{"id":3702,"date":"2018-01-30T16:19:42","date_gmt":"2018-01-30T15:19:42","guid":{"rendered":"https:\/\/www.boc.de\/watchguard-info-portal\/?p=3702"},"modified":"2018-01-30T16:31:36","modified_gmt":"2018-01-30T15:31:36","slug":"fireware-12-1-probleme-mit-http-und-smtp-proxy","status":"publish","type":"post","link":"https:\/\/wordpress.boc.de\/watchguard-info-portal\/2018\/01\/fireware-12-1-probleme-mit-http-und-smtp-proxy\/","title":{"rendered":"Fireware 12.1 \/ Probleme mit HTTP und SMTP Proxy"},"content":{"rendered":"<p>bei Fireware 12.1 gibt es ein Problem mit dem HTTP und mit dem SMTP Proxy.<\/p>\n<p>unter bestimmten Voraussetzungen kann es vorkommen, da\u00df der Proxy zu gro\u00dfe Pakete erzeugt, und diese nicht korrekt routen kann, weil er sich an MTU und &#8222;fragmentation needed&#8220; st\u00f6rt. Das Fehl-Verhalten ist unabh\u00e4ngig von der MTU-Einstellung beim jeweiligen Device.<\/p>\n<p>Workaround:<\/p>\n<ul>\n<li>Policy Manger =&gt; Settings =&gt; Global Settings =&gt; Tab Networking =&gt; TCP MTU Probing =&gt; Always enabled<\/li>\n<\/ul>\n<p><!--more--><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-3703\" src=\"https:\/\/www.boc.de\/watchguard-info-portal\/wp-content\/uploads\/2018\/01\/2018-01-30_16h16_45.png\" alt=\"\" width=\"611\" height=\"589\" srcset=\"https:\/\/wordpress.boc.de\/watchguard-info-portal\/wp-content\/uploads\/2018\/01\/2018-01-30_16h16_45.png 611w, https:\/\/wordpress.boc.de\/watchguard-info-portal\/wp-content\/uploads\/2018\/01\/2018-01-30_16h16_45-300x289.png 300w\" sizes=\"auto, (max-width: 611px) 100vw, 611px\" \/><\/p>\n<p>siehe hierzu:<\/p>\n<ul>\n<li><span style=\"font-size: inherit;\">Eintrag in der <\/span><a style=\"font-size: inherit; background-color: #ffffff;\" href=\"https:\/\/watchguard.force.com\/customers\/wgknowledgebase?type=KBKnownIssues&amp;SFDCID=kA42A000000HArBSAW&amp;lang=en_US\">WatchGuard Knowledgebase<\/a><span style=\"font-size: inherit;\">.<\/span><\/li>\n<\/ul>\n<p>Der Knowledgebase-Eintrag geht zwar nur \u00fcber den SMTP-Proxy, wir hatten den gleichen Fall aber auch bei einem HTTP-Proxy in Verbindung mit PPPoE.<\/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%2F2018%2F01%2Ffireware-12-1-probleme-mit-http-und-smtp-proxy%2F&subject=Fireware%2012.1%20%2F%20Probleme%20mit%20HTTP%20und%20SMTP%20Proxy\" title=\"Per E-Mail versenden\" aria-label=\"Per E-Mail versenden\" role=\"button\" rel=\"noopener nofollow\" class=\"shariff-link\" style=\"; 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st\u00f6rt. Das Fehl-Verhalten ist unabh\u00e4ngig von der MTU-Einstellung beim jeweiligen Device. Workaround: Policy Manger =&gt; Settings =&gt; Global Settings =&gt; Tab Networking =&gt; &hellip; <a href=\"https:\/\/wordpress.boc.de\/watchguard-info-portal\/2018\/01\/fireware-12-1-probleme-mit-http-und-smtp-proxy\/\" class=\"more-link\">Weiterlesen <span class=\"screen-reader-text\">Fireware 12.1 \/ Probleme mit HTTP und SMTP Proxy<\/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%2F2018%2F01%2Ffireware-12-1-probleme-mit-http-und-smtp-proxy%2F&subject=Fireware%2012.1%20%2F%20Probleme%20mit%20HTTP%20und%20SMTP%20Proxy\" 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%2F2018%2F01%2Ffireware-12-1-probleme-mit-http-und-smtp-proxy%2F\" title=\"Bei LinkedIn teilen\" aria-label=\"Bei LinkedIn teilen\" role=\"button\" rel=\"noopener nofollow\" class=\"shariff-link\" style=\"; 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