{"id":183380,"date":"2019-06-03T14:19:04","date_gmt":"2019-06-03T14:19:04","guid":{"rendered":"https:\/\/www.actcom.dk\/vigtige-firewallregler\/"},"modified":"2023-11-23T13:37:10","modified_gmt":"2023-11-23T13:37:10","slug":"vigtige-firewallregler","status":"publish","type":"post","link":"https:\/\/www.actcom.dk\/da\/vigtige-firewallregler\/","title":{"rendered":"Vigtige firewallregler"},"content":{"rendered":"\t\t
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For nemheds skyld antager vi f\u00f8lgende konfiguration:<\/h3>

Det sprinklede netv\u00e6rkssegment modtager netv\u00e6rksadressen\u00a010.10.20.<\/mark>0 \/24<\/mark>\u00a0tildelt, det omgivende netv\u00e6rk modtager netv\u00e6rksadressen\u00a010.10.10.<\/mark>0 \/24<\/mark>,
Enheden p\u00e5 \u00f8en har altid IP-adressen i de f\u00f8lgende regler\u00a010.10.20.\u00a020<\/b><\/mark>, enheden i det omgivende netv\u00e6rk har IP-adressen\u00a010.10.10.\u00a010<\/b><\/mark>,<\/p>

TABS viser forskellige ops\u00e6tninger af protokoller:<\/h3>

Filadgang fra \u00f8-computeren til en filserver (NetBIOS)
Deling af Windows File Access TCP \/ IP<\/h3>

Filadgang er via SMB-protokollen. For at g\u00f8re dette skal den overv\u00e6ldede v\u00e6rt etablere en TCP-forbindelse til port 445 p\u00e5 filserveren. Hvis adgangen sker direkte via filserverens IP-adresse, er denne regel tilstr\u00e6kkelig.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: Alle<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 445<\/b><\/td><\/tr><\/tbody><\/table>

Filadgang fra \u00f8computeren til en filserver (NetBIOS)<\/h3>

Skal \u00e6ldre kontrol computer – for eksempel p\u00e5 grundlag af Windows XP – kan f\u00e5 adgang til Windows-netv\u00e6rk, du har brug for i till\u00e6g til TCP port 445 ogs\u00e5 tillade en session-baserede NetBIOS transport protokol p\u00e5 port 139 \/ TCP.<\/p>

Bem\u00e6rk venligst at disse gamle operativsystemversioner er usikre!<\/span><\/p>

Regel 1: L\u00f8sning af NetBIOS Session ServiceTillad datatransport via den forbindelsesorienterede sessionstjeneste.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: Alle<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 139<\/b><\/td><\/tr><\/tbody><\/table>

Regel 2: Deling af filadgang<\/h3>

Opret TCP-forbindelse til port 445 p\u00e5 filserveren.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: Alle<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 445<\/b><\/td><\/tr><\/tbody><\/table>

Tillad navneopl\u00f8sning via DNS
L\u00f8s v\u00e6rtsnavne via DNS<\/h3>

Ved hj\u00e6lp af Domain Name System (DNS) f\u00e5r du IP-adressen til en computer, der er adresseret via computernavnet. Dette er en kort dataudveksling over UDP.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: Alle<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 53<\/b><\/td><\/tr><\/tbody><\/table>

\u00a0<\/p>

F\u00e5 nuv\u00e6rende tid via netv\u00e6rk (NTP)
Tid opdateringer med (S) NTP via UDP<\/h3>

Tidsservere leverer den aktuelle tid via SNTP (Network Network Protocol) eller Net Time Protocol (NTP).<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: Alle<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 123<\/b><\/td><\/tr><\/tbody><\/table>

Adgang til en webgr\u00e6nseflade i \u00f8-netv\u00e6rket
Tillad ukrypteret HTTP<\/h3>

For at f\u00e5 adgang til ukrypterede websider skal TCP port 80 normalt \u00e5bnes.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: 80<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: Alle<\/b><\/td><\/tr><\/tbody><\/table>

(Alternativ): Tillad krypteret HTTPS<\/h3>

For at f\u00e5 adgang til krypterede websider skal TCP port 443 \u00e5bnes som regel.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: 443<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: Alle<\/b><\/td><\/tr><\/tbody><\/table>

E-mail afsendelse fra \u00f8en netv\u00e6rk
F\u00f8lgende regler antager, at postservernes IP-adresser er kendt.<\/h3>

Send e-mails via SMTP (med \/ uden StartTLS)Ikke-krypteret og StartTLS-beskyttet e-mail-transmission via SMTP.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: Alle<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 587<\/b><\/td><\/tr><\/tbody><\/table>

(Alternativ): Send e-mails via SMTPS<\/h3>

Krypteret e-mail-transmission via SMTPS.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: Alle<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 465<\/b><\/td><\/tr><\/tbody><\/table>

F\u00e5 adgang til e-mails fra \u00f8en via IMAP<\/h3>

Adgang til e-mail-konti via IMAP (med \/ uden StartTLS)
F\u00e5 adgang til e-mail-konti fra \u00f8en – ukrypteret eller beskyttet af StartTLS.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: Alle<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 142<\/b><\/td><\/tr><\/tbody><\/table>

(Alternativ): Adgang til e-mails via IMAPS (med \/ uden StartTLS)<\/h3>

F\u00e5 adgang til e-mail-konti fra \u00f8en, TLS-beskyttet.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: Alle<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 992<\/b><\/td><\/tr><\/tbody><\/table>

Send en SNMP-Trap fra \u00f8en<\/h3>

Ikke-krypteret SNMP-Trap fra \u00f8en<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Tillad returretning : nej<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 162<\/b><\/td><\/tr><\/tbody><\/table>

SNMP afstemning udefra
Tillad ukrypteret SNMP-afstemning af en leder udenfor \u00f8en<\/h3>

En SNMP-leder kan f\u00e5 adgang til \u00f8en for at hente v\u00e6rdier i afstemningsproceduren.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Tillad\u00a0returretning\u00a0: ja
SNMP: ja<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 161<\/b><\/td><\/tr><\/tbody><\/table>

F\u00e5 adgang til en \u00f8enhed via Secure Shell<\/h3>

SSH forbindelse til \u00f8en
Med en krypteret terminal session kan du styre en computer p\u00e5 \u00f8en.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: 22<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: Alle<\/b><\/td><\/tr><\/tbody><\/table>

IoT kommunikation via MQTT m\u00e6gler
MQTT forbindelse til \u00f8en<\/h3>

MQTT er en standardprotokol for tingets internet. Meddelelser kan ogs\u00e5 udveksles p\u00e5 tv\u00e6rs af \u00f8erne via en MQTT-m\u00e6gler.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: Alle<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: 1883<\/b><\/td><\/tr><\/tbody><\/table>

Query MySQL database p\u00e5 \u00f8en
Opret forbindelse til databaseserver p\u00e5 \u00f8en<\/h3>

Hvis en databaseserver p\u00e5 \u00f8en skal foresp\u00f8rges, skal TCP port 3306 frigives.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: 3306<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: Alle<\/b><\/td><\/tr><\/tbody><\/table>

W & T – Tillad Box 2 Box Mode (Web-IO Digital 4.0)
Forbindelse med box-2-box slave p\u00e5 \u00f8en<\/h3>

For at etablere en Box 2 Box-forbindelse til en \u00f8-enhed skal du bruge en af \u200b\u200bde to Box 2 Box Slave-porte.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port:\u00a049157, 49158<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: Alle<\/b><\/td><\/tr><\/tbody><\/table>

W & T – Tillad OPC adgang (Web-IO Digital 4.0)
Tillad adgang til W & T OPC-serveren<\/h3>

For at erhverve \u00f8en enheder p\u00e5 W & T OPC serveren, skal du frigive TCP port 49159.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: 49159<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: Alle<\/b><\/td><\/tr><\/tbody><\/table>

Tillad W & T ASCII-protokol (Web-IO Digital 4.0)
Tillad adgang via W & T ASCII-protokollen<\/h3>

Ved at udveksle enkle kommandostreng kan input og t\u00e6llere l\u00e6ses fra web-IOS eller output kan indstilles.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: 42280<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: Alle<\/b><\/td><\/tr><\/tbody><\/table>

W & T – Tillad bin\u00e6r protokol
Tillad adgang til bin\u00e6re servere i \u00f8-segmentet<\/h3>

Den W & T bin\u00e6re tilstand tillader flere TCP-forbindelser mellem enheder.<\/p>
\u00d8ens netv\u00e6rk<\/strong><\/td>TCP<\/strong><\/td>Omliggende netv\u00e6rk<\/strong><\/td><\/tr>
IP: 10.10.20.20 <\/strong>
Port: 49153 – 49156<\/strong><\/td>		\"\"<\/td>IP 10.10.10.10
Port: Alle<\/b><\/td><\/tr><\/tbody><\/table>

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\n\t\t\t\tRouter\/Firewall\t\t\t<\/h3>\n\n\t\t\t\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t4 products\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t<\/div>\n\n\t\t\t\t<\/a>\n\t\t\t<\/div>\n\n\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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at konfigurere W & T Microwall<\/h3>\n

Disse standard firewall regler hj\u00e6lper dig med at\u00a0implementere\u00a0typiske applikationer af\u00a0Microwall<\/a>\u00a0.<\/b><\/p>\n","protected":false},"author":7,"featured_media":183381,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[434],"tags":[],"class_list":["post-183380","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applikationer-for-netvaerk"],"acf":[],"yoast_head":"\nVigtige firewallregler - actcom<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.actcom.dk\/da\/vigtige-firewallregler\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vigtige firewallregler\" \/>\n<meta property=\"og:description\" content=\"at konfigurere W & T Microwall Disse standard firewall regler hj\u00e6lper dig med at\u00a0implementere\u00a0typiske applikationer af\u00a0Microwall\u00a0.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.actcom.dk\/da\/vigtige-firewallregler\/\" \/>\n<meta property=\"og:site_name\" content=\"actcom\" \/>\n<meta property=\"article:published_time\" content=\"2019-06-03T14:19:04+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-11-23T13:37:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.actcom.dk\/wp-content\/uploads\/2019\/06\/fc50ce82f09f85f3c2e508b03860412c_XL.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"366\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Jens Brogaard\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Skrevet af\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jens Brogaard\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimeret l\u00e6setid\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutter\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.actcom.dk\\\/da\\\/vigtige-firewallregler\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.actcom.dk\\\/da\\\/vigtige-firewallregler\\\/\"},\"author\":{\"name\":\"Jens Brogaard\",\"@id\":\"https:\\\/\\\/www.actcom.dk\\\/da\\\/#\\\/schema\\\/person\\\/02450ece20a4f695e21026eb1c19e51e\"},\"headline\":\"Vigtige firewallregler\",\"datePublished\":\"2019-06-03T14:19:04+00:00\",\"dateModified\":\"2023-11-23T13:37:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.actcom.dk\\\/da\\\/vigtige-firewallregler\\\/\"},\"wordCount\":843,\"publisher\":{\"@id\":\"https:\\\/\\\/www.actcom.dk\\\/da\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.actcom.dk\\\/da\\\/vigtige-firewallregler\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.actcom.dk\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/fc50ce82f09f85f3c2e508b03860412c_XL.jpg\",\"articleSection\":[\"Applikationer for netv\u00e6rk\"],\"inLanguage\":\"da-DK\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.actcom.dk\\\/da\\\/vigtige-firewallregler\\\/\",\"url\":\"https:\\\/\\\/www.actcom.dk\\\/da\\\/vigtige-firewallregler\\\/\",\"name\":\"Vigtige firewallregler - 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