{"id":901,"date":"2019-01-03T01:00:12","date_gmt":"2019-01-03T00:00:12","guid":{"rendered":"https:\/\/www.linuxboxen.dk\/?p=901"},"modified":"2019-01-03T01:00:12","modified_gmt":"2019-01-03T00:00:12","slug":"port-der-er-aabnen","status":"publish","type":"post","link":"https:\/\/www.linuxboxen.dk\/?p=901","title":{"rendered":"Hvordan ser man hvilken port der er \u00e5bnen i real time."},"content":{"rendered":"<p>For at se alle \u00e5bne porte i linux bruges en kommando som hedder netstat.<\/p>\n<p>netstat kan rigtig mange ting.<\/p>\n<p>$ netstat -tulpn &#8211;statistics<\/p>\n<p>IcmpMsg:<br \/>\nInType0: 2<br \/>\nInType3: 32032<br \/>\nInType8: 31145<br \/>\nInType11: 694<br \/>\nInType13: 11<br \/>\nOutType0: 31145<br \/>\nOutType3: 68998<br \/>\nOutType14: 11<br \/>\nTcp:<br \/>\n980530 active connections openings<br \/>\n199881 passive connection openings<br \/>\n1171 failed connection attempts<br \/>\n1558 connection resets received<br \/>\n6 connections established<br \/>\n1591750919 segments received<br \/>\n1301290369 segments send out<br \/>\n413205 segments retransmited<br \/>\n43035 bad segments received.<br \/>\n904786 resets sent<br \/>\nInCsumErrors: 43017<br \/>\nUdp:<br \/>\n30403306 packets received<br \/>\n71680 packets to unknown port received.<br \/>\n168 packet receive errors<br \/>\n30403996 packets sent<br \/>\nInCsumErrors: 168<\/p>\n<p>osv osv. Denne kommando kan give et meget langt svar.<\/p>\n<ul>\n<li><code>-t<\/code> \u2013 Viser TCP porte.<\/li>\n<li><code>-u<\/code> \u2013 Viser UDP porte.<\/li>\n<li><code>-l<\/code> \u2013 Viser socket.<\/li>\n<li><code>-n<\/code> \u2013 Viser port nr.<\/li>\n<li><code>-p<\/code> \u2013 Viser process\/program navn.<\/li>\n<\/ul>\n<p>For at se TCP- og UDP-porte i realtid kan du dog k\u00f8re netstat- eller ss-v\u00e6rkt\u00f8jet med watch som vist her.<\/p>\n<p>$ sudo watch netstat -tulpn<\/p>\n<p>Eller<\/p>\n<p>$ sudo watch ss -tulpn<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.linuxboxen.dk\/wp-content\/uploads\/2019\/12\/netstat1-768x759.png\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" srcset=\"https:\/\/www.linuxboxen.dk\/wp-content\/uploads\/2019\/12\/netstat1-768x759.png 768w, https:\/\/www.linuxboxen.dk\/wp-content\/uploads\/2019\/12\/netstat1-273x270.png 273w, https:\/\/www.linuxboxen.dk\/wp-content\/uploads\/2019\/12\/netstat1-300x296.png 300w, https:\/\/www.linuxboxen.dk\/wp-content\/uploads\/2019\/12\/netstat1-1024x1012.png 1024w, https:\/\/www.linuxboxen.dk\/wp-content\/uploads\/2019\/12\/netstat1.png 1094w\" alt=\"\" width=\"640\" height=\"633\" \/><\/p>\n<p>Du stopper dem med CTRL+C<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>For at se alle \u00e5bne porte i linux bruges en kommando som hedder netstat. netstat kan rigtig mange ting. $ netstat -tulpn &#8211;statistics IcmpMsg: InType0: 2 InType3: 32032 InType8: 31145 InType11: 694 InType13: 11 OutType0: 31145 OutType3: 68998 OutType14: 11 Tcp: 980530 active connections openings 199881 passive connection openings 1171 failed connection attempts 1558 connection [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"categories":[2],"tags":[],"class_list":["post-901","post","type-post","status-publish","format-standard","hentry","category-tips"],"a3_pvc":{"activated":false,"total_views":0,"today_views":0},"_links":{"self":[{"href":"https:\/\/www.linuxboxen.dk\/index.php?rest_route=\/wp\/v2\/posts\/901","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linuxboxen.dk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linuxboxen.dk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linuxboxen.dk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linuxboxen.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=901"}],"version-history":[{"count":0,"href":"https:\/\/www.linuxboxen.dk\/index.php?rest_route=\/wp\/v2\/posts\/901\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.linuxboxen.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=901"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linuxboxen.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=901"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linuxboxen.dk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=901"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}