{"id":16480,"date":"2023-02-06T13:41:57","date_gmt":"2023-02-06T12:41:57","guid":{"rendered":"https:\/\/www.boc.de\/watchguard-info-portal\/?p=16480"},"modified":"2024-02-02T14:32:11","modified_gmt":"2024-02-02T13:32:11","slug":"openvpn-data-ciphers-ab-openvpn-2-6-x","status":"publish","type":"post","link":"https:\/\/wordpress.boc.de\/watchguard-info-portal\/2023\/02\/openvpn-data-ciphers-ab-openvpn-2-6-x\/","title":{"rendered":"OpenVPN data-ciphers ab OpenVPN 2.6.x"},"content":{"rendered":"<p>Aktuell kann es bei Verwendung der aus der WatchGuard exportierten SSLVPN &#8211; Konfigurationsdatei &#8222;client.ovpn&#8220; mit dem OpenVPN Community Client (ab Version 2.6.x) zu einer Fehlermeldung \u00e4hnlich &#8222;Unrecognized option or missing or extra parameter(s)&#8220; kommen.<\/p>\n<p>Beispiel unter openVPN 2.5.x:<\/p>\n<p><strong>DEPRECATED OPTION: &#8211;cipher set to &#8218;aes-128-cbc&#8216; but missing in &#8211;data-ciphers (AES-256-GCM:AES-128-GCM). Future OpenVPN version will ignore &#8211;cipher for cipher negotiations. Add &#8218;aes-128-cbc&#8216; to &#8211;data-ciphers or change &#8211;cipher &#8218;aes-128-cbc&#8216; to &#8211;data-ciphers-fallback &#8218;aes-128-cbc&#8216; to silence this warning.<\/strong><\/p>\n<p>oder<\/p>\n<p><strong>OPTIONS ERROR: failed to negotiate cipher with server.  Add the server&#8217;s cipher (&#8218;AES-256-CBC&#8216;) to &#8211;data-ciphers (currently &#8218;AES-256-GCM:AES-128-GCM:CHACHA20-POLY1305&#8216;) if you want to connect to this server.<\/strong><\/p>\n<p><!--more--><\/p>\n<p>bzw.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-16486\" src=\"https:\/\/www.boc.de\/watchguard-info-portal\/wp-content\/uploads\/2023\/02\/OpenVPN-3-3-6-300x124.png\" alt=\"\" width=\"300\" height=\"124\" srcset=\"https:\/\/wordpress.boc.de\/watchguard-info-portal\/wp-content\/uploads\/2023\/02\/OpenVPN-3-3-6-300x124.png 300w, https:\/\/wordpress.boc.de\/watchguard-info-portal\/wp-content\/uploads\/2023\/02\/OpenVPN-3-3-6.png 336w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Das Problem l\u00e4sst sich l\u00f6sen in dem man die OpenVPN-Konfigurationsdatei editiert und die Zeile beginnend mit dem Parameter &#8222;cipher&#8220; ab\u00e4ndert (die Verschl\u00fcsselungsparameter sind abh\u00e4ngig von der Server-Konfiguration):<\/p>\n<p>Beispiel:<\/p>\n<p>Die Zeile<\/p>\n<pre>cipher AES-256-CBC<\/pre>\n<p>durch<\/p>\n<pre>data-ciphers AES-256-CBC<\/pre>\n<p>ersetzen.<\/p>\n<p>&nbsp;<\/p>\n<div class=\"shariff\"><ul class=\"shariff-buttons theme-default orientation-horizontal buttonsize-medium\"><li class=\"shariff-button mailto shariff-nocustomcolor\" style=\"background-color:#b32317\"><a href=\"mailto:?body=https%3A%2F%2Fwordpress.boc.de%2Fwatchguard-info-portal%2F2023%2F02%2Fopenvpn-data-ciphers-ab-openvpn-2-6-x%2F&subject=OpenVPN%20data-ciphers%20ab%20OpenVPN%202.6.x\" title=\"Per E-Mail versenden\" aria-label=\"Per E-Mail versenden\" role=\"button\" rel=\"noopener nofollow\" class=\"shariff-link\" style=\"; 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Beispiel unter openVPN 2.5.x: DEPRECATED OPTION: &#8211;cipher set to &#8218;aes-128-cbc&#8216; but missing in &#8211;data-ciphers (AES-256-GCM:AES-128-GCM). Future OpenVPN version will ignore &#8211;cipher for cipher negotiations. Add &#8218;aes-128-cbc&#8216; to &#8211;data-ciphers or change &#8211;cipher &hellip; <a href=\"https:\/\/wordpress.boc.de\/watchguard-info-portal\/2023\/02\/openvpn-data-ciphers-ab-openvpn-2-6-x\/\" class=\"more-link\">Weiterlesen <span class=\"screen-reader-text\">OpenVPN data-ciphers ab OpenVPN 2.6.x<\/span> <span class=\"meta-nav\">&raquo;<\/span><\/a><\/p>\n<div class=\"shariff\"><ul class=\"shariff-buttons theme-default orientation-horizontal buttonsize-medium\"><li class=\"shariff-button mailto shariff-nocustomcolor\" style=\"background-color:#b32317\"><a href=\"mailto:?body=https%3A%2F%2Fwordpress.boc.de%2Fwatchguard-info-portal%2F2023%2F02%2Fopenvpn-data-ciphers-ab-openvpn-2-6-x%2F&subject=OpenVPN%20data-ciphers%20ab%20OpenVPN%202.6.x\" title=\"Per E-Mail versenden\" aria-label=\"Per E-Mail versenden\" role=\"button\" rel=\"noopener nofollow\" class=\"shariff-link\" style=\"; background-color:#999; color:#fff\"><span class=\"shariff-icon\" style=\"\"><svg width=\"32px\" height=\"20px\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 32 32\"><path fill=\"#999\" d=\"M32 12.7v14.2q0 1.2-0.8 2t-2 0.9h-26.3q-1.2 0-2-0.9t-0.8-2v-14.2q0.8 0.9 1.8 1.6 6.5 4.4 8.9 6.1 1 0.8 1.6 1.2t1.7 0.9 2 0.4h0.1q0.9 0 2-0.4t1.7-0.9 1.6-1.2q3-2.2 8.9-6.1 1-0.7 1.8-1.6zM32 7.4q0 1.4-0.9 2.7t-2.2 2.2q-6.7 4.7-8.4 5.8-0.2 0.1-0.7 0.5t-1 0.7-0.9 0.6-1.1 0.5-0.9 0.2h-0.1q-0.4 0-0.9-0.2t-1.1-0.5-0.9-0.6-1-0.7-0.7-0.5q-1.6-1.1-4.7-3.2t-3.6-2.6q-1.1-0.7-2.1-2t-1-2.5q0-1.4 0.7-2.3t2.1-0.9h26.3q1.2 0 2 0.8t0.9 2z\"\/><\/svg><\/span><span class=\"shariff-text\">E-Mail<\/span>&nbsp;<\/a><\/li><li class=\"shariff-button linkedin shariff-nocustomcolor\" style=\"background-color:#b32317\"><a href=\"https:\/\/www.linkedin.com\/sharing\/share-offsite\/?url=https%3A%2F%2Fwordpress.boc.de%2Fwatchguard-info-portal%2F2023%2F02%2Fopenvpn-data-ciphers-ab-openvpn-2-6-x%2F\" title=\"Bei LinkedIn teilen\" aria-label=\"Bei LinkedIn teilen\" role=\"button\" rel=\"noopener nofollow\" class=\"shariff-link\" style=\"; 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