Manuel d'utilisation / d'entretien du produit 9535 du fabricant Intel
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DMZ Firewall Solution Intel Express Route rs 9515, 9525 an d 9535.
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DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 2 Table of Contents 1 Introduction ............................................................................................................................ 3 1.1 About This Document .
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 3 1 Introduction 1.1 A bout This Document This docum ent explains h ow to config ure a secure I nternet solution u sing the se cond LAN interface of the I ntel Express router as a DMZ.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 4 The purpose of this se tup is to p rohibit any direct da ta transm ission betwee n the I nternet and the secure ne twork.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 5 2.2 Routing Setup Do not use R IP on the WAN interf ace or the D MZ in terface. This prev ents intr uders from corrupting the rou ting table.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 6 3 DMZ Single IP A ddress Solution This solu tion explains h ow to set up a D MZ solut ion when the I nternet serv ice provide r (ISP) has assigned a single I P address to y our netwo rk.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 7 Note The order o f the NA T en tries is importan t. NAT entr ies are de fined as f ollows : Entry Functi on Settings 1 Directs all in coming HTTP requests to the Web server. Mapping type: Static Po rt (Sing le IP) Internal a ddress: 10.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 8 Filters are de fined as fol lows: Filter Functi on Settings — Prohibit use rs on th e secure ne twork access to th e I nternet Default Action: Discar d 1 Allows access to t he HTTP /F TP proxy serv er on the DMZ .
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 9 Filter Functi on Settings Src. address : 10.2.0.2 Src. port: = 80 2 Allows FTP (on ly passiv e connections ) from secur e LAN to the F TP proxy server on the DMZ (see note 1). Two filte rs are req ui red.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 10 Filter Functi on Settings Dest. address : 10.5.0.2 Dest. port: > 1023 Src. addre ss type: Host Src. address : 10.2.0.4 Src. port: = 119 8 Sends all pack ets genera ted by the r outer to the se cure LAN (LA N1).
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 11 Filters are de fined as fol lows: Filter Functi on Settings — Pass all pack ets dest ined for D MZ Default A ction: Pass 1 Prevents RI P updates from entering the DMZ network Acti on: Discar d Protocol: UDP Dest.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 12 Filter Functi on Settings Scr. addre ss type: Host Src. address : <LAN1 I P address> Src. port : All 9 Discards all I CMP packets en tering th e DMZ network . This prev ents the ro uter from repor ting the I P netm ask.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 13 3.3.3 Internet Co nnection Fi lters 3.3.3.1 Receive (Rx) Filters on the connection to the Interne t Configure these rece ive fil ters for the Intern et connect ion, shown as th ey appear in Adva nced Setup .
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 14 Filter Functi on Settings 2 Allows FTP (bo th activ e and passiv e) from the I nterne t to the H TTP/F TP server on the DMZ . Three fi lters are r equired. Action : Pass Protocol: TCP TCP flags: All Dest.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 15 Filter Functi on Settings Dest. address : 10.2.0.2 Dest. port > 1023 Src. addre ss type: All Src. port: > 1023 9 Allows D NS reply to the HT TP/F TP proxy serv er on the DMZ .
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 16 Filter Functi on Settings Dest. addr ess type: Host Dest. address : 10.2.0.3 Dest. port > 1023 Src. addre ss type: All Src. port: = 25 15 Allows incom ing News (NNTP) from a specified external N ews serv er to the DMZ (see no te 2).
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 17 4 DMZ Multiple IP A ddress Solution This solu tion explains h ow to set up a D MZ when the I SP supplies y ou with mult iple IP addresses. I n the exam ple, the I SP has assig ned the si te a range o f IP addresses: 193.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 18 4.3 Network Address Trans lation (NA T) Because the se cure priv ate netwo rks on LAN1 use public IP addresses (8 9.20.0.0 and 90.20.0.0 ), configure N AT to tr anslate t hese addres ses to priv ate I P addresses.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 19 Filters are de fined as fol lows: Filter Functi on Settings — Prohibit interna l users acc ess to the Int e r ne t Defaul t Action: Defaul t 1 Allow s access to the H TTP /FTP pro xy server on the DMZ .
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 20 Filter Functi on Settings Src. port: = 80 2 Allows F TP (only pass ive conne ctions) from secur e LAN to the F TP proxy server on the DMZ (see note 1). Two filte rs are req ui red. Action : Pass Protocol: TCP TCP flags: ACK Dest.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 21 Filter Functi on Settings Dest. port: > 1023 Src. addre ss type: Host Src. address : 193.84.251.4 Src. port: 119 8 Sends a ll packets g enerated by the router to t he intern al LAN (LAN1 ).
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 22 Filter Functi on Settings Src. addre ss type: All Src. port: All 2 Prev ents tunnel p ackets from entering the DMZ network Acti on: Discar d Protocol: TCP Dest. addr ess type: All Dest port: Tunnel Src.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 23 Filter Functi on Settings 9 Discards all I CMP packets en tering th e DMZ network . This prev ents the ro uter from repor ting the I P netm ask. These filters m ust inc lude all I P addresses on the router, including the WAN IP address if the rou ter is usin g num bered links.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 24 4.4.2. 2 Transmit (Tx) filters on LAN2 Set the de fault ac tion to Pass . 4.4.3 Internet Co nnection Fi lters 4.4.3.1 Receive (Rx) Filters on the Connection to the Internet The requi red receiv e filters f or the I nternet connection, s hown as they appear in Advanced Setup .
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 25 Filter Functi on Settings Src. port: > 1023 2 Allows F TP (both act ive and pass ive) from the I nterne t to the H TTP/F TP server on the DMZ . Three fi lters are r equired. Action : Pass Protocol: TCP TCP flags: All Dest.
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 26 Filter Functi on Settings Dest. addr ess type: Host Dest. address : 193.84.251.2 Dest. port > 1023 Src. addre ss type: All Src. port: = 21 9 Allow s DNS r eply to the HTTP /FTP proxy serv er on the DMZ .
DMZ Firewall Solution fo r the Express Router 07-12-99 Version 1.0 27 Filter Functi on Settings 14 Allows outg oing m ail (SMTP) to any host on th e Interne t from the DMZ. Action : Pass Protocol: TCP TCP flags: ACK Dest. addr ess type: Host Dest. address : 193.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Intel 9535 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Intel 9535 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Intel 9535, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Intel 9535 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Intel 9535, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Intel 9535.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Intel 9535. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Intel 9535 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
