vpn | 易学教程

how to set up a vpn connection programmatically in MAC?

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问题 after searching for a while i found that the only best source available to establish a vpn connection programmatically in mac is at http://lists.apple.com/archives/Macnetworkprog/2011/May/msg00032.html but i was struck at the 5th point while coding which says about kSCNetworkProtocolTypePPP and there is no such thing... has anybody done it as shown in the above link or is there any other source available...? 回答1: but i was struck at the 5th point while coding which says about

Android: Sample Code to use own VPN connection in Android 4.0 using VPNService API [closed]

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I am new to android and I am trying to establish and connect to our own vpn (Not the default vpn providers i.e, PPTP , L2TP etc which is present in the Android Setting -> Wireless and Networks ) programatically. My scenario is, I have button and when I click the button I need to configure my own vpn and a link (say www.google.com) should go through that VPN which I had configured. Is there any sample code? I don't know why I googled thousand times, but did not github's search . Looking for ages now, I finally found one written beautifully . The code is literally beautiful which is rare: https:

如何攻击Fortigate SSL VPN

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故事开始于去年8月，当时我们正式开启了一个关于SSL VPN的研究项目。与IPSEC VPN和PPTP VPN相比，SSL VPN更易于使用，并且与任何网络环境兼容。现如今，SSL VPN也成为全球各大企业最主要的远程访问技术！但是，如果SSL VPN设备不安全怎么办?它既是企业的重要资产，也是企业的安全盲点。根据我们对财富500强企业的调查，排名前3位的SSL VPN厂商占据了约75%的市场份额。SSL VPN可以说是一个赢者通吃的市场。因此，一旦我们发现某款知名SSL VPN产品上的一个致命漏洞，影响将是巨大的。特别是考虑到，SSL VPN天生就必须暴露在互联网上。在研究开始时，我们对全球知名的SSL VPN厂商的CVE数量做了一个小调查: 我发现Fortinet和Pulse Secure似乎是最安全的，真的吗?很快，我们对着两个企业的产品发起了挑战！这篇文章主要关于Fortigate SSL VPN，下一篇文章将谈到Pulse Secure，欢迎持续关注！ Fortigate SSL VPN Fortinet将他们的SSL VPN产品线称为Fortigate SSL VPN，广泛部署于大中型企业。目前在互联网上有超过48万台Fortigate设备，在亚洲和欧洲很常见。我们可以通过URL特征 /remote/login 来进行识别，其技术特点如下： 1.一体化的二进制文件

Get VPN Connection status on Android

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问题 Is it possible to check if an Android device is connected to a VPN server? A search in the API provides 'paltform highlights' for Android 1.6, so that doesn't fill me with much confidence. 回答1: You can register to broadcastreceiver and all vpn states will come to you application. Add this to application manifest: <receiver android:name=".ConnectivityReceiver"> <intent-filter> <action android:name="vpn.connectivity" /> </intent-filter> </receiver> create a class: import android.content

Connect to VPN programmatically in iOS 8

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问题 Since the release of iOS 8 beta, I found a Network Extension framework in its bundle which is going to let developers configure and connect to VPN servers programmatically and without any profile installation. The framework contains a major class called NEVPNManager. This class also has 3 main methods that let me save, load or remove VPN preferences. I’ve written a piece of code in viewDidLoad method as following: NEVPNManager *manager = [NEVPNManager sharedManager]; [[NSNotificationCenter

Android: Sample Code to use own VPN connection in Android 4.0 using VPNService API [closed]

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问题 I am new to android and I am trying to establish and connect to our own vpn (Not the default vpn providers i.e, PPTP , L2TP etc which is present in the Android Setting -> Wireless and Networks ) programatically. My scenario is, I have button and when I click the button I need to configure my own vpn and a link (say www.google.com) should go through that VPN which I had configured. Is there any sample code? 回答1: I don't know why I googled thousand times, but did not github's search . Looking

How to solve javax.net.ssl.SSLHandshakeException Error?

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问题 I connected with VPN to setup the inventory API to get product list and it works fine. Once I get the result from the web-service and i bind to UI. And also I integrated PayPal with my application for make Express checkout when I make a call for payment I\'m facing this error. I use servlet for back-end process. Can any one say how to fix this issue? javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath

Palo Alto IPsec VPN

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1 、概述对于防火墙之间的 IPSec 连接，将整个 IP 数据包（标头和负载）嵌入另一个 IP 负载中，并且应用新标头。新标头将传出防火墙接口的 IP 地址作为源 IP 地址使用，而将隧道远端的传入防火墙接口作为目标 IP 地址使用。当数据包到达隧道远端的防火墙时，将原始数据包解密并发送到实际目标主机。标准拓扑如下图所示：有两种配置方法：基于路由的配置：不需要定义特殊规则或明确引用 VPN 隧道；路由和加密决策仅由目标 IP 地址确定。基于策略的配置：需要配置隧道的代理 ID。如果需要多个阶段 2 隧道，则在每个隧道上配置不同的代理 ID。有两种类型的SA：IKE SA 和 IPSEC SA。IKE SA的主要任务是形成一个加密的安全隧道，第二步的IPSEC SA使用第一阶段形成的安全隧道进行ipsec sa的协商。 IKE 阶段 1 对防火墙相互进行身份验证，并设置安全控制通道。它将使用 IKE 加密配置文件进行 IKE SA 协商。 IKE 阶段 2 流经阶段 1 SA，负责协商相关防火墙背后的网络通信的实际隧道。它将使用IPSec 加密配置文件进行 IPSec SA 协商。 2 、具体配置流程 1. 规划网络拓扑，然后确定所需隧道数。 2. 使用配置信息定义 IKE 网关，这些配置用于与对端网关进行 IKE 协议协商。 3. 为使用 IKE SA 协商的