Manuale d’uso / di manutenzione del prodotto DFL-160 del fabbricante D-Link
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User Manu al DFL-160 V er 1.00 Network Security Sol ution http://www .dlink.com.tw Security Security SOHO UTM F irewall.
User Manual D-Link DFL-160 Firewall NetDefendOS Version 2.25 D-Link Corporation No. 289, Sinhu 3rd Rd, Neihu District, Taipei City 114, Taiwan R.O.C. http://www.
User Manual D-Link DFL-160 Firewall NetDefendOS Version 2.25 Published 2009-05-14 Copyright © 2009 Copyright Notice This publication, including all photographs, illustrations and software, is protected under international copyright laws, with all rights reserved.
Table of Contents 1. Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1. The DFL-160 Solution .
C. Apple Mac IP Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 D. D-Link Worldwide Offices . . . . . . . . . . .
Chapter 1. Product Overview • The DFL-160 Solution, page 5 • Ethernet Interfaces, page 7 • The LED Indicators, page 9 1.1. The DFL-160 Solution The NetDefend SOHO UTM product is a D-Link hardwar.
"Inside" and "Outside" Networks The NetDefendOS provides the administrator with the ability to control and manage the traffic that flows between the trusted "inside" networks and the much more threatening public Internet that lies "outside".
1.2. Ethernet Interfaces Physical Interface Arrangement The DFL-160 has a number of physical Ethernet interfaces which can be used to plug into other Ethernet networks.
are intended for connection to local, internal networks which will be protected from the outside internet by the highest security available from the DFL-160. Interfaces LAN1 to LAN4 are connected together via a switch fabric in the DFL-160 which means that traffic travelling between them will not be subject to the control of NetDefendOS.
1.3. The LED Indicators On the front portion of the DFL-160 casing are a set of indicator lights which show system status and Ethernet port activity. Power and Status The power light is illuminated wh.
1.3. The LED Indicators Chapter 1. Product Overview 10.
Chapter 2. Initial Setup • Unpacking, page 11 • Web Browser Connection, page 13 • Browser Connection Troubleshooting, page 18 • Console Port Connection, page 19 2.1. Unpacking Package Contents Carefully open the product packaging and inside you will find the following: • The DFL-160 hardware unit.
Environmental and Operating Parameters The following table lists the key environmental and operatíng parameters for the DFL-160 hardware. Parameter DFL-160 Value AC Input 100-240 VAC, 50/60 Hz, Exter.
2.2. Web Browser Connection This section describes the steps for accessing a DFL-160 for the first time through a web browser. The user interface accessed in this way is known as the NetDefendOS Web Interface (or WebUI ).
4. Connect to the DFL-160 by Surfing to the IP address 192.168.10.1 Using a web browser (Internet Explorer or Firefox is recommended), surf to the IP address 192.168.10.1 . This can be done using either HTTP or the more secure HTTPS protocol in the URL.
The available management web interface language options are selectable at the bottom of this dialog. This defaults to the language set for the browser if NetDefendOS supports that language.
of time is fixed. After automatic logout occurs, the next interaction with the management web interface will take the browser to the login page. Connecting to the Internet In the typical DFL-160 installation the next step is to connect to the public Internet.
features of the product and bring into use those which meet the needs of a particular installation. It is recommended that adminstrators familiarize themselves with the web interface by clicking on the main menu options and exploring the individual options available with each.
2.3. Browser Connection Troubleshooting If the management interface does not respond after the DFL-160 has powered up and NetDefendOS has started, there are a number of simple steps to trouble shoot basic connection problems: 1.
2.4. Console Port Connection Initial setup of the DFL-160 can be done using only the web interface but DFL-160 also provides a Command Line Interface (CLI) which can be used for certain administrative tasks. This is accessed through a console connected directly to the unit's RS232 COM port, which is shown below.
buffer allocated for output. This buffer limit means that a single large volume of console output may be truncated. This happens rarely and only with certain commands. The DFL-160 USB Port Next to the RS232 port is a USB port. This port is not used with the current version of NetDefendOS.
2.4. Console Port Connection Chapter 2. Initial Setup 21.
Chapter 3. The System Menu • Administration, page 22 • Internet Connection, page 25 • LAN Settings, page 27 • DMZ Settings, page 30 • Logging, page 33 • Date and Time, page 35 • Dynamic DNS Settings, page 37 The System menu options allow the administrator to control and manage essential operating settings of the DFL-160.
The recommendation is to restrict the interfaces which allow management access and to always use the HTTPS protocol to ensure that management communication is encrypted. The only advantage in using HTTP for management access is to avoid the issue with certificates.
For instance, if HTTPS is used for management access and HTTPS inbound traffic is enabled (this is done in Section 4.3, “Inbound Traffic Options”) then both will use the port number 443 and there will be a problem. The port number for management traffic and normal HTTPS traffic must be unique.
3.2. Internet Connection The options on this page allow the administrator to specify the communications protocol with which the WAN interface is connected to the public Internet via an Internet Service Provider (ISP). Your ISP will provide details of their connection.
The Idle Timeout is the length of time with inactivity that passes before PPPoE disconnection occurs if the Dial-on-Demand is selected. DNS servers are set automatically after connection with PPPoE. D. PPTP Connection With this option, the username and password supplied by your ISP for PPTP connection should be entered.
3.3. LAN Settings The settings in this part of the management web interface determine how the DFL-160's LAN interface operates. These settings are very similar to the corresponding page for the DMZ interface (see Section 3.4, “DMZ Settings”).
• NAT Mode This mode enables Dynamic Network Address Translation (NAT) use between the LAN and WAN interfaces. This means that the individual IP addresses of hosts on the LAN interface will be hidden from the public internet.
with a particular MAC address. When a request for a DHCP lease is received on the interface, NetDefendOS checks the MAC address of the requesting DHCP client against the list. If a match is found, the IP address that has been associated with the MAC address is the one that is handed out.
3.4. DMZ Settings The settings in this part of the management web interface determine how the DFL-160's DMZ interface operates. These settings are very similar to the corresponding page for the LAN interface (see Section 3.3, “LAN Settings”).
• Router Mode This is the mode used if NAT is not used. It means that each the individual hosts and users on the DMZ network need their own public IP addresses if they are to communicate with the public Internet.
This feature allows the same IP address to be always allocated to a particular DHCP client. Transparent Mode and the Interface IP Address There are some considerations that should be noted with the DMZ IP address when transparent mode is enabled: • In transparent mode, the DMZ interface will take on the same IP address as the WAN interface.
3.5. Logging NetDefendOS Log Messages During NetDefendOS operation, log messages are routinely generated to indicate when certain events occur. These messages form an important audit trail that show what has occurred during system operation and can dealt with in various ways.
messages generated by NetDefendOS. By enabling this option, these log messages will be included. C. Email Alerts NetDefendOS can be configured to send emails to up to three email addresses when log messages are generated that are equal to or exceed a defined threshold.
3.6. Date and Time A variety of NetDefendOS functions depend on the system date and time being set correctly for the DFL-160. It is therefore recommended to set the correct time and date as soon as possible. There are three time and date options: A. General B.
When usage of time servers is enabled, NetDefendOS will poll them on a regular basis and then adjust the DFL-160 system clock with the exact time. If the time server and the current time differ by more than one hour (60 minutes) then the time server is ignored.
3.7. Dynamic DNS Settings A DNS feature offered by NetDefendOS is the ability to explicitly inform DNS servers when the external IP address of the DFL-160 has changed. This is sometimes referred to as Dynamic DNS (DDNS) and is useful where the DFL-160 has an external IP address that can change.
3.7. Dynamic DNS Settings Chapter 3. The System Menu 38.
Chapter 4. The Firewall Menu • Outbound LAN Traffic Options, page 40 • Outbound DMZ Traffic Options, page 42 • Inbound Traffic Options, page 44 • VPN Options, page 46 • VPN Users, page 51 .
against internal resources. • Time schedules can be set up which can be then used to specify the times when security policies are applied. • Lists of users that are allowed to access protected resources can be specified. The sections that follow describe the options in this menu in the order they appear.
For a custom protocol it is necessary to specify if the protocol uses TCP or UDP connections or both and to specify the port number the protocol will try and connect to at the other end of the connection.
4.2. Outbound DMZ Traffic Options The Meaning of Outbound These options determine what types of traffic can pass between the DMZ network and the WAN interface when the connection is initiated by a client or host on the DMZ network.
Specifying a Schedule A named Schedule can be defined through the Firewall > Schedules menu option and this can then be used with any individual protocol allowed for outgoing traffic from the LAN interface. Schedules specify a period of time when a particular selection is valid.
4.3. Inbound Traffic Options This set of NetDefendOS options deals using firewalling to protect against inbound traffic. The term inbound refers to connections that are initiated from the public Internet on the WAN interface.
C. Custom Traffic If a particular protocol does not appear in the standard list of protocols then a Custom Traffic "rule" can be created which allows incoming TCP or UDP traffic through on a specified port.
4.4. VPN Options VPN Usage The Internet is increasingly used as a means to connect together computers since it offers efficient and inexpensive communication. The requirement therefore exists for data to traverse the Internet to its intended recipient without another party being able to read or alter it.
In summary, a VPN allows the public Internet to be used for setting up secure communications or tunnels between DFL-160s or between a DFL-160 and other security gateway devices or clients. VPN with the DFL-160 NetDefendOS supports setting up tunnels using the following types of tunnel protocols for secure communication: • IPsec tunnels.
• IKE negotiates how IKE should be protected. • IKE negotiates how IPsec should be protected. • An IPsec tunnel is established which is used to securely transport data. The following sections are used in the web interface for IPsec setup: A. General B.
Currently established IPsec tunnels can be listed and their usage examined through the IPsec option in the Status menu (see Section 6.8, “IPsec Status”). 4.4.2. L2TP/PPTP Client This option allows a tunnel to be set up where the DFL-160 acts as a L2TP or PPTP client.
The Idle Timeout is the length of time with inactivity that passes before tunnel disconnection occurs. 4.4.3. L2TP/PPTP Server This option allows VPN tunnels to be set up based on the L2TP protocol, where the DFL-160 acts as a L2TP or PPTP server, receiving connection requests from external clients.
4.5. VPN Users The User Database This page in the web interface allows the administrator to enter the details of new users into the NetDefendOS user database and to also administer these users by making deletions or changes. There is no limit on the database size.
4.6. Web Content Filtering 4.6.1. Options The Web Content Filtering (WCF) options allow control over the types of web surfing allowed by clients on the LAN or DMZ . When web browsers try to access a URL on the public Internet through the WAN interface, NetDefendOS checks the URL against a D-Link URL database to find out what category it is.
B. Web Content Filter The option here is to enable or disable web content filtering. Note that HTTP and HTTPS traffic (or all traffic) should be allowed in the outgoing traffic options for the LAN or DMZ interfaces for clients on those networks to able to reach the public Internet.
It is possible to explicitly allow or explicitly block certain URLs by adding one or more Static URL Filters . This is also referred to as whitelisting and blacklisting and the URLs specified in such filters are not looked up by the WCF subsystem.
online news publications and technology or trade journals. This does not include financial quotes, refer to the Investment Sites category (11), or sports, refer to the Sports category (16). Examples might be: • www.newsunlimited.com • www.dailyscoop.
form of entertainment that is not specifically covered by another category. Some examples of this are music sites, movies, hobbies, special interest, and fan clubs.
A web site may be classified under the E-Banking category if its content includes electronic banking information or services. This category does not include Investment related content; refer to the Investment Sites category (11). Examples might be: • www.
Category 18: Violence / Undesirable A web site may be classified under the Violence / Undesirable category if its contents are extremely violent or horrific in nature. This includes the promotion, description or depiction of violent acts, as well as web sites that have undesirable content and may not be classified elsewhere.
A web site may be classified under the Music Downloads category if it provides online music downloading, uploading and sharing facilities as well as high bandwidth audio streaming.
Category 29: Computing/IT A web site may be classified under the Computing/IT category if its content includes computing related information or services.
4.7. Anti-Virus Overview The NetDefendOS Anti-Virus module protects against malicious code carried in file downloads. Files may be downloaded as part of a web-page in an HTTP transfer or in an FTP download or perhaps as an attachment to an email delivered through SMTP.
leader in the field of virus detection. The database provides protection against virtually all known virus threats including trojans, worms, backdoor exploits and others.
the exclusion list such a file might not be scanned. To avoid this situation, NetDefendOS always performs MIME checking where it looks inside the file to determine what the true filetype of the data is. Only if the filetype determined by MIME checking is on the exclude list is virus scanning skipped.
4.8. IDP Options The Intrusion Threat Computer servers can sometimes have vulnerabilities which leave them exposed to attacks carried by network traffic. Worms, trojans and backdoor exploits are examples of such attacks which, if successful, can potentially compromise or take control of a server.
Enabling IDP for a Protocol The IDP page of the NetDefendOS web interface lists a set of protocols which can be scanned by the IDP subsystem. Selecting any of the protocols switches on IDP scanning. Dropping Connections or Only Logging When IDP is enabled, the administrator has two options for how detected intrusions are dealt with: • Log only.
This category is similar to Scanners in that it is not protocol specific but provides an additional "catch all" protection against intrusion attempts that are not specific to a particular protocol.
4.9. Schedules Schedules are used to determine when certain features in NetDefendOS are enabled. For instance, it may be decided to allow web surfing from clients on the LAN interface only at certain times of the day.
The comments field allows some text explanation to be added to the schedule. It serves only as a reminder to the administrator what the schedule was intended for.
4.9. Schedules Chapter 4. The Firewall Menu 69.
Chapter 5. The Tools Menu • Ping, page 70 The Tools menu provide access to features which can be helpful in overall system operation. The sections that follow describe the options in this menu in the order they appear. 5.1. Ping The ICMP ping protocol provides a simple query/response tool to determine if a particular network component is alive.
5.1. Ping Chapter 5. The Tools Menu 71.
Chapter 6. The Status Menu • System Status, page 73 • Logging Status, page 75 • Anti-Virus Status, page 76 • Web Content Filtering Status, page 77 • IDP Status, page 78 • Connections Statu.
6.1. System Status The System Status page is the default page that is shown when the web interface opens after logging in to NetDefendOS as administrator. The status display is divided into three parts: A. System Resources B. UTM Statistics C. Log History A.
Clicking the More... link in the display will take you to the Logging option in the System menu for a more complete list of recent events and the filters to analyze them. The details of NetDefendOS logging can be found in Section 3.5, “Logging”. 6.
6.2. Logging Status Various events that occur in NetDefendOS cause log messages to created. All possible log messages generated are documented in the accompanying DFL-160 Log Message Reference Guide . An external SysLog server can be configured to receive these events, as described in Section 3.
6.3. Anti-Virus Status This page of the web interface provides the ability to view and filter out the last 500 log messages generated by just the Anti-Virus subsystem. These same messages can also appear mixed in with other messages in the Logging page in the Status menu (described in Section 6.
6.4. Web Content Filtering Status This page of the web interface provides the ability to view and filter out the last 500 log messages generated by just the Web Content Filtering (WCF) subsystem. These same messages can also appear mixed in with other messages in the Logging page in the Status menu (described in Section 6.
6.5. IDP Status This page of the web interface provides the ability to view and filter out the last 500 log messages generated by just the IDP subsystem. These same messages can also appear mixed in with other messages in the Logging page in the Status menu (described in Section 6.
6.6. Connections Status A connection in NetDefendOS refers to either a normal TCP/IP connection set up to perform a transfer of data or a UDP packet based "connection", where a stream of packets is being sent from a sender to a receiver (such as in a streaming video transfer).
6.7. Interfaces Status This option can show the current status for each of the DFL-160 interfaces. When one of the interfaces is selected from a drop-down box in this page, information about the interface's status is displayed, both in numerical and graphical form.
Secondly, the statistics for received (incoming) traffic are shown over the last 24 hours. An example is shown below (the image is also truncated on the right side).
6.8. IPsec Status List VPN Interfaces This option (the default) shows all the currently established VPN tunnels (also known as VPN interfaces ). An example of this display is shown below.
6.9. User Authentication Status This page of the web interface displays the users who have been authenticated and are using a VPN tunnel. An example of the user authentication display is shown below. The Forcibly Logout Option For each user, the administrator has the option to force a logout of a user with this option.
6.10. Routes A Brief Overview of Routing A list of all routes are maintained by NetDefendOS in its internal routing table . The routing table indicates which networks can be found on which interface.
6.11. DHCP Server Status As explained in Section 3.3, “LAN Settings” and Section 3.4, “DMZ Settings”, the LAN and DMZ interfaces can be configured to act as DHCP servers, allocating IP addresses from a predefined IP range to any users or hosts that require them.
6.11. DHCP Server Status Chapter 6. The Status Menu 86.
Chapter 7. The Maintenance Menu • The Update Center, page 87 • Licenses, page 89 • Backups, page 91 • Reset to Factory Defaults, page 92 • Upgrades, page 93 • Technical Support, page 94 The Maintenance menu options deal with routine administrative tasks such as backups and software upgrades.
The default interval is Daily and this is recommended to keep the databases updated with the latest releases. It is not often that the databases are updated more than once in a day. C. History This tab shows the history of recent database updates and can also indicate if there were problems with server access or downloading.
7.2. Licenses The license page shows information about the current license installed in the DFL-160. When the DFL-160 is initially delivered it comes with a standard license preinstalled which determines the capabilities of the system.
• PPP Tunnels The maximum number of PPP tunnels which terminate at the WAN interface that can be created. To expand the capabilities of the standard product license, consult with your local D-Link representative.
7.3. Backups The administrator has the ability to take a snapshot of a NetDefendOS system at a given point in time and restore it when necessary. The snapshot can be of two types: • A configuration backup which does not include the installed NetDefendOS version.
7.4. Reset to Factory Defaults Reset Through Software A restore to factory defaults can be applied so that it is possible to return to the original hardware state that existed when the DFL-160 was shipped by D-Link.
7.5. Upgrades New releases of NetDefendOS are routinely made available by NetDefendOS. These releases are available as a single file which can be uploaded to the DFL-160 through this page in the web interface. NetDefendOS upgrades can be downloaded for free from your local D-Link site or from the D-Link NetDefend Center at http://security.
7.6. Technical Support This section of the web interface allows the user to easily download a file of useful troubleshooting information that can be emailed to technical support personnel.
7.6. Technical Support Chapter 7. The Maintenance Menu 95.
Chapter 8. The Console Boot Menu The NetDefendOS loader is the base software on top of which NetDefendOS runs and the administrator's direct interface to this is called the console boot menu (also known simply as the boot menu ). This section discusses the boot menu options.
A password should be set for console access. If a password is not set, anyone can use the console. After it is set, the console will prompt for the password before access is allowed to either the boot menu or the command line interface (CLI) (more on the CLI can be found in Appendix A, CLI Reference ).
Chapter 9. Troubleshooting When the DFL-160 does not behave as expected, the following CLI tools are available to troubleshoot problems. The stat CLI Command If a serious NetDefendOS problem is suspec.
' ' Although dconsole output may be difficult to interpret by the administrator, it can be emailed to D-Link support representatives for further investigation. The dconsole command supersedes the crashdump command found in earlier versions of NetDefendOS.
Appendix A. CLI Reference This section summarizes in alphabetical order the command set that can be entered through a console connected to the RS232 console port on the DFL-160. Details of how to connect up a console device to the console COM port on the DFL-160 can be found in Section 2.
Example: DFL-160:/> arpsnoop all ARP snooping active on interfaces: lan wan dmz ARP on wan: gw-world requesting wan_ip ARP on lan: 192.168.123.5 requesting lan_ip Buffers This command can be useful for troubleshooting.
Shows the contents of the most recently used buffer. Example: DFL-160:/> buff . Decode of buffer number 1059 lan: Enet 0050:dadf:7bbf > 0003:325c:cc00 type 0x0800 len 1058 IP 192.
Displays the contents of the file crashdump.dmp stored by NetDefendOS. The file contains critical diagnostic information which can help determine the reason for a critical system event. Syntax: crashdump Dconsole Displays a list of event information that is useful in pinpointing the occurrence of critical system errors.
Syntax: dns Options: -list - List pending DNS queries. -query=<domain-name> - Resolve domain name. -remove - Remove all pending DNS queries. Example: DFL-160:/> dns DNS client is initialized. Using servers: DNS Server 0 : 10.5.0.19 DNS Server 1 : Not set DNS Server 2 : Not set Frags Shows the 20 most recent fragment reassembly attempts.
HTTPPoster_URL3: Host : "" Port : 0 Path : "" Post : "" User : "" Pass : "" Status: (not configured) IfStat Syntax: ifstat Shows a list of the interfaces installed.
The Dropped counter in the software section states the number of packets discarded as the result of structural integrity tests or rule set drops. The IP Input Errs counter in the software section specifies the number of packets discarded due to checksum errors or IP headers broken beyond recognition.
Killsa Kills all IPsec and IKE SAs for the specified IP-address. Syntax: killsa <ipaddr> Example: DFL-160:/> killsa 192.168.0.2 Destroying all IPsec & IKE SAs for remote peer 192.168.0.2 License Shows the content of the license-file. Syntax: license Lockdown Sets local lockdown on or off.
using PBR table "main". Echo reply from 192.168.12.1 seq=0 time= 10 ms TTL=255 DFL-160:/> ping 192.168.12.1 -v Sending 1 ping to 192.168.12.1 from 192.168.14.19 using PBR table "main". ... using route "192.168.12.0/22 via wan, no gw" in PBR table "main" Echo reply from 192.
Proxy ARP on : Local IP : (use iface IP in ARP queries) Metric : 0 Flags : Rules Shows the contents of the Rules configuration section. Syntax: rules [<options>] [<range>] Options: -schedule - Filter out rules that are not currently allowed by selected schedules.
ARPExpireUnknown : 15 ARPMulticast : DropLog ARPBroadcast : DropLog ARPCacheSize : 4096 ARPHashSize : 512 ARPHashSizeVLAN : 64 Shutdown Instructs NetDefendOS to perform a shutdown in a given number of seconds. It is not necessary to perform a shutdown before the system is powered off.
(LBlock: 360424 bytes) 2003-04-24 00:03:46 Available KernelPoolMemory: 1048560 bytes (LBlock: 1048560 bytes) 2003-04-24 00:03:46 Available UserPoolMemory: 198868948 bytes 2003-04-24 00:03:46 Drive 0x0.
Database Version: 2 2006-10-04 10:13:18 HW Support: lc2350a Hardware DB Version: Latest Full:2006-10-04 10:13:18 Patch:N/A Status: Update server available Next update scheduled for: 2008-01-25 05:11:00 Urlcache Displays information related to the URL cache used by the Web Content Filtering function.
LocalUsers 2 DFL-160:/> userdb LocalUsers Contents of user database LocalUsers: Username Groups Static IP Remote Networks --------- ------- --------- --------------- bob sales alice tech DFL-160:/> userdb LocalUsers bob Information for bob in database LocalUsers: Username : bob Groups : sales Networks : Userdb Appendix A.
Appendix B. Windows IP Setup A Microsoft Windows PC can be used as the management workstation for initial setup of a DFL-160. Usually explicit configuration of the IP address of the PC's chosen Ethernet interface should not be needed since the DFL-160 automatically assigns the workstation's address using DHCP.
The assigned IP address 192.168.10.30 could, infact, be another address from the 192.168.10.0/24 network. However, 192.168.10.30 is normally used by D-Link as a convention.
Appendix C. Apple Mac IP Setup An Apple Mac can be used as the management workstation for setup of a DFL-160. Usually configuration of the IP address of the MAC's chosen Ethernet interface should not be needed since the DFL-160 automatically assigns the address using DHCP.
5. Now set the following values: • IP Address: 192.168.10.30 • Subnet Mask: 255.255.255.0 • Router: 192.168.10.1 6. Click Apply to complete the static IP setup. Note Your revision of MacOS may differ slightly from the screenshots shown above but the setup method should be principal.
Appendix D. D-Link Worldwide Offices Below is a complete list of D-Link worldwide sales offices. Please check your own country area's local website for further details regarding support of D-Link products as well as contact details for local support.
Italy Via Nino Bonnet n. 6/b, 20154 – Milano, Italy. TEL: 39-02-2900-0676, FAX: 39-02-2900-1723. Website: www.dlink.it LatinAmerica Isidora Goyeechea 2934, Ofcina 702, Las Condes, Santiago – Chile. TEL: 56-2-232-3185, FAX: 56-2-232-0923. Website: www.
Alphabetical Index A about CLI command, 100 administration, 22 username, 23 anti-virus, 61 status, 76 apple MAC IP setup, 116 arp CLI command, 100 arpsnoop CLI command, 100 audit username, 23 automati.
P phishing (see content filtering) ping, 70 ping CLI command, 70, 107 power LED, 9 PPTP client, 49 server, 50 pre-shared key with IPsec, 48 product support, 118 R reconfigure CLI command, 108 reset to.
FCC EMI for Class B Statements Battery Caution: VCCI WARNING Statement Appendix: Product Statement FCC Interference Information This device complies with Part 15 of the FCC Rules.
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 D-Link DFL-160 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 D-Link DFL-160 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso D-Link DFL-160 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul D-Link DFL-160 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il D-Link DFL-160, 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 D-Link DFL-160.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il D-Link DFL-160. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo D-Link DFL-160 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.
