In the TCP socket development process, you want the extranet client to map to a locally-initiated TCP server, summarizing the local TCP port mapping extranet method:1, open Ngrok after registered users, URL ngrok:https://www.ngrok.cc/2, add a tunnel, select the free version can be. Specific ways to add: https://www.sunnyos.com/article-show-70.html3. Start Ngrok Tunnel: Ngrok Reference: https://www.sunnyos.c
Let's take a look at an article about CentOS installation VPN pptpd firewall iptables forwarding settings, this problem is because a friend set up some of the Web site can not be accessed when the solution came up.
CentOS installation VPN appears some of the site can not access the problem! Some forwarding rule setting
CentOS installation VPN appears some of the site can not access the problem! Some forwarding rule settings for iptables
The NAT conversion rule is established, otherwise the dial cannot be connected to the public network through the remote gateway.
Iptables-t nat-a postrouting-o eth0-j snat–to-source $src _ip
Centos 6.4 Installing VPN problems with some Web si
SSH port forwarding
Through the introduction in this article, you can learn how to apply the SSH port forwarding mechanism to solve some problems in daily work/life. Learn to use port forwarding in a non-secure environment to encr
This article turns from: http://www.ibm.com/developerworks/cn/linux/l-cn-sshforward/index.html, as for what use, understand understand!Actual Combat SSH Port forwardingThrough the introduction of this article, readers can learn how to apply the SSH port forwarding mechanism to solve daily work/life problems. Learn to use port
,
Maximum HTTP request size is 2 MB
Heavy traffic consuming protocols and games are blocked
These limitations are good enough for an average user and shoshould not bother about it.4. packetix. net
Its a Japanese VPN solution with technology developed by SoftEther Corporation.
You can use packetix. Net Online Test Service for free. Here's what you can do with this service.
You can create your private v
Click Make me invisible can be connected, pay attention to the connection process will cause broken nets, QQ need to log in again.Need to register to pay to automatically follow the system to start, automatically reconnect, automatic prompt connection interruption, but also can, at least more than a lot of other means good (for example, no edge and other software), VPN is a safe way.
Smarthide News free
Click make me invisible to connect. Note that the connection process may cause network disconnection and QQ needs to log on again.You need to sign up and pay the money before you can automatically follow the system to start and reconnect. The system will automatically prompt that the connection is interrupted. However, it is better than many other methods (such as software without edge ), VPN is a safe method.
Smarthide news
C ( public ), but because a in the network, so C can not directly connect A, But C can be connected by B to A.A 10.1.6.234B 114.80.130.88/10.1.10.1C 119.75.218.77Execute the following command on B :Ssh-l taomee-p 58000-r 10.1.10.1:59000:10.1.6.234:80 119.75.218.77Execute the following command on C :Curl http://10.1.6.234======================================================Reprint Source Address: http://my.oschina.net/guol/blog/115235=======================================================My sit
As we all know, SSH is a secure transmission protocol, which is used on many connected servers. However, in addition to this function, its tunnel forwarding function is even more attractive. The following are some of my experiences with your actual operations based on your needs and the information you find online.SSH/plinkCommand basic information:Ssh-C-f-N-g-L listen_port: DST_Host: DST_port user @ Tunnel_HostSsh-C-f-N-g-R listen_port: DST_Host: DST
443
The server only receives data packets and does not forward the packets.
Run the following command:
Sysctl-w net. inet. ip. forwarding = 1
You can find that the server starts to forward data, but it cannot be accessed normally.
The tcpdump packet capture command shows that the client sends data packets to the server ($ proxy). after the server forwards data, the destination address returned data packets do not match the data packets sent by the cl
remote host. -N: Do not execute scripts or commands, usually with-F. -G: In the-l/-r/-d parameter, allow the remote host to connect to the established forwarding port, if this parameter is not added, only allow the local host to establish the connection. -L Local Port: Destination IP: Target Port-T does not assign TTY
From: http://manas.tungare.name/blog/ssh-port-forwarding-on-mac-os-x/
After spending about an hour processing ing what shoshould, in theory, be a simple matter, I figured I 'd write a blog post that might one day save another soul an hour or so from his or her life. so, for good karma, basically. in the past, I have set up port
-n without logging on to the remote host. -
N: script or command is not executed, and is usually used with-F. -
G: In the-l/-r/-d parameter, the remote host is allowed to connect to the established forwarding port, and if this parameter is not added, only the local host is allowed to establish a connection.
-L Local Port: Destination IP: Destination
, in the peanut shell to add a map to the intranet, each add a map peanut shell will be reassigned a port, this step is to map the port on our intranet host to a different port, when the user access to provide a map port host of a port, The server transfers the request to a
Today, Rangers bring you the software from the world's largest online software provider-Zhouhau software (ZOHO), the tool name is "free syslog forwarder Tool", the toll-free syslog forwarding tool.
There is a scenario where we have multiple log servers, or log analysis platforms, but many routers, switches, firewalls, and other devices only support the
the local machine in the Code, the following information is found:Code:
Servletrequest. getserverport ()
What a look at no problem, a careful look really have a problem, the following is the explanation of JAVA-API:
Getserverport public int getserverport () returns the port number to which the request was sent. it is the value of the part after ":" in the Host header value, if any, or the server port
Keywords: SerialPort to TCP/IP, serial, remote serial debugging
I began to learn from the Vckbase VC + +, without him I will not progress so quickly, has been trying to give vckbase contribute to something, just today is free, on the earlier write a serial port to TCP/IP program sent up, I hope to learn a little bit of serial programming for beginners to help.
The biggest flaw of the program:
Windows to
Author: XiaojianThis machine: lcx-listen 2222 33332222 for forwarding port, 3333 for any unused ports on the machineBroiler:lcx-slave 119.75.217.56 2222 127.0.0.1 3389119.75.217.56 for the local ip,2222 for the forwarding port, 127.0.0.1 for the broiler intranet ip,3389 for the remote terminal port3389 format 127.0.0.1
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