Manuale d’uso / di manutenzione del prodotto 9535 del fabbricante 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 punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Intel 9535 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Intel 9535 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Intel 9535 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Intel 9535 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Intel 9535, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Intel 9535.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Intel 9535. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Intel 9535 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
