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Инструкция по эксплуатации Страница: 139

D-Link DFL-1000 [139/168] Configuring the external interface

DFL-1000 User Manual

Configuring the internal interface

Configuring the external interface

Use the following procedures to configure the external interface:

• Configuring the external interface with a static IP address

•

Configuring the external interface for DHCP

•

Configuring the external interface for PPPoE

•

Controlling management access to the external interface

•

Changing the external interface MTU size to improve network performance

Configuring the external interface with a static IP address

• Go to System > Network > Interface .

• For the external interface, select Modify

• Set Addressing mode to Manual.

• Change the IP address and Netmask as required.

• Select OK to save your changes.

Содержание

Building networks for people 1
D link dfl 1000 1
Network security firewall manual 1
Getting started 7 3
Introduction 0 3
Nat route mode installation 2 3
Table of contents 3
Transparent mode installation 7 3
Firewall configuration 1 4
Example policies 5 5
Ipsec vpns 6 5
Users and authentication 1 5
Ipsec vpn configuration examples 4 6
Logging and reporting 23 7
Pptp and l2tp vpns 03 7
Web content filtering 13 7
Administration 32 8
Glossary 56 9
Limited warranty 65 9
Registration 68 9
Technical support 62 9
Troubleshooting faqs 59 9
Firewall 10
Introduction 10
Web content filtering 10
Nat route mode 11
Transparent mode 11
Command line interface 12
Secure installation configuration and management 12
Web based manager 12
Configure port forwarding by configuring virtual ips 13
H 23 nat traversal 13
Ipsec vpn improvements 13
Logging and reporting 13
Multiple ip pools for each interface 13
Policy based nat 13
What s new in version 2 6 13
A checksum added to the v2 6 firmware image guarantees its integrity during a firmware update 14
Alert email 14
Checksum to protect upgrade image from corruption 14
Dfl 1000 logs are displayed with the last message at the top of the message list 14
In v2 6 you configure alert email from logging reporting you can configure the dfl 1000 npg to send alert email to report firewall or vpn events or violations see configuring alert email 14
Load balancing to balance the amount of traffic routed to each wan port for more information see configuring the dfl 1000 npg for multiple internet connections 14
Local dfl 1000 user database 14
Logging 14
Messages can be cleared from event log saved to memory 14
Multiple wan support 14
New cli commands 14
Redundancy using link detection if one wan connection fails the dfl 1000 npg re routes all traffic to and from the other wan connection 14
The command line interface has been extensively changed for v2 6 command syntax has been changed to be easier to use and more effective many command names and keywords have changed and cli help has been improved 14
The following logging features are new in v2 6 see logging and reporting 14
You can add user names to the local dfl 1000 user database when you add a user name you can specify a password or that the user can be authenticated using a radius server you can then add user names to user groups and make these user groups available for authenticating with firewall policies dialup vpn pptp vpn and l2tp vpn see users and authentication 14
You can configure the dfl 1000 npg to have multiple connections to the internet using routing and policies the dfl 1000 multiple wan feature supports 14
About this document 15
Customer service and technical support 15
For more information 15
Getting started 17
Package contents 17
Mounting 18
Powering on 18
A computer with an ethernet connection 19
A crossover cable or an ethernet hub and two ethernet cables to connect to the web based manager 19
Connecting to the web based manager 19
Initial configuration 19
Internet explorer version 4 or higher 19
Set the ip address of the computer with an ethernet connection to the static ip address 192 68 and a netmask of 255 55 55 19
The web based manager is the primary tool for installing and configuring your dfl 1000 npg configuration changes made with the web based manager are effective immediately without the need to reset the firewall or interrupt service to connect to the web based manager you need 19
When the dfl 1000 npg is first powered on it is running in nat route mode and has the basic configuration listed in dfl 1000 npg initial power on settings 19
Connecting to the command line interface cli 20
Next steps 21
Advanced nat route mode settings 22
Completing the configuration 22
Configuring your networks 22
Connecting to your networks 22
Nat route mode installation 22
Preparing to configure nat route mode 22
This chapter describes how to install your dfl 1000 npg in nat route mode if you want to install the dfl 1000 npg in transparent mode see transparent mode installation this chapter includes 22
Use advanced dfl 1000 nat route mode settings to gather the information that you need to customize advanced dfl 1000 nat route mode settings 22
Use nat route mode settings to gather the information that you need to customize nat route mode settings 22
Using the command line interface 22
Using the setup wizard 22
Confirm your configuration settings and then select finish and close 23
Dmz interface 23
From the web based manager you can use the setup wizard to create the initial configuration of your dfl 1000 npg to connect to the web based manager see connecting to the web based manager 23
If you changed the ip address of the internal interface using the setup wizard you must reconnect to the web based manager using a new ip address browse to https followed by the new ip address of the internal interface otherwise you can reconnect to the web based manager by browsing to https 192 68 9 you have now completed the initial configuration of your dfl 1000 npg and you can proceed to connect the dfl 1000 npg to your network using the information in connecting to your networks 23
Reconnecting to the web based manager 23
Select easy setup wizard the middle button in upper right corner of the web based manager 23
Starting the setup wizard 23
Use dmz interface optional to record the ip address and netmask of the dfl 1000 dmz interface if you are configuring it during installation 23
Use the information that you gathered in nat route mode settings to fill in the wizard fields select the next button to step through the wizard pages 23
Using the setup wizard 23
Configuring nat route mode ip addresses 24
Configuring the dfl 1000 npg to run in nat route mode 24
Using the command line interface 24
Configuring your networks 25
Connecting to your networks 25
Completing the configuration 26
Configuring the dmz interface 26
Setting the date and time 26
Changing to transparent mode 27
Preparing to configure transparent mode 27
Transparent mode installation 27
Using the setup wizard 27
Changing to transparent mode 28
Configuring the transparent mode management ip address 28
Reconnecting to the web based manager 28
Starting the setup wizard 28
Using the command line interface 28
Configure the transparent mode default gateway 29
Connecting to your networks 29
Setting the date and time 29
Firewall configuration 31
Adding nat route mode policies 32
Changing to nat route mode 32
Changing to transparent mode 32
Nat route mode 32
Nat route mode and transparent mode 32
Transparent mode 32
Configure the policy 33
On a policy in the list to add the new policy above a specific policy 33
You can also select insert policy before 33
Arrange policies in the policy list so that they have the results that you expect arranging policies in a policy list is described in configuring policy lists 34
Select ok to add the policy 34
Add transparent mode policies to control the network traffic that is allowed to pass through the dfl 1000 npg when you are running the firewall in transparent mode 35
Adding transparent mode policies 35
Configure the policy 35
On a policy in the list to add the new policy above a specific policy 35
Policy 35
Select a policy list tab 35
Select new to add a new policy you can also select insert policy before 35
Arrange policies in the policy list so that they have the results that you expect arranging policies in a policy list is described in configuring policy lists 36
Select ok to add the policy the policy is added to the policy list 36
Configuring policy lists 37
Policy matching in detail 37
Addresses 38
Changing the order of policies in a policy list 38
Disabling a policy 38
Enabling a policy 38
Enabling and disabling policies 38
Adding addresses 39
Deleting addresses 40
Editing addresses 40
Organizing addresses into address groups 40
Grouping services 41
Predefined services 41
Providing access to custom services 41
Services 41
The dfl 1000 predefined firewall services are listed in dfl 1000 predefined services you can add these services to any policy 41
Use services to control the types of communication accepted or denied by the firewall you can add any of the predefined services to a policy you can also create your own custom services and add services to service groups this section describes 41
Add a custom service if you need to create a policy for a service that is not in the predefined service list 43
Custom 43
Enter a group name to identify the group this name appears in the service list when you add a policy and cannot be the same as a predefined service name the name can contain numbers 0 9 uppercase and lowercase letters a z a z and the special characters and _ other special characters and spaces are not allowed 43
Enter a name for the service this name appears in the service list used when you add a policy the name can contain numbers 0 9 uppercase and lowercase letters a z a z and the special characters and _ other special characters and spaces are not allowed 43
Grouping services 43
If the service has more than one port range select add to specify additional protocols and port ranges if you mistakenly add too many port range rows select delete 43
Providing access to custom services 43
Select new 43
Select ok to add the custom service you can now add this custom service to a policy 43
Select the protocol either tcp or udp used by the service 43
Specify a source and destination port number range for the service by entering the low and high port numbers if the service uses one port number enter this number in both the low and high fields 43
To make it easier to add policies you can create groups of services and then add one policy to provide access to or block access for all the services in the group a service group can contain predefined services and custom services in any combination you cannot add service groups to another service group 43
To remove each extra row 43
Creating one time schedules 44
Schedules 44
Creating recurring schedules 45
Adding a schedule to a policy 46
Adding static nat virtual ips 47
Adding static nat virtual ipssee adding policies with virtual ips 47
Adding static nat virtual ipssee adding port forwarding virtual ips 47
Adding static nat virtual ipssee adding static nat virtual ips 47
Dmz firewall policy and set destination to the virtual ip you can create two types of virtual ips 47
This section describes 47
Virtual ip 47
Virtual ips 47
Adding port forwarding virtual ips 49
Adding policies with virtual ips 50
Ip pools 51
Configuring ip mac binding for packets going through the firewall 52
Ip mac binding 52
Adding ip mac addresses 53
Configuring ip mac binding for packets going to the firewall 53
Viewing the dynamic ip mac list 53
Enabling ip mac binding 54
Example policies 55
Nat policy for public access to a server 55
Routing policy for access to a server from the internal network 55
Transparent mode policy for public access to a server 56
Denying connections from the internet 57
Denying connections to the internet 57
Using a schedule to deny access 57
Adding policies that accept connections 58
Requiring authentication to connect to the internet 59
Adding user names and configuring authentication 61
Setting authentication timeout 61
Users and authentication 61
Adding user names and configuring authentication 62
Deleting user names from the internal database 62
Adding radius servers 63
Configuring radius support 63
Deleting radius servers 63
Adding user groups 64
Configuring user groups 64
Deleting user groups 65
Ipsec vpns 66
Configuring autoike key ipsec vpn 67
Interoperability with ipsec vpn products 67
Configuring dialup vpn 68
Configuring manual key ipsec vpn 68
Configuring a vpn concentrator for hub and spoke vpn 69
Configuring the vpn concentrator 69
Add a remote gateway if you are adding autoike key tunnels see adding a remote gateway 70
Add additional encrypt policies between the member vpns use the following configuration 70
Add an autoike key vpn tunnel and include the remote gateway added in step 1 see adding an autoike key vpn tunnel or add a manual key vpn tunnel see adding a manual key vpn tunnel 70
Add one encrypt policy between the member vpn and the vpn concentrator use the following configuration 70
Configuring the member vpns 70
For each member vpn you must create a vpn tunnel to the vpn concentrator network this tunnel can be an autoike key or manual key tunnel you must create an encrypt policy that allows inbound and outbound vpn connections between the member vpn and the concentrator you must create additional encrypt policies that allow inbound and outbound vpn connections between each of the member vpns the policy between the member vpn and the concentrator must be arranged in the policy list above the policies between member vpns each encrypt policy must include the same tunnel name to configure each member vpn 70
See adding an encrypt policy 70
Adding a remote gateway 71
Configuring ipsec redundancy 71
Select ok to save the remote gateway 72
About dialup vpn authentication 73
A username and password in the user group added to the dialup server remote gateway in this configuration the clients pre shared key must be formatted with a between the user name and password username password 74
Aggressive mode with no user group 74
In this configuration the server and the clients use aggressive mode for key exchange a user group has not been selected in the server dialup remote gateway clients authenticate with the server using their authentication keys 74
In this configuration the server and the clients use main mode for key exchange a user group has been selected in the server dialup remote gateway clients authenticate with the server using their authentication keys the client authentication key can be one of the following 74
In this configuration the server and the clients use main mode for key exchange a user group has not been added to the server dialup remote gateway clients authenticate with the server using their authentication keys 74
Main mode with a user group selected 74
Main mode with no user group selected 74
The same as the server authentication key 74
About dh groups 75
About nat traversal 75
About the p1 proposal 75
Aggressive mode with a user group selected 75
Autoike key ipsec vpns use a two phase process for creating a vpn tunnel during the first phase p1 the vpn gateways at each end of the tunnel negotiate to select a common algorithm for encryption and another one for authentication when you configure the remote gateway p1 proposal you are selecting the algorithms that the dfl 1000 npg proposes during phase 1 negotiation you can select up to three different encryption and authentication algorithm combinations choosing more combinations might make it easier for p1 negotiation but you can restrict the choice to one if required for negotiation to be successful both ends of the vpn tunnel must have at least one encryption algorithm and one authentication algorithm in common 75
In this configuration the server and the clients use aggressive mode for key exchange a user group is selected in the server dialup remote gateway the format of the authentication key depends on the information in the local id field 75
Nat network address translation converts private ip addresses into routable public ip addresses the dfl 1000 npg uses napt network address port translation in which both ip addresses and ports are mapped mapping both components allows multiple private ip addresses to use a single public ip address because a nat device modifies the original ip address of an ipsec packet the packet fails an integrity check this failure means that ipsec vpn does not work with nat devices nat traversal solves this problem by encapsulating the ipsec packet within a udp packet encapsulating the ipsec packet allows nat to process the packet without changing the original ipsec packet 75
Select 3des to propose to encrypt packets using triple des encryption 75
Select des to propose to encrypt packets using des encryption 75
Select md5 to propose to use md5 authentication 75
Select sha1 to propose to use sha1 authentication 75
The diffie hellman dh algorithm creates a shared secret key that can be created at both ends of the vpn tunnel without communicating the key across the internet you can select from dh group 1 2 and 5 dh group 5 produces the most secure shared secret key and dh group 1 produces the least secure key however dh group 1 is faster that dh group 5 75
Add an autoike key tunnel to specify the parameters used to create and maintain a vpn tunnel that has been started by a remote gateway configuration to add an autoike key vpn tunnel 76
Adding an autoike key vpn tunnel 76
Autoike key 76
Configure the autoike key vpn tunnel 76
Select new to add a new autoike key vpn tunnel 76
Select ok to save the autoike key vpn tunnel 76
About perfect forward secrecy pfs 77
About replay detection 77
About the p2 proposal 77
Adding a manual key vpn tunnel 78
Configure a manual key tunnel to create an ipsec vpn tunnel between the dfl 1000 npg and a remote ipsec vpn client or gateway that is also using manual key a manual key vpn tunnel consists of a name for the tunnel the ip address of the vpn gateway or client at the opposite end of the tunnel and the encryption algorithm to use for the tunnel depending on the encryption algorithm you must also specify the encryption keys and optionally the authentication keys used by the tunnel because the keys are created when you configure the tunnel no negotiation is required for the vpn tunnel to start however the vpn gateway or client that connects to this tunnel must use the same encryption algorithm and must have the same encryption and authentication keys to create a manual key vpn tunnel 78
Configure the vpn tunnel 78
If you do not enable pfs the vpn tunnel creates all phase 2 keys from a key created during phase 1 this method of creating keys is less processor intensive but also less secure if an unauthorized party gains access to the key created during phase 1 all the phase 2 encryption keys can be compromised 78
Manual key 78
Select new to add a new manual key vpn tunnel 78
Select ok to save the manual key vpn tunnel 78
Adding a vpn concentrator 79
Adding an encrypt policy 80
Viewing vpn tunnel status 82
Testing a vpn 83
Viewing dialup vpn connection status 83
Autoike key vpn between two networks 84
Ipsec vpn configuration examples 84
Configuring the remote gateway for a remote network 85
Use the following procedure to configure the remote gateway for the example vpn in example vpn between two internal networks example remote gateway configuration shows the information required to configure the remote gateway 85
Autoike key 86
Configuring the autoike key tunnel for a remote network 86
On the branch office dfl 1000 configure the autoike key tunnel using the branch office information in example autoike key tunnel configuration 86
On the branch office dfl 1000 npg configure the remote gateway using the branch office information in example remote gateway configuration 86
On the main office dfl 1000 configure the autoike key tunnel using the main office information in example autoike key tunnel configuration 86
On the main office dfl 1000 npg configure the remote gateway using the main office information in example remote gateway configuration 86
Remote gateway 86
Select new to add a remote gateway 86
Select new to add an autoike key tunnel 86
Select ok to save the autoike key tunnel 86
Select ok to save the remote gateway 86
To configure the autoike key tunnel for the main office and branch office vpn gateways 86
To configure the remote gateways for the main office and branch office 86
Use the following procedure to configure the autoike key tunnel for the example vpn in example vpn between two internal networks example autoike key tunnel configuration shows the information required to configure the tunnel 86
Adding an encrypt policy for a network to network vpn 87
Adding source and destination addresses for a network to network vpn 87
Internal 87
On the branch office dfl 1000 npg enter the address name ip address and netmask using the branch office source address information in ipsec vpn source and destination addresses 87
On the main office dfl 1000 npg enter the address name ip address and netmask using the main office source address information in ipsec vpn source and destination addresses 87
Repeat these steps this time selecting the external address list to add the main office and branch office destination addresses 87
Select new to add an address 87
Select ok to save the source address 87
To add the main office and branch office source addresses 87
Use the following procedure to add an encrypt policy that allows ipsec vpn traffic through the firewall the encrypt policy associates the tunnel with the source and destination address example encrypt policies show main office and branch office encrypt policies for the vpn in example vpn between two internal networks 87
Use the following procedures to add the network addresses to the autoike key tunnel shown in example vpn between two internal networks you must add a source and a destination address to both gateways ipsec vpn source and destination addresses shows the information required to add the source and destination addresses to the autoike key tunnel 87
Autoike key vpn for remote clients 88
Adding an encrypt policy for a remote client 89
Adding source and destination addresses for a remote client vpn 89
Configure the remote gateway using the information in example remote gateway configuration 89
Configuring the autoike key tunnel for a remote client 89
Configuring the ipsec vpn client 89
Configuring the remote gateway for remote clients 89
Example autoike key tunnel configuration shows the information required to configure the autoike key tunnel for the example vpn in example vpn between a main office internal network and a remote client 89
Example remote gateway configuration shows the information required to configure the remote gateway for the example vpn in example vpn between a main office internal network and a remote client 89
Remote gateway 89
Select new to add a remote gateway 89
Select ok to save the remote gateway 89
To configure the remote gateway 89
Adding a source address for the internal network 90
Adding source and destination addresses for a remote client vpn 90
Autoike key 90
Configure the tunnel using the information in example autoike key tunnel configuration 90
Enter the address name ip address and netmask using the source address information in example source and destination addresses for a client with a static ip address 90
Internal 90
Repeat these steps this time selecting the external address list to add destination address 90
Select new to add an address 90
Select new to add an autoike key tunnel 90
Select ok to save the autoike key tunnel 90
Select ok to save the source address 90
To configure the vpn tunnel 90
Use the following procedures to add the example source and destination addresses 90
Use the following procedures to add the network and client addresses to the autoike key tunnel the source address is the ip address of the network behind the local vpn gateway and the destination address is the ip address of the remote vpn client 90
Adding an encrypt policy for a remote client 91
Configuring the ipsec vpn client 91
Dialup vpn 92
Adding a dialup remote gateway 93
Adding autoike key tunnels for dialup vpn 93
Adding source and destination addresses for dialup vpn 93
Adding encrypt policies for dialup vpn 94
Configuring remote ipsec vpn clients for dialup vpn 94
Configuring remote ipsec vpn gateways for dialup vpn 94
Manual key vpn between two networks 94
Adding an encrypt policy 95
Adding source and destination addresses 95
Configure the manual key tunnel using the main office information in example manual key tunnel configuration 95
Configuring the manual key vpn tunnel 95
Example manual key tunnel configuration shows the information required to configure the manual key tunnel for the vpn in example vpn between two internal networks 95
Manual key 95
Repeat steps select new to add a manual key tunnel to select ok to save the manual key tunnel on the appropriate dfl 1000 npg using the branch office information in example manual key tunnel configuration 95
Select new to add a manual key tunnel 95
Select ok to save the manual key tunnel 95
To configure the manual key tunnel on both vpn gateways 95
Use the procedure adding an encrypt policy for a network to network vpn 95
Use the procedure adding source and destination addresses for a network to network vpn 95
Adding an encrypt policy 96
Adding internal and external addresses 96
Configure the manual key tunnel using the dfl 1000 vpn gateway information in example dfl 1000 vpn gateway and client manual key tunnels 96
Configuring the ipsec vpn client 96
Configuring the manual key tunnel 96
Example dfl 1000 vpn gateway and client manual key tunnels shows the information required to configure the manual key tunnel for the example vpn in example vpn between a main office internal network and a remote client 96
In this example you configure a manual key vpn between an internal network and a remote vpn client example vpn between a main office internal network and a remote client shows this configuration use the following procedures to configure the manual key vpn 96
Manual key 96
Manual key vpn for remote clients 96
Select new to add a manual key tunnel 96
To configure the manual key tunnel on the dfl 1000 vpn gateway 96
Adding an encrypt policy 97
Adding internal and external addresses 97
Configuring the ipsec vpn client 97
Hub and spoke vpn vpn concentrator 97
Configuring the hub 98
Configuring the spokes 98
Adding encrypt policies 99
Adding source and destination addresses 99
Configure a separate autoike key tunnel for the hub and for each spoke these tunnels will use the remote gateways that you created in the procedure configuring the remote gateways use the procedure configuring the autoike key tunnel for a remote client use the information in example autoike key tunnel configuration to configure the autoike key tunnels 99
Configuring the autoike key tunnels 99
Configuring the remote gateways 99
Use the following procedures to create branch 1 and branch 2 99
Use the procedure configuring the remote gateway for remote clients use the information in example remote gateway configuration to configure remote gateways for the main office branch 1 and branch 2 99
Add source and destination addresses for the main office branch 1 and branch 2 use the procedure adding source and destination addresses for a remote client vpn use the information in example ipsec source and destination address information to add the source and destination addresses you need to add the addresses for each location individually 100
Adding source and destination addresses 100
Concentrator 100
Configuring the vpn concentrator 100
Enter the name of the new vpn concentrator in the concentrator name field 100
For the main office the hub create the vpn concentrator and add the appropriate members to it add all the tunnels that are part of the same hub and spoke configuration to the same vpn concentrator if you add a spoke to the configuration after you create the vpn concentrator you can add the new vpn tunnel to the vpn concentrator by selecting the concentrator name while you are configuring the tunnel example vpn concentrator configuration shows the information required to configure the vpn concentrator 100
Select branch1_vpn in the available tunnels list and select the right arrow the tunnel moves to the members list 100
Select branch2_vpn in the available tunnels list and select the right arrow the tunnel moves to the members list 100
Select new to add a vpn concentrator 100
Select ok to add the vpn concentrator 100
To add a vpn concentrator 100
Adding encrypt policies 101
Use the information in tables below to add the encrypt policies use the procedure adding an encrypt policy for a remote client the main office requires one policy to each branch office each branch office requires two policies on the same tunnel at the branch offices the policy for the hub must be arranged in the policy list above the policies for the spokes 101
Pptp and l2tp vpns 103
Pptp vpn configuration 103
Configuring the dfl 1000 npg as a pptp gateway 104
Configuring a windows 98 client for pptp 105
Installing pptp support 105
Configuring a pptp dialup connection 106
Configuring a windows 2000 client for pptp 106
Connecting to the pptp vpn 106
Configuring a pptp dialup connection 107
Configuring a windows xp client for pptp 107
Configuring the vpn connection 107
Connecting to the pptp vpn 107
Connecting to the pptp vpn 108
L2tp vpn configuration 108
Configuring the dfl 1000 npg as an l2tp gateway 109
Configuring a windows 2000 client for l2tp 110
Configuring an l2tp dialup connection 110
Disabling ipsec 110
Configuring a windows xp client for l2tp 111
Configuring an l2tp vpn dialup connection 111
Configuring the vpn connection 111
Connecting to the l2tp vpn 111
Connecting to the l2tp vpn 112
Disabling ipsec 112
Blocking web pages that contain unwanted content 113
Enabling web content filtering 113
Web content filtering 113
Adding words and phrases to the banned word list 114
Changing the content block message 114
Enabling the banned word list 114
Backing up the banned word list 115
Clearing the banned word list 115
Temporarily disabling individual words in the banned word list 115
Temporarily disabling the banned word list 115
Blocking access to urls 116
Changing the url block message 116
Enabling the url block list 116
Restoring the banned word list 116
Adding urls to the url block list 117
Clearing the url block list 118
Downloading the url block list 118
Temporarily disabling individual url blocking 118
Temporarily disabling the url block list 118
Uploading a url block list 118
Exempting urls from content or url blocking 119
Removing scripts from web pages 119
Adding urls to the exempt url list 120
Clearing the exempt url list 121
Downloading the exempt url list 121
Temporarily disabling entries in the exempt url list 121
Uploading an exempt url list 121
Configuring logging 123
Logging and reporting 123
Recording logs on a netiq webtrends server 123
Recording logs on a remote computer 123
Recording logs on the dfl 1000 hard disk 124
Logging event log to memory 125
Selecting what to log 125
Searching event log 126
Viewing event log 126
Viewing event log saved to memory 126
Clearing event log messages 127
Viewing and maintaining logs saved to the hard disk 127
Viewing logs 127
Downloading a log file to the management computer 128
Searching logs 128
Configuring alert email 129
Deleting a saved log file 129
Deleting all messages in an active log 129
Enabling alert emails 130
Log message formats 130
Testing alert emails 130
Traffic log message format 130
Content filtering messages 131
Event log message format 131
Management messages 131
Traffic log example messages 131
Vpn tunnel monitor messages 131
Administration 132
System status 132
Upgrading the dfl 1000 firmware 133
Upgrading the firmware 133
Upgrading the firmware from a tftp server using the cli 133
Upgrading the firmware using the web based manager 133
Backing up system settings 135
Displaying the dfl 1000 npg serial number 135
Restoring system settings 135
Restoring system settings to factory defaults 135
Changing to nat route mode 136
Changing to transparent mode 136
Restarting the dfl 1000 npg 136
Shutting down the dfl 1000 npg 136
System status monitor 137
Configuring the internal interface 138
Network configuration 138
Configuring the external interface 139
Configuring the external interface with a static ip address 139
Configuring the external interface for dhcp 140
Configuring the external interface for pppoe 140
Changing the external interface mtu size to improve network performance 141
Controlling management access to the external interface 141
Configuring the dmz interface 142
Configuring the management interface transparent mode 142
Adding routing gateways 143
Configuring routing 143
Setting dns server addresses 143
Adding a default route 144
Adding routes to the routing table 145
Configuring the routing table 145
Adding routes transparent mode 146
Configuring the dfl 1000 npg for multiple internet connections 146
Enabling rip server support 146
Example configuration 147
For example your main connection to the internet could be a t1 or broadband connection to the external interface to make sure that problems with this internet connection do not affect your access to the internet you could add a second t1 or broadband connection perhaps with a different isp you can connect this second internet connection to the dmz interface you can then configure routing so that incoming and outgoing traffic is automatically routed to the wan connection that is running you can also configure routing to balance the traffic between both connections if both are running 147
This example configuration consists of a t1 wan connection to the external interface and a broadband wan connection to the dmz interface the wan networks have the following ip addresses 147
Adding a route for redundancy 148
Adding routes for load balancing 148
Configuring routing for multiple internet connections 148
Providing dhcp services to your internal network 148
Viewing the dynamic ip list 149
Setting system date and time 150
System configuration 150
Changing web based manager options 151
Adding and editing administrator accounts 152
Adding new administrator accounts 152
Editing administrator accounts 152
Configuring snmp 153
Configuring the dfl 1000 npg for snmp connections 153
Dfl 1000 mibs 154
Select apply 154
The dfl 1000 agent supports the standard internet mib ii system group rfc 1213 for reporting basic system information the agent also supports a dfl 1000 mib that reports firewall and vpn information example dfl 1000 mib fields shows the system and dfl 1000 mib fields you must compile the following mibs in your snmp manager to communicate with the dfl 1000 agent 154
Dfl 1000 traps 155
The dfl 1000 agent can send traps to up to three snmp trap receivers on your network that are configured to receive traps from the dfl 1000 npg the dfl 1000 agent sends traps in response to the events listed in snmp traps 155
You can download copies of these mib files from d link 155
Glossary 156
Firewall policies 159
General administration 159
Network configuration 159
Troubleshooting faqs 159
Schedules 160
Web content filtering 160
Logging 161
Dfl 1000 user manual 162 162
Offices 162
Technical support 162
Dfl 1000 user manual 163 163
Registration card 163
Limited warranty 165
Register the d link dfl 500 office firewall online at http www dlink com sales reg 168
Registration 168

D-Link DFL-1000 [139/168] Configuring the external interface

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