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我正在编写一个程序，它将在用户的计算机上设置 VPN。我的系统管理员告诉我，VPN 的安全页面必须检查这些安全设置，而不是其他设置。

我已将此代码用作我自己的代码的基础。我的版本几乎正确设置了所有内容，除了它不能取消选中标题为Challenge Handshake Authentication Protocol (CHAP)和的 2 个框Microsoft CHAP Version 2 (MS-CHAP v2)。Data Encryption是否可以在将下拉列表设置为时以编程方式取消选中这两个复选框Require Encryption？这是我的代码：

void createVPN()
{
    DWORD size = 0;
    RasGetEntryProperties(NULL, L"", NULL, &size, NULL, NULL);
    LPRASENTRY pras = (LPRASENTRY)malloc(size);
    memset(pras, 0, size);
    pras->dwSize = size;
    pras->dwType = RASET_Vpn;
    pras->dwRedialCount = 1;
    pras->dwRedialPause = 60;
    pras->dwfNetProtocols = RASNP_Ip;
    pras->dwEncryptionType = ET_Require;
    wcscpy_s(pras->szLocalPhoneNumber, L"meraki.companyname.com");
    wcscpy_s(pras->szDeviceType, RASDT_Vpn);
    pras->dwfOptions = RASEO_RemoteDefaultGateway;

    pras->dwVpnStrategy = VS_L2tpOnly;
    pras->dwfOptions2 |= RASEO2_UsePreSharedKey;
    pras->dwfOptions &= ~(RASEO_RequireCHAP | RASEO_RequireMsCHAP | RASEO_RequireMsCHAP2);//This should unset the CHAP flags, but it doesn't.

    RasSetEntryProperties(NULL, L"CompanyName Meraki VPN", pras, pras->dwSize, NULL, 0);

    RASCREDENTIALS ras_cre_psk = { 0 };
    ras_cre_psk.dwSize = sizeof(ras_cre_psk);
    ras_cre_psk.dwMask = RASCM_PreSharedKey;
    wcscpy_s(ras_cre_psk.szPassword, L"redacted");
    RasSetCredentials(NULL, L"CompanyName Meraki VPN", &ras_cre_psk, FALSE);

    free(pras);
}

我认为通过设置pras->dwEncryptionType为ET_Require, 可以防止RASEO_RequireCHAP其他 CHAP 标志被取消设置，但在 Windows GUI 中，可以取消选中它们并将Data Encryption设置为Require Encryption. 我的系统管理员告诉我，如果选中任何一个 CHAP 复选框，或者Data Encryption未设置为Require Encryption. 我能做些什么？

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1 回答 1

2

我终于想通了。你必须设置RASEO_RequirePAP开关。这是函数的最终版本：

void createVPN()
{
    DWORD size = 0;
    RasGetEntryProperties(NULL, L"", NULL, &size, NULL, NULL);
    RASENTRY rasEntry = {};
    rasEntry.dwSize = sizeof(rasEntry);
    rasEntry.dwType = RASET_Vpn;
    rasEntry.dwRedialCount = 1;
    rasEntry.dwRedialPause = 60;
    rasEntry.dwfNetProtocols = RASNP_Ip;
    rasEntry.dwEncryptionType = ET_Require;
    wcscpy_s(rasEntry.szLocalPhoneNumber, L"meraki.enoble.com");
    wcscpy_s(rasEntry.szDeviceType, RASDT_Vpn);
    rasEntry.dwfOptions = RASEO_RemoteDefaultGateway;

    rasEntry.dwVpnStrategy = VS_L2tpOnly;
    rasEntry.dwfOptions2 |= RASEO2_UsePreSharedKey;
    rasEntry.dwfOptions |= RASEO_RequirePAP;

    RasSetEntryProperties(NULL, L"Enoble Meraki VPN", &rasEntry, rasEntry.dwSize, NULL, 0);

    RASCREDENTIALS ras_cre_psk = { 0 };
    ras_cre_psk.dwSize = sizeof(ras_cre_psk);
    ras_cre_psk.dwMask = RASCM_PreSharedKey;
    wcscpy_s(ras_cre_psk.szPassword, L"passport2k");
    RasSetCredentials(NULL, L"Enoble Meraki VPN", &ras_cre_psk, FALSE);
}

我希望这对某人有所帮助。

于 2015-04-21T16:40:26.310 回答