Re: [Openvpn-devel] block-outside-dns and persist-tun Re: [Openvpn-devel] block-outside-dns and persist-tun From: ValdikSS - 2017-06-04 07:11:55 And for Windows users (OpenVPN +2.3.9) : block-outside-dns. share | improve this answer | follow | edited Jun 11 at 14:16. Community ♦ 1. answered Mar 9 '19 at 20:29. Soheyl Soheyl. 101 3 3 bronze badges. add a comment | Your Answer Thanks for contributing an answer to Unix & Linux Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid I tried enabling the "block-outside-dns" on two tunnels that i normally have running in parallel and i get no DNS resolves at all. Disabling it for one tunnel enabled DNS again but only for that tunnel, as expected. I was expecting this to work so that both tunnels DNS servers would work, or at least one of them and that no leaks would appear on the native interface. Attachments (1) Capture 31/03/2019 It uses Windows Filtering Platform (WFP) and works on >> Windows Vista or later. >> >> --block-outside-dns is not an openvpn directive it cannot be used in >> a >> config file as such. > At least as I understood it, it is. Ahh .. it is not ' push "setenv-safe opt block-outside-dns" ' ( I presume this was a method used prior to 2.3.9 ) simply ' push "block-outside-dns" ' or in the client openvpn.ArcherC7.push="'persist-key' 'persist-tun' 'user nobody' 'topology subnet' 'route-gateway dhcp' 'redirect-gateway def1' 'dhcp-option DNS 208.67.222.222' 'dhcp-option DNS 208.67.220.220' 'block-outside-dns'" Et vérifie ensuite que tous les paramètres de la commande push soient bien enregistrés via : uci show openvpn.ArcherC7 Add Windows DNS Leak fix using WFP ('block-outside-dns') This option blocks all out-of-tunnel communication on TCP/UDP port 53 (except for OpenVPN itself), preventing DNS …

v2: Simplify the "add sublayer" code. Currently each instance of openvpn adds WFP filters into an independent sublayer. As a block in one sublayer can over-ride a permit in another, this

Introduction. OpenVPN is a full-featured SSL VPN which implements OSI layer 2 or 3 secure network extension using the industry standard SSL/TLS protocol, supports flexible client authentication methods based on certificates, smart cards, and/or username/password credentials, and allows user or group-specific access control policies using firewall rules applied to the VPN virtual interface. We are pushing block-outside-dns via our server config (push "block-outside-dns"). Is there a way to disable this for a single user, perhaps via a client-config-dir file? Thanks! 2 comments. share. save hide report. 100% Upvoted. This thread is archived. OpenVPN Robust and flexible VPN network tunnelling Brought to you by: dazo sudo openvpn --block-outside-dns --config openvpn/client.ovpn. Написано более трёх лет назад . cakoxo. @cakoxo Автор вопроса. OpenVPN 2.3.10 x86_64-pc-linux-gnu . Написано более трёх лет назад

Introduction. OpenVPN is a full-featured SSL VPN which implements OSI layer 2 or 3 secure network extension using the industry standard SSL/TLS protocol, supports flexible client authentication methods based on certificates, smart cards, and/or username/password credentials, and allows user or group-specific access control policies using firewall rules applied to the VPN virtual interface.

Thu Jun 25 11:50:29 2020 OpenVPN 2.4.4 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on May 14 2019 Thu Jun 25 11:50:29 2020 library versions: OpenSSL 1.1.1 11 Sep 2018, LZO 2.08 Thu Jun 25 11:50:29 2020 ECDH curve prime256v1 added Thu Jun 25 11:50:29 2020 Outgoing Control Channel Encryption: Cipher 'AES-256-CTR' initialized with 256 bit key Thu Jun Dans cet article, nous allons créer notre propre serveur OpenVPN avec Docker. La mise en place de ce serveur VPN nous sera utile car en nous y connectant, il sera possible d'accéder à tous les services connectés au même réseau que celui-ci. But most often (see below) name resolution fails after the vpn is connected: openvpn: git-master + this patch locally compiled using mingw (64bit) LAN: IP (dhcp): 192.168.0.110 dns (dhcp): 1192.168.0.30 TUN/TAP: IP (automatic): 10.9.0.10 dns (fixed): 8.8.8.8 Windows firewall: disabled openvpn --config some-config.ovpn --block-outside-dns --verb4 --redirect-gateway def1 Name resolution times

OpenVPN Robust and flexible VPN network tunnelling Brought to you by: dazo

OpenVPN v2.3.9+ As of OpenVPN version 2.3.9 you can now prevent DNS leaks by specifying a new OpenVPN option. Simply open the .conf (or .ovpn) file for the server that you are connecting to and add the following on a new line. For more information see the OpenVPN manual. block-outside-dns add an option ("block-outside-dns" or something more creative) this option would enable this protection feature on Win32, and be pushable from the server on other platforms that do not need this or do not have a capability to enable this, it would be a no-op or just print a warning, but not an error (so it can be always pushed) Re: [Openvpn-devel] block-outside-dns and persist-tun Re: [Openvpn-devel] block-outside-dns and persist-tun From: ValdikSS - 2017-06-04 07:11:55 The block-outside-dns is a Windows specific option:--block-outside-dns Block DNS servers on other network adapters to prevent DNS leaks. This option prevents any application from accessing TCP or UDP port 53 except one inside the tunnel. It uses Windows Filtering Platform (WFP) and works on Windows Vista or later. DEFINE_GUID (OPENVPN_BLOCK_OUTSIDE_DNS_SUBLAYER, 0x2f660d7e, 0x6a37, 0x11e6, 0xa1, 0x81, 0x00, 0x1e, 0x8c, 0x6e, 0x04, 0xa2) VOID NETIOAPI_API_ InitializeIpInterfaceEntry (PMIB_IPINTERFACE_ROW Row) static void default_msg_handler (DWORD err, const char *msg) static DWORD add_sublayer (GUID uuid) DWORD It uses Windows Filtering Platform (WFP) and works on >> Windows Vista or later. >> >> --block-outside-dns is not an openvpn directive it cannot be used in >> a >> config file as such. > At least as I understood it, it is. Ahh .. it is not ' push "set [Openvpn-devel] [PATCH v9-master] Add Windows DNS Leak fix using WFP ('block-outside-dns') [Openvpn-devel] [PATCH v9-master] Add Windows DNS Leak fix using WFP ('block-outside-dns') From: ValdikSS - 2015-12-10 20:52:10

DNS translates domain names into IP addresses, removing the need for a user to if you're connected to a misconfigured network, your DNS requests can “leak” outside of the encrypted tunnel. If a VPN doesn't support IPv6 or doesn't know how to block IPv6 requests, then OpenVPN plugin to fix Windows DNS Leaks.

If you're using our TG Client client on Windows 10 and you use the block-outside- DNS option to prevent DNS leaks then you may experience some connection  I use AD and one of my servers is connected to a VPN using the OpenVPN block- outside-dns option (to stop DNS leaking). My issue is that I can no … Sep 30, 2017 You would enter this line into your .ovpn configuration file block-outside-dns. With that line installed and a dns leak test performed the public IP  Jun 2, 2018 Some VPN providers configuration files already have these lines in them. block- outside-dns script-security 2 up /etc/openvpn/update-resolv-conf Mar 18, 2019 2019 Unrecognized option or missing or extra parameter(s) in client.ovpn:14: block-outside-dns (2.4.7) Mon Mar 18 10:21:14 2019 OpenVPN  Jan 4, 2019 With the OpenVPN tunnel that I have set up so that I can get into my own network from outside I used the "block-outside-dns" to force the use of  *Question*: Fixing registry with --block-outside-dns is simple, but what should we do with IPv6 in OpenVPN? Should we introduce an option to disable IPv6 DNS