235.139.123:5000
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#输入机器的root密码
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#后台执行:
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Ssh-c-f-n-G root@127.0.0.1-l 5000:61.235.139.123:5000
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#另:
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Ssh-c-f-n-g-r Remote_port:local:port user@remotehost
You can bind the remote server port Remote_port
, the bandwidth of the backboard is linear.
◆ Second-layer packet forwarding speed
Layer 2 packet forwarding rate = number of Gigabit ports x 1. 488 Mpps + 0.1488 MB port count * Mpps + number of other types of ports * Calculation Method. If this rate can be less than or equal to the forwarding rate of a nominal L2 pac
You can bind the remote server port Remote_port to the local port, where-c is data compression,-f is the background operation, only when the user name password is prompted to the foreground. -N is not a remote command, which is useful in the case of only port forwarding. -G allows the remote host to connect to the loca
+ C to stop redisplayingStatistics. If omitted, netstat will print the currentConfiguration information once.
This is basically the case.
Okay, basically, you should have some port concept! Next, let's take a look at what port ing is.
1-Why ing: if you are a broadband access user such as ADSL, cable modem, or optical fiber, you want to create a game server or web server in an Internet cafe or company, and
You can bind a port remote_port of the remote server to the local port, where-C is used for data compression and-f is used for background operations. Only when the user name and password are prompted can you switch to the front-end. -N is not used to execute remote commands. This command is useful when only port forwarding
What is port mapping? Port mapping is also known as Port forwarding, and some are called NAT, virtual server. The port mapping process is like your home in a Community B building room 2410, your friend came to you, find the door of the community, do not know which floor you
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