First step: Modify the server-side configuration file:
Auth-user-pass-verify/usr/local/openvpn/etc/checkpsw.sh via-env
Client-cert-not-required
Username-as-common-name
Script-security 3
Note: If you add client-cert-not-required, then the user name password is used to authenticate the login, and if not, the certificate and username password are required to double verify the login.
checkpsw.sh Download Address: http://openvpn.se/files/other/checkp
Install OpenVPN in CentOS 7
The command is very simple, but there seems to be no information on the Internet, only the information below RHEL6.
Directly paste the command:
12345
Cd ~ Wget http://swupdate.openvpn.org/as/openvpn-as-2.0.10-CentOS7.x86_64.rpmrpm-Uvh openvpn-as-2.0.10-CentOS7.x86_64.rpmovpn-init
You can modify the port information.
After i
Test the OpenVPN encrypted tunnel on a single machine and solve the problemIn fact, the relationship between this article and OpenVPN is not very large, but the problems exposed during the OpenVPN test. This article contains many details about IP routing and conntrack.If you ping the IP address configured on a network card, the result will not pass through the ne
Two days ago, hivefans built an openvpn server on a server in the cluster because of the inconvenience caused by the cluster's network segment. If you have encountered some problems, record them.
He only built an openvpn and did not install ovpn on other servers in the cluster. He wanted to route the Intranet network segment of the cluster through ovpn, the company can access the Intranet address of the cl
It would be nice if openvpn can also achieve the transmission mode VPN. If the VPN product based on openvpn can be connected to the user's network environment as an expensive network cable, it would be nice to automatically capture the traffic of interest; how nice is it to configure only one IP address to work without configuring any route.
We know that openvpn
The command is very simple, but there seems to be no information on the Internet, only the information below RHEL6. Directly paste the command: 12345cd ~
The command is very simple, but there seems to be no information on the Internet, only the information below RHEL6.
Directly paste the command:
12345
Cd ~ Wget http://swupdate.openvpn.org/as/openvpn-as-2.0.10-CentOS7.x86_64.rpm rpm-Uvh openvpn
I. openvpn needs to be installed in RedHatLinux enterprise 4. Easy to install, high platform compatibility, and no need to compile the kernel. (I'm disgusted with re-compiling the kernel software); 2. I can penetrate the NAT Intranet without limits. (This is critical because my server is currently in school, in our lab, we use NAT layer by layer.) due to the above two restrictions, I have tried pptpd and opensvn in many existing solutions. Pptpd is an
The order is simple, but there seems to be no information on the Internet, only RHEL6 the following information.
Direct Paste Command:
CD ~wget http://swupdate.openvpn.org/as/openvpn-as-2.0.10-CentOS7.x86_64.rpm
RPM-UVH openvpn-as-2.0.10-centos7.x86_64.rpmOvpn-init
After the port what can be changed by themselves.
After Init, you need to modify the OpenVPN a
There are several timers in openvpn. These timers limit the maximum duration of some specific behaviors of openvpn. If they are not set properly, they may cause inexplicable disconnection problems, however, how to set these counters does not have a general solution. In certain cases, they cannot be too large or too small.
1. Ping
This timer defines the interval between sending ping packets (in case of upper
Today, I saw some people in the group mentioned OpenVPN, just a holiday at home, incidentally, the study of the next.
2 years ago when I was a little white when the old unit even headquarters OA used OpenVPN This client, feel pretty good, and feel that after the project should also be able to use, so Google on the internet a large number of fragmented data, tossing the majority of the day, according to the
Use phpmailer to implement simple openvpn user authentication. Now everyone has countless accounts and passwords, which cannot be remembered. The principle is to complete authentication through the mail server pop service, or use SMTP and add SSL to improve security; password setting is not required. now everyone has countless accounts and passwords, which is hard to remember. The principle is that authentication is completed through the pop service o
Now everyone has countless accounts and passwords, which cannot be remembered. The principle is to complete authentication through the mail server pop service, or use SMTP, and add SSL to improve the security of OpenVPN.
Now everyone has countless accounts and passwords, which cannot be remembered. The principle is to complete authentication through the mail server pop service, or use SMTP and add SSL to improve security; this eliminates the trouble
Some time ago, the virtual network card installation was required.ProgramSo in the website to collect some, find to find, did not see a separate installation, most of the said to install openvpn, and then only install the virtual network card of the tap-win32. In this case, the program of openvpnis used to run tapinstall.exe install oemwin2k. run the command line INF tap0x01 to install the tool (these files can be found in the
I would like to ask you how to modify the OpenVPN protocol. a project needs to modify the original OpenVPN protocol to cope with DPI analysis. could you please discuss your ideas? thank you!
Reply to discussion (solution)
In this regard, there are a lot of existing solutions and patches on the Internet, is generally added to protocol obfuscation and encryption, you can refer to TorProject ObfsProxy (
Explore UDP socket programming and udp socket programming
UDP and TCP are in the same layer network model, that is, the transport layer. There are many applications based on the two. Common TCP-based applications include HTTP and Telnet, UDP-based DNS, NFS, and SNMP are available.
I recently learned about UDP programming and got a big head. I have found a lot of materials and consulted many colleagues. I think the following information is well written, so I collected it for reference.1. During UDP programming, the most common question is how many bytes are sent at a time?Of course, there is no unique answer. The answer to this question varies with the requirements of different system
UDP, broadcast and Multicast (7), udp Broadcast
(Reference) TCP/IP explanation, Volume 1: Protocol
UDP is a simple datagram-oriented transport layer protocol. Each output operation of a process generates a UDP datagram and assembles it into an IP datagram to be sent. UDp dat
UDP is widely used in network applications that need to transmit data to each other, such as the UDP protocol used by QQ. In the case of bad network quality, the packet loss is very serious when using UDP protocol, but the UDP occupies less resources and the processing speed is fast,
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