good vpn software

Now there are still a lot of VPN Router applications, and the market demand is also very high, so I studied the VPN Router's questions about VPN multi-channel bundling, here I will share with you, I hope it will be useful to you. VPN (Virtual Private Network) technology is of great help and considerable economic signif

Virtual private Network (VPN) provides secure connections, but many problems may occur. The following are some situations and suggestions for handling them.The user cannot access the file server.If the user can access the file server through an IP address but not by name, the most likely cause is the domain name resolution problem. It may be due to a problem with NetBIOS or DNS host name resolution. If the client operating system uses NetBIOS, the

For remote Wan users, the virtual private network (VPN) should be a secure connection, but many enterprises question the security of VPN due to many obvious vulnerabilities. RainerEnders is the CTO of NCPengineering for VPN security in the Americas. In this article, we will learn how VPN security vulnerabilities are ge

Frequent business trip friends, for VPN network should be not unfamiliar, because access to VPN network, no matter where you can through the Internet at any time, to remote access to the internal network of enterprises, access to internal data. And with China's "broadband China" strategy of in-depth promotion, optical fiber home gradually landing, the family network applications began to become more and mor

An example of Cisco Easy VPN comprehensive configuration is shown in this example. The topology is 15-15. In this example, the Cisco 831 router is used as the remote device of Easy VPN and the Cisco 1751 router is used as the device of Easy VPN Server. In this example, the WAN interface IP addresses of the Cisco 1751 router and the Cisco 831 router are both stati

VPN routing technology mainly uses tunneling technology and encryption methods. Here we mainly analyze how to use the VPN route table to use both the optical fiber access network and the telecom network. If you use IP address verification, and it is not suitable for normal ADSL and other dynamic IP address users, it is not convenient to use MAC address verification, because many ADSL uses a router to access

ADSL is called an asymmetric digital user line. ADSL is called asymmetric because its two duplex channels are used to transmit data to users, and only a small portion of bandwidth is used to send user information back. ADSL supports the upload speed of kbps on a copper-to-copper line ~ 1 Mbps, 1 Mbps ~ 8 Mbps, valid transmission distance between 3km ~ Within the range of 5km.Application of ADSLAdsl lan users have four fixed static IP addresses. enterprises applying for access through the adsl la

version of the system may not. run the following command to confirm the installation. if not, the system will not perform any operations: # Yum install-y ppp iptables 3. install pptp. this software is not available in the yum source. we need to download it manually. we need to switch to the tmp directory first: # Cd/tmp Run the following command to download the pptp installation package: # Wget http://acelnmp.googlecode.com/files/pptpd-1.3.4-1.rhel5.

aaa123 // set the pre-shared keyASA (config-tunnel-ipsec) # exitASA (config) # crypto ipsec transform-set benet-set esp-3des esp-sha-hmac // define a transport setASA (config) # crypto dynamic-map dymap 1 set transform-set benet-set // defines the dynamic MAP and calls the transport setASA (config) # crypto map stamap 1 ipsec-isakmp dynamic dymap // defines the static MAP and calls the above dynamic MAP ASA (config) # crypto map stamap int outside // It is finally applied in the outside area. Y

parameter;2. How to develop a TAP-based virtual network card application on the Android system;3. How does the iOS platform call underlying network operation commands;...These are all real problems. The reason why manufacturers do not open these mechanisms may be that they think they have taken the largest set during interface design, they focus too much on common application interfaces to prevent confusion caused by underlying operations and other insecure factors. This is understandable, but

Detailed installation Tutorial: 1. Check whether the server has necessary support. If no support is provided, pptp cannot be installed. Run the following command: # Modprobe ppp-compress-18 echo OK After this execution, "OK" is displayed, indicating that the operation is successful. However, you need to perform another check and enter the command: # Cat/dev/net/tun If the result of this command is the following text, it indicates that: Cat:/dev/net/tun: File descriptor in bad state You can ins

Centos6.2 VPN dialing Because the newly installed server is inaccessible to the outside world within the internal network, you need to first dial out the external VPN for development and use. Now, record the process of establishing VPN dialing on CENTOS6.2. 1. to install the required package, you need to install the ppp and pptp packages. install the

1, server-side installation software 1.1 First install PPP, command: [root@test ~] #yum install-y PPP hint complete! To indicate a successful installation; 1.2 Installs the PPTPD, the installation command is as follows: [root@test ~] #yum Clean all [root@test ~] #yum makecache [root@test ~] #yum-y install pptpd 2, Configuration pptpd 2.1 Edit/etc/pptpd.conf, command as follows [root@test ~] #vi/etc/pptpd.conf will #localip 192.168.0.1 #

At present, Edge Routers are widely used, and there are also many problems. So I studied the security of MPLS-based VPN technology in Edge Routers, I would like to share it with you here and hope it will be useful to you. If an enterprise deploys a Multi-Protocol Label exchange MPLS) managed Virtual Private Network VPN (VPN) service, it will not only get high-qua

This is certainly not the first article on "Quick Guide to building a VPN using Cisco devices, however, we still hope that this guide will become an all-in-one guide for users who use ASA 5505 devices to set up VPN and connect to the Internet. The ASA itself has a setup wizard, but this wizard does not cover all aspects of work required by the user, and some steps are vague, making it difficult for the user

The demand for the soft route of sea spider in the soft route market is still very high, and its performance is also very good, maybe many people do not know how to use the soft route of sea spider through the vpn line, it does not matter, after reading this article, you must have gained a lot. I hope this article will teach you more things. I believe many of my eldest brothers have already learned and done well by Using

Cisco asa vpn xml Parser Denial of Service Vulnerability (CVE-2015-0677)Cisco asa vpn xml Parser Denial of Service Vulnerability (CVE-2015-0677) Release date:Updated on:Affected Systems: Cisco ASA 1, 5500 Description: CVE (CAN) ID: CVE-2015-0677The Cisco ASA 5500 Series Adaptive Security Device is a modular platform for providing security and VPN services.

In today's network age, information security is a problem we have to face. Usually also many do Hai friends ask VPN will not increase security risks, such as credit card theft brush and so on. In fact, this problem needs to be dialectical, the Internet does not have absolute security, VPN is also, if the use of some malicious businessmen to provide VPN, still may

open communication network. It introduces the connection mode in a connectionless network, this reduces network complexity and is compatible with various mainstream network technologies, greatly reducing network costs while improving IP service performance, it ensures the service quality of network communication and the security of data transmission. The combination of multicast technology and mpls vpn technology will provide operators with an unprec

Cracking Point-to-Point Tunneling Protocol (PPTP) encrypted VPN (1) PPTP (Point to Point Tunneling Protocol) is a Point-to-Point Tunneling Protocol. This protocol is a new enhanced security protocol developed on the basis of the PPP protocol. It supports multi-protocol Virtual Private Network (VPN) and can pass the password verification protocol (PAP) and Extensible Authentication Protocol (EAP) to enhance