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Apple 034-2351_Cvr manual Setting the Log Detail Level for DHCP Service, Viewing DHCP Log Entries

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Setting the Log Detail Level for DHCP Service

You can choose the level of detail you want to log for DHCP service.

•“Low (errors only)” will indicate conditions for which you need to take immediate action (for example, if the DHCP server can’t start up). This level corresponds to bootpd reporting in “quiet” mode, with the “-q” flag.

•“Medium (errors and warnings)” can alert you to conditions in which data is inconsistent, but the DHCP server is still able to operate. This level corresponds to default bootpd reporting.

•“High (all events)” will record all activity by the DHCP service, including routine functions. This level corresponds to bootpd reporting in “verbose” mode, with the “-v” flag.

To set up the log detail level:

1In Server Admin, choose DHCP from the Computers & Services list.

2Click Settings.

3Select the Logging tab.

4Choose the logging option you want.

5Click Save.

Viewing DHCP Log Entries

If you’ve enabled logging for DHCP service, you can check the system log for DHCP errors.

To see DHCP log entries:

1In Server Admin, choose DHCP from the Computers & Services list.

2Click Log.

Viewing the DHCP Client List

The DHCP Clients window gives the following information for each client:

•The IP address served to the client.

•The number of days of lease time left, until the time is less than 24 hours; then the number of hours and minutes.

•The DHCP client ID. This is usually, but not always, the same as the hardware address.

•The computer name.

•The Ethernet ID.

To view the DHCP client list:

1In Server Admin, choose DHCP from the Computers & Services list.

2Click Clients.

Click any column heading to sort the list by different criteria.

Chapter 1 DHCP Service

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Apple 034-2351_Cvr Setting the Log Detail Level for DHCP Service, Viewing DHCP Log Entries, Viewing the DHCP Client List

Contents

For Version 10.3 or Later Mac OS X Server Network Services AdministrationApple Computer, Inc 2003 Apple Computer, Inc. All rights reserved034-2351/9-20-03 Setting Up Mac OS X Server for the First Time ContentsHow to Use This Guide Using This GuideVPN Service NAT ServiceConfiguring NAT Service Monitoring NAT ServicePreface How to Use This GuideUsing This Guide What’s Included in This GuideSetting Up Mac OS X Server for the First Time Getting Help for Everyday Management TasksGetting Additional Information Before You Set Up DHCP Service DHCP ServiceLocating the DHCP Server Using Static IP AddressesCreating Subnets Assigning IP Addresses DynamicallyAssigning Reserved IP Addresses Setting Up DHCP Service for the First TimeUsing Multiple DHCP Servers on a Network Interacting With Other DHCP ServersStep 2 Set up logs for DHCP service Managing DHCP ServiceStarting and Stopping DHCP Service Creating Subnets in DHCP ServiceTo change subnet settings Changing Subnet Settings in DHCP ServiceTo delete subnets or address ranges Deleting Subnets From DHCP ServiceSetting the DNS Server for a DHCP Subnet Changing IP Address Lease Times for a SubnetSetting LDAP Options for a Subnet Setting WINS Options for a SubnetTo set LDAP options for a subnet Viewing the DHCP Status Overview Monitoring DHCP ServiceTo disable a subnet Disabling Subnets TemporarilyViewing the DHCP Client List Setting the Log Detail Level for DHCP ServiceTo set up the log detail level Viewing DHCP Log EntriesWhere to Find More Information DNS Service DNS and BIND Before You Set Up DNS ServiceSetting Up DNS Service for the First Time Setting Up Multiple Name ServersStep 2 Learn and plan Step 4 Create a DNS Zone Step 3 Configure basic DNS settingsStep 6 Set up a mail exchange MX record optional Step 8 Start DNS serviceTo enable or disable zone transfer Managing DNS ServiceStarting and Stopping DNS Service To start or stop DNS serviceMaster To enable or disable recursionManaging Zones Adding a Master ZoneAdding a Slave Zone To add a master zoneTo add a slave zone To duplicate a zone Adding a Forward ZoneDuplicating a Zone To add a forward zoneTo modify a zone Managing RecordsModifying a Zone Deleting a ZoneTo add a record Adding a Record to a ZoneTo delete a record Modifying a Record in a ZoneDeleting a Record From a Zone To modify a recordTo view DNS service activity Viewing DNS Service StatusViewing DNS Service Activity To view DNS service statusTo change the log detail level Changing DNS Log File LocationViewing DNS Usage Statistics To change the log detail levelTo see DNS usage statistics Securing the DNS ServerDNS Spoofing Server MiningTo alter BIND’s version response DNS Service ProfilingDenial-of-ServiceDoS To specify zone transfer IP addressesService Piggybacking optionsallow-recursion 127.0.0.0/8 Setting Up MX Records Configuring DNS for Mail Service To enable MX recordsEnabling Redundant Mail Servers To enable backup or redundant mail servers Setting Up Namespace Behind a NAT RouterNetwork Load Distribution aka Round Robin Setting Up a Private TCP/IP NetworkWhat Is BIND? Configuring BIND Using the Command LineZone Data Files BIND Configuration FileBIND on Mac OS X Server Practical ExampleSetting Up Sample Configuration Files To set up the sample filesConfiguring Clients Check Your Configuration Using DNS With Dynamically Assigned IP AddressesWhere to Find More Information Request For Comment DocumentsPage IP Firewall Service Chapter 3 IP Firewall Service Subnet Mask What is a Filter?Understanding Firewall Filters IP AddressCorresponds to Netmask Chapter 3 IP Firewall ServiceNumber of addresses CIDRSample Using Address RangesRule Mechanism and Precedence Multiple IP AddressesStep 4 Add filters to the IP filter list Setting Up Firewall Service for the First TimeStep 2 Start firewall service Step 1 Learn and planStep 5 Save firewall service changes Managing Firewall ServiceStarting and Stopping Firewall Service Opening the Firewall for Standard ServicesTo open the firewall for standard services Creating an Address GroupTo create an address group To edit or delete an address group Editing or Deleting an Address GroupDuplicating an Address Group Creating an Advanced IP Filter for TCP portsTo create an IP filter for TCP ports Creating an Advanced IP Filter for UDP PortsTo create an IP filter for UDP ports To edit advanced IP filters Changing the Default FilterTo change the Default setting Editing Advanced IP FiltersTo view the log for firewall service Monitoring Firewall ServiceSetting Up Logs for Firewall Service To set up logsTo view denied packets Viewing Denied PacketsViewing Packets Logged by Filter Rules Log ExampleTo do this Block Access to Internet UsersPractical Examples Block Junk MailAllow a Customer to Access the Apple File Server To do thisTo do this Preventing Denial-of-ServiceDoS Attacks To prevent ping denial-of-serviceattacksControlling or Enabling Peer-to-PeerNetwork Usage Advanced Configuration Controlling or Enabling Network Game UsageBackground Creating IP Filter Rules Using ipfw PrecautionsRule number Reviewing IP Filter RulesCreating IP Filter Rules Chapter 3 IP Firewall ServiceDeleting IP Filter Rules Port ReferenceReference Chapter 3 IP Firewall ServiceTCP port Used forReference Chapter 3 IP Firewall ServiceTCP port Used forman ipfw For more information about ipfwWhere to Find More Information Request For Comment DocumentsNAT Service Starting and Stopping NAT ServiceTo start NAT service Viewing the NAT Status Overview Configuring NAT ServiceMonitoring NAT Service To configure NAT serviceRequest For Comment Documents To view the NAT divert logFor more information about natd Where to Find More InformationPage VPN Service Point to Point Tunneling Protocol PPTP Authentication MethodVPN and Security Transport ProtocolsEnabling and Configuring L2TP Transport Protocol Before You Set Up VPN ServiceManaging VPN Service Starting or Stopping VPN ServiceEnabling and Configuring PPTP Transport Protocol To enable L2TPTo enable PPTP Configuring VPN Network Routing Definitions To configure addition network settingsTo set routing definitions To set up the log archive interval Monitoring VPN ServiceSetting the Log Detail Level for VPN Service Setting the VPN Log Archive IntervalTo view client connections Viewing the VPN LogViewing VPN Client Connections To view the logPage How NTP Works NTP ServiceUsing NTP on Your Network Setting Up NTP ServiceTo set up NTP service Request For Comment Documents Configuring NTP on ClientsTo configure NTP on clients Where to Find More InformationPage IPv6 Support Notation IPv6 Enabled ServicesIPv6 Addresses in the Server Admin IPv6 AddressesIPv6 Reserved Addresses IPv6 Addressing ModelIPv6 Address Types Request For Comment Documents Where to Find More InformationGlossary GlossaryGlossary LDAP Lightweight Directory Access Protocol A standard client-serverprotocol for accessing a directory domain name server See DNS Domain Name System search path See search policy UCE unsolicited commercial email See spam Page Page Index IndexIndex Index