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Index: U

-u option (exportfs command): 9.1.2.3. The exportfs command (TCP/IP Network Administration)

--uninstall option (rpm): 11.1.1. Using the Red Hat Package Manager (TCP/IP Network Administration)

U flag (Linux routing table): 2.4. The Routing Table (TCP/IP Network Administration)

UCD-SNMP project (see Net-SNMP)

UCD SNMP tools: 7.2. SNMP-Based Management Tools (Network Troubleshooting Tools)

8.4. Network-Monitoring Tools (Network Troubleshooting Tools)

A.4. Sources for Tools (Network Troubleshooting Tools)

A.4. Sources for Tools (Network Troubleshooting Tools)

UCE (Unsolicited Commercial Email): 16.1.2.1. Junk mail (Building Internet Firewalls)

udp option (fstab file): 9.1.3.2. The vfstab and fstab files (TCP/IP Network Administration)

UDP response packets: 7.6.1. Common Syslog Messages (DNS and Bind)

8.3. Registering Name Servers (DNS and Bind)

12.3. Option Settings (DNS and Bind)

disabled checksums and: 14.5.5. Name Server Startup Fails Because UDP Checksums Disabled (DNS and Bind)

overflowing: 12.7.7. Unspecified Error (DNS and Bind)

UDP (Unreliable Datagram Protocol)

bandwidth: 4.2.3.3. iperf (Network Troubleshooting Tools)

filtering packets: 5.4.2.4.2. Protocol and port filtering. (Network Troubleshooting Tools)

hping tool: 9.1.1.1. hping (Network Troubleshooting Tools)

load generation: 9.1.2.1. spray (Network Troubleshooting Tools)

MGEN tool: 9.1.2.2. MGEN (Network Troubleshooting Tools)

nemesis tool: 9.1.1.2. nemesis (Network Troubleshooting Tools)

NTP usage of: 11.3. NTP (Network Troubleshooting Tools)

syslog use of: 11.2.1.2. Remote logging (Network Troubleshooting Tools)

throughput: 4.2.3.1. ttcp (Network Troubleshooting Tools)

traceroute tool: 4.1. Path Discovery with traceroute (Network Troubleshooting Tools)

UDP (User Datagram Protocol): 4.3.2. UDP (Building Internet Firewalls)

1.4. Transport layer (Managing NFS and NIS)

1.4.1. TCP and UDP (Managing NFS and NIS)

9.2.1. Local Forwarding (SSH, The Secure Shell)

1.2. A Data Communications Model (TCP/IP Network Administration)

RPC and: 14.1. Remote Procedure Call (RPC) (Building Internet Firewalls)

delivery: 1.4.1. TCP and UDP (Managing NFS and NIS)

limiting traffic: 2.2. SNMP Communities (Essential SNMP)

low overhead: 2.1. SNMP and UDP (Essential SNMP)

and NIS: 3.3.4. Integrating NIS maps with local files (Managing NFS and NIS)

Packet Relayer: B.4.3. UDP Packet Relayer (Building Internet Firewalls)

PC/NFS and: 10.1. PC/NFS today (Managing NFS and NIS)

ports 161 and 162: 2.1. SNMP and UDP (Essential SNMP)

in protocol stack: 2.1. SNMP and UDP (Essential SNMP)

RARP and: 8.3.1. Reverse ARP requests (Managing NFS and NIS)

and RPC: 1.5.1. The client-server model (Managing NFS and NIS)

SNMP and: 2.1. SNMP and UDP (Essential SNMP)

specifying for commands: C.2. Common Command-Line Arguments (Essential SNMP)

throughput, bottlenecks and: 16.4.2.2. NFS/TCP versus NFS/UDP (Managing NFS and NIS)

Transport Layer: 1.6.1. User Datagram Protocol (TCP/IP Network Administration)

traps and unreliability of: 2.1. SNMP and UDP (Essential SNMP)

2.6.6. SNMP Traps (Essential SNMP)

10.1. Understanding Traps (Essential SNMP)

12.5. Disk-Space Checker (Essential SNMP)

uid field (inet.conf file): 5.3. The Internet Daemon (TCP/IP Network Administration)

UID (user ID)

assigning to subprocesses of SSH server: 3.6. As-User Access (userfile) (SSH, The Secure Shell)

changing while logged in: 12.3.3. Unknown password entries (Managing NFS and NIS)

DBM database and: 3.3.5. Map files (Managing NFS and NIS)

exports file: 9.1.2.2. The /etc/exports file (TCP/IP Network Administration)

mapping users to: 9.1.2.2. The /etc/exports file (TCP/IP Network Administration)

share command: 9.1.2.1. The share command (TCP/IP Network Administration)

Umask: 5.4.2.2. Permissions for newly created files (SSH, The Secure Shell)

octal values: 5.4.2.2. Permissions for newly created files (SSH, The Secure Shell)

recommended setting: 10.3.2. /etc/sshd_config (SSH, The Secure Shell)

UMASK parameter, nfslogd daemon: 14.6.8. Other configuration parameters (Managing NFS and NIS)

umount( ) system call, automounter: 9. The Automounter (Managing NFS and NIS)

unauthorized changes to systems: 1.2. Need for Troubleshooting Tools (Network Troubleshooting Tools)

UNAVAIL condition: 6.4.2. Sun's Solaris 2.x (DNS and Bind)

uncompressing domain names: 15.2.6. The Name Server Library Routines (DNS and Bind)

uncompressing software tools: A.1.1. Generic Installs (Network Troubleshooting Tools)

undefine macro (sendmail): E.3. m4 sendmail Macros (TCP/IP Network Administration)

underscore (_) not permitted in host names: 4.5. Host Name Checking (BIND 4.9.4 and Later Versions) (DNS and Bind)

undocumented features: 0.7. Disclaimers (SSH, The Secure Shell)

unenforced locking: 11.1.3. Mandatory versus advisory locking (Managing NFS and NIS)

unformatted timestamps: 5.4.2.2. Controlling how information is displayed (Network Troubleshooting Tools)

5.5.1. sanitize (Network Troubleshooting Tools)

unicast addresses: 13.1. Broadcast addresses (Managing NFS and NIS)

2.2. The IP Address (TCP/IP Network Administration)

unicast multicast parameter (gated): B.8.3. The isis Statement (TCP/IP Network Administration)

unicast packets: 8.3.1.2. Web mode (Network Troubleshooting Tools)

unicasting: 19.6. Multicast and the Multicast Backbone (MBONE) (Building Internet Firewalls)

Unicenter TNG Framework: 5.2. NMS Suites (Essential SNMP)

uninterruptible power supplies (UPSs): 4.4. In the End (Essential SNMP)

7.3.7. APC Symetra (Essential SNMP)

uninterruptible power system (UPS): 8.5.2. Recommendations (DNS and Bind)

universal participation: 3.6. Universal Participation (Building Internet Firewalls)

24.1.4.6. Universal participation (Building Internet Firewalls)

24.2.4.6. Universal participation (Building Internet Firewalls)

University at Buffalo Network Management Server: 1.7. Getting More Information (Essential SNMP)

5. Network-Management Software (Essential SNMP)

Unix: 0.3. Platforms (Building Internet Firewalls)

7.3.5. Concord SystemEDGE Agent for Unix and NT (Essential SNMP)

agents: 5.1. SNMP Agents (Essential SNMP)

bastion host: 10.3.1. What Operating System? (Building Internet Firewalls)

11. Unix and Linux Bastion Hosts (Building Internet Firewalls)

BSD

configuration file: 5.1.4. The BSD Kernel Configuration File (TCP/IP Network Administration)

devices statement: 5.1.5.3. The device statement (TCP/IP Network Administration)

options statement: 5.1.5.1. The options statement (TCP/IP Network Administration)

pseudo-device statement: 5.1.5.2. The pseudo-device statement (TCP/IP Network Administration)

versions of: Brief History of the Internet (DNS and Bind) 1.1. A (Very)

checksum programs: 11.6. Running a Security Audit (Building Internet Firewalls)

configuration files, startup: 5.2. Startup Files (TCP/IP Network Administration)

domain socket, sending messages through with ndc: 7.1.1. ndc and controls (BIND 8) (DNS and Bind)

dynamically loadable modules: 5.1.1. Using Dynamically Loadable Modules (TCP/IP Network Administration)

file modification time (mtime): 10.3. DNS NOTIFY (Zone Change Notification) (DNS and Bind)

ifconfig command, overview: 6.1. The ifconfig Command (TCP/IP Network Administration)

Internet services on: 11.3.1. How Are Services Managed Under Unix? (Building Internet Firewalls)

11.3.3. Which Services Should You Leave Enabled? (Building Internet Firewalls)

disabling: 11.3.2. Disabling Services Under Unix (Building Internet Firewalls)

11.3.4. Specific Unix Services to Disable (Building Internet Firewalls)

installing and modifying: 11.4. Installing and Modifying Services (Building Internet Firewalls)

protecting with TCP Wrapper: 11.4.1. Using the TCP Wrapper Package to Protect Services (Building Internet Firewalls)

ipfilter: 8.9.2. ipfilter (Building Internet Firewalls)

compared to ipchains: 8.9.3. Comparing ipfilter and ipchains (Building Internet Firewalls)

lpr command: 3.5.2. Print Services (TCP/IP Network Administration)

machine

configuring: 11.5. Reconfiguring for Production (Building Internet Firewalls)

securing: 11.2. Securing Unix (Building Internet Firewalls)

MRTG: 13.1. Using MRTG (Essential SNMP)

Network Access Layer: 1.4. Network Access Layer (TCP/IP Network Administration)

networking software included with: 3.1. Getting BIND (DNS and Bind)

NIS maps: 9.4. Network Information Service (TCP/IP Network Administration)

NMS suites: 5.2. NMS Suites (Essential SNMP)

5.2. NMS Suites (Essential SNMP)

operating system versions: 11.1. Which Version of Unix? (Building Internet Firewalls)

passwords: 21.2. Passwords (Building Internet Firewalls)

port numbers: 2.6.2. Port Numbers (TCP/IP Network Administration)

protocol numbers: 2.6.1. Protocol Numbers (TCP/IP Network Administration)

r commands

disabling: 12.2.6. Secure Shell (TCP/IP Network Administration)

security considerations: 12.2.5. Secure the r Commands (TCP/IP Network Administration)

recommended SSH configuration: 10. A Recommended Setup (SSH, The Secure Shell)

recording logins: 12.2. Who's Logging into My Machine? (I-Am-in) (Essential SNMP)

routing tables: 2.4. The Routing Table (TCP/IP Network Administration)

serial ports, troubleshooting: 6.3.7. Troubleshooting Serial Connections (TCP/IP Network Administration)

services: 2.6.2. Port Numbers (TCP/IP Network Administration)

software, for system monitoring: 10.11.2. Consider Using Software to Automate Monitoring (Building Internet Firewalls)

supporting software: 5.5. Supporting Software (Essential SNMP)

5.5. Supporting Software (Essential SNMP)

system logs, setting up: 11.2.1. Setting Up System Logs on Unix (Building Internet Firewalls)

SystemEDGE, extensibility for: 11.2. SystemEDGE (Essential SNMP)

TCP/IP and: 1.1. TCP/IP and the Internet (TCP/IP Network Administration)

trend-analysis software: 5.4. Trend Analysis (Essential SNMP)

vendor-specific software: 5.3. Element Managers (Vendor-Specific Management) (Essential SNMP)

vmstat utility: B.1. Using External Data (Essential SNMP)

window system: 2.5.3. Network Window Systems (Building Internet Firewalls)

Unix-specific resolver configurations: 6.4. Vendor -Specific Options (DNS and Bind)

6.4.5. Compaq's Tru64 Unix and Digital Unix (DNS and Bind)

Unknown host error (ping command): 13.3. Testing Basic Connectivity (TCP/IP Network Administration)

UNKNOWN keyword (security): 12.5.1.1. tcpd access control files (TCP/IP Network Administration)

unknown query types: 7.6.2.1. BIND 4.9 and 8 statistics (DNS and Bind)

unknown transmission points: 4.2.2.2. pathchar (Network Troubleshooting Tools)

unmanaged hubs and switches: 6.5. Mapping or Diagramming (Network Troubleshooting Tools)

unpacking

software: A.1.1. Generic Installs (Network Troubleshooting Tools)

Solaris packages: A.1.2. Solaris Packages (Network Troubleshooting Tools)

unreachable devices or hosts

ARP tables and: 2.1.6. arp (Network Troubleshooting Tools)

checking with getif: 7.4.2. SNMP Tools (Network Troubleshooting Tools)

checking with tkined: 7.2.3.1. ICMP monitoring (Network Troubleshooting Tools)

ping and: 3.3.2.2. Interpreting results (Network Troubleshooting Tools)

routing troubleshooting: 10.1.5. Routing (Network Troubleshooting Tools)

traceroute and: 4.1. Path Discovery with traceroute (Network Troubleshooting Tools)

4.1. Path Discovery with traceroute (Network Troubleshooting Tools)

unreachable message: 7.6.1. Common Syslog Messages (DNS and Bind)

unreachable networks

ping and: 3.3.2.2. Interpreting results (Network Troubleshooting Tools)

traceroute and: 4.1. Path Discovery with traceroute (Network Troubleshooting Tools)

unreachable nodes: 6.1.2. The netmon Process (Essential SNMP)

6.1.2. The netmon Process (Essential SNMP)

6.1.3. Configuring Polling Intervals (Essential SNMP)

8.4. Error Responses (Essential SNMP)

Unreachable Port message: 13.5.1. Tracing Routes (TCP/IP Network Administration)

unresolved addresses in ARP tables: 2.1.6. arp (Network Troubleshooting Tools)

Unsolicited Commercial Email (UCE): 16.1.2.1. Junk mail (Building Internet Firewalls)

unspecified addresses, IPv6: 1.3.6.3. IP Version 6 unspecified address (Managing NFS and NIS)

unspecified error message: 12.7.7. Unspecified Error (DNS and Bind)

UP flag, ifconfig: 13.2.1.1. Examining interfaces (Managing NFS and NIS)

6.1.2. Checking the Interface with ifconfig (TCP/IP Network Administration)

update category: 7.5.3.1. BIND 8 categories (DNS and Bind)

update commands (nsupdate): 10.2. DNS Dynamic Update (DNS and Bind)

update (EGP trace option): B.8.5. The egp Statement (TCP/IP Network Administration)

update forwarding: 10.2. DNS Dynamic Update (DNS and Bind)

update keyword (dbmmanage command): 11.4.4.2. Improved user authentication (TCP/IP Network Administration)

UPDATE messages (BGP): 7.5.2. Border Gateway Protocol (TCP/IP Network Administration)

update-policy zone substatement: 10.2.4. TSIG-Signed Updates (DNS and Bind)

TSIG and: 11.1.4. Using TSIG (DNS and Bind)

updates, avoiding polling during: 9. Polling and Thresholds (Essential SNMP)

updates (EGP): 7.5.1. Exterior Gateway Protocol (TCP/IP Network Administration)

updates, NIS+: 2.2.3. NIS+ (Managing NFS and NIS)

updating

authorization files: 6.3.3. Updating .rhosts, hosts.equiv, etc. (DNS and Bind)

dynamically (see dynamic update)

files: 11.3.1. Tables (Essential SNMP)

graphs: 9.2.3.2. Creating a threshold (Essential SNMP)

map files: 4.2. Managing map files (Managing NFS and NIS)

ntop results: 8.3.1.2. Web mode (Network Troubleshooting Tools)

8.3.1.2. Web mode (Network Troubleshooting Tools)

password files: 4.2.4. Password file updates (Managing NFS and NIS)

root hints file: 7.2.6. Keeping the Root Hints Current (DNS and Bind)

7.2.6. Keeping the Root Hints Current (DNS and Bind)

stack fingerprint files: 6.3.2. queso (Network Troubleshooting Tools)

tabular data: 11.3.1. Tables (Essential SNMP)

zone data files: 7.2. Updating Zone Data Files (DNS and Bind)

updetach option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)

uploading programs on HTTP servers: 15.1.1.2. Running unexpected external programs (Building Internet Firewalls)

UPS (uninterruptible power system): 8.5.2. Recommendations (DNS and Bind)

UPSs (uninterruptible power supplies): 4.4. In the End (Essential SNMP)

7.3.7. APC Symetra (Essential SNMP)

URLs

APNIC registry: 3.2.4. Checking That Your Network Is Registered (DNS and Bind)

ARIN registry: 3.2.4. Checking That Your Network Is Registered (DNS and Bind)

BIND: 3.1.1. Handy Mailing Lists and Usenet Newsgroups (DNS and Bind)

FTP sites: 0.5. Obtaining the Example Programs (DNS and Bind)

global positioning: 16.6.4. Location (DNS and Bind)

HP-UX patch archive: 6.4.3. HP's HP-UX (DNS and Bind)

ICANN: 2.2.1. Top-Level Domains (DNS and Bind)

Internet Software Consortium: 1.4. The History of BIND (DNS and Bind)

IRIX patch archive: 6.4.6. Silicon Graphics' IRIX (DNS and Bind)

Modify Tool: 9.4.5. Delegating an in-addr.arpa Zone (DNS and Bind)

Net\:\:DNS module: 15.3. Perl Programming with Net::DNS (DNS and Bind)

registrars, list of: 3.2.3.3. Choosing a registrar (DNS and Bind)

RIPE registry: 3.2.4. Checking That Your Network Is Registered (DNS and Bind)

security vulnerabilities: 11.2.1. BIND Version (DNS and Bind)

us domain: 3.2.3. Back in the U.S.A. (DNS and Bind)

delegation policy of: 3.2.3.1. The us domain (DNS and Bind)

WebMagic: 3.2.2.1. Using whois (DNS and Bind)

Webmin utility: 9.5.2.2.1. Solution 1 (DNS and Bind)

whois lookup service: 3.2.2. Where in the World Do I Fit? (DNS and Bind)

3.2.2.1. Using whois (DNS and Bind)

us domain

searching name space of: 3.2.3.1. The us domain (DNS and Bind)

URL for: 3.2.3. Back in the U.S.A. (DNS and Bind)

USAGE messages: 7.6.1. Common Syslog Messages (DNS and Bind)

usage patterns: 8.1. What, When, and Where (Network Troubleshooting Tools)

usage profile: 10.11.1. Learn What the Normal Usage Profile Is (Building Internet Firewalls)

Use field (Linux routing table): 2.4. The Routing Table (TCP/IP Network Administration)

2.4. The Routing Table (TCP/IP Network Administration)

use-host-decl-names parameter (dhcpd): D.3.2. Configuration Parameters (TCP/IP Network Administration)

use-id-pool option (named): C.2.5. The options Statement (TCP/IP Network Administration)

use-lease-addr-for-default-route parameter (dhcpd): D.3.2. Configuration Parameters (TCP/IP Network Administration)

Use Nice field (sendmail): 10.5.8. Defining Mailers (TCP/IP Network Administration)

use statements in Perl: 8.1. Retrieving a Single MIB Value (Essential SNMP)

E. SNMP Support for Perl (Essential SNMP)

UseCanonicalName directive (httpd.conf file): 11.3.2. Basic Configuration Directives (TCP/IP Network Administration)

use_ct_file (sendmail): E.3.2. FEATURE (TCP/IP Network Administration)

use_cw_file (sendmail): E.3.2. FEATURE (TCP/IP Network Administration)

usehostname option (pppd command): 6.3.4. PPP Daemon Security (TCP/IP Network Administration)

A.2. The PPP Daemon (TCP/IP Network Administration)

UseLogin: 4.1.5.9. User logins and shells (SSH, The Secure Shell)

5.5.3. Selecting a Login Program (SSH, The Secure Shell)

Usenet: 1.7. Getting More Information (Essential SNMP)

13.6. Getting Help (Essential SNMP)

usenet mailer: E.3.5. MAILER (TCP/IP Network Administration)

Usenet news: 2.3.2. Usenet News (Building Internet Firewalls)

Usenet newsgroups (see newsgroups)

Usenet newsgroups for BIND: 3.1.1. Handy Mailing Lists and Usenet Newsgroups (DNS and Bind)

USENIX Association: A.6.3. USENIX Association (Building Internet Firewalls)

B.1. Sources of Information (Network Troubleshooting Tools)

conferences: A.7.1. USENIX Association Conferences (Building Internet Firewalls)

usepeerdns option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)

UsePrivilegedPort: 7.4.4.2. Forcing a nonprivileged local port (SSH, The Secure Shell)

User: 7.4.1. Remote Account Name (SSH, The Secure Shell)

user accounts, on bastion host: 10.7. Disabling User Accounts on Bastion Hosts (Building Internet Firewalls)

10.7. Disabling User Accounts on Bastion Hosts (Building Internet Firewalls)

user authentication (see authentication)

AFS (Andrew File System): 10.7.3. AFS Access Problems (SSH, The Secure Shell)

user-based authentication in SNMPv3: F.1.1. The SNMPv3 Engine (Essential SNMP)

User-based Security Model (USM): C.3.12. snmpusm (Essential SNMP)

F.1.4. SNMPv3 Textual Conventions (Essential SNMP)

USER command (POP): 3.4.2. Post Office Protocol (TCP/IP Network Administration)

User Datagram Protocol (see UDP)

1.2. A Data Communications Model (TCP/IP Network Administration)

User Datagram Protocol (UDP) (see also UDP)

9.2.1. Local Forwarding (SSH, The Secure Shell)

User directive (Apache): 11.3.3. Managing the Swarm (TCP/IP Network Administration)

/user filesystem, client server sharing: 8.2. Setting up a diskless client (Managing NFS and NIS)

user groups: B.1. Sources of Information (Network Troubleshooting Tools)

user information, Unix file permission checking: 0. Preface (Managing NFS and NIS)

user keys: 3.3. The Architecture of an SSH System (SSH, The Secure Shell)

user lists: 3.4.2.3.2. Control file details (SSH, The Secure Shell)

User Manager for Domains: 21.6.8. The User Manager (Building Internet Firewalls)

user option (pppd): A.2. The PPP Daemon (TCP/IP Network Administration)

user-oriented security: 12.1. User-oriented network security (Managing NFS and NIS)

user profiles (NNM): B.3. Profiles for Different Users (Essential SNMP)

user (sendmail K command value): E.4.5. The sendmail K Command (TCP/IP Network Administration)

user setting (smb.config file): 9.3.1. Configuring a Samba Server (TCP/IP Network Administration)

UserConfigDirectory: 5.4.1.5. User SSH directory (SSH, The Secure Shell)

7.1.3.2. Global and local files (SSH, The Secure Shell)

securing client directories: 10.7.1. NFS Security Risks (SSH, The Secure Shell)

USERCTL (Linux configuration value): 6.1.3. Assigning an Address (TCP/IP Network Administration)

UserDir directive (httpd.conf file): 11.3.4. Defining Where Things Are Stored (TCP/IP Network Administration)

UserID field, NFS log record: 14.6. NFS server logging (Managing NFS and NIS)

Userid field (sendmail): 10.5.8. Defining Mailers (TCP/IP Network Administration)

USERID option (xinetd): 12.5.2. Controlling Access with xinetd (TCP/IP Network Administration)

UserKnownHosts: 5.5.1.5. Fetching public keys of known hosts (SSH, The Secure Shell)

recommended setting: 10.3.3. /etc/ssh2/sshd2_config (SSH, The Secure Shell)

UserKnownHostsFile: 7.4.3.2. Moving the known hosts files (SSH, The Secure Shell)

usernames

and netgroups: 3.3.2. Netgroups (Managing NFS and NIS)

hostname and: 12.1.2. Enabling transparent access (Managing NFS and NIS)

netgroups: 12.1.3. Using netgroups (Managing NFS and NIS)

NFS: 1. Networking Fundamentals (Managing NFS and NIS)

users

authentication: 11.1.3. ssh (Network Troubleshooting Tools)

data collection: 1.3.2.3. Legal and ethical considerations (Network Troubleshooting Tools)

dissatisfaction: 8. Performance Measurement Tools (Network Troubleshooting Tools)

graphing number logged in (MRTG): 13.3. Graphing Other Objects (Essential SNMP)

keys, superuser: 12.5.4.7. Creating keys (Managing NFS and NIS)

managing: 2.7. Host Management Revisited (Essential SNMP)

NNM profiles: B.3. Profiles for Different Users (Essential SNMP)

passwords, updating: 4.2.4. Password file updates (Managing NFS and NIS)

privacy of: 1.3.2.3. Legal and ethical considerations (Network Troubleshooting Tools)

server response time and: 16.2. Measuring performance (Managing NFS and NIS)

SNMPv3

cloning: F.2.2.1. Using snmpusm to manage users (Essential SNMP)

creating: F.2.1. Configuring SNMPv3 for a Cisco Router (Essential SNMP)

F.2.2. Configuring SNMPv3 for Net-SNMP (Essential SNMP)

F.2.2. Configuring SNMPv3 for Net-SNMP (Essential SNMP)

default configurations: F.2.2.2. Simplifying commands by setting defaults (Essential SNMP)

engine IDs and data: F.2.2.1. Using snmpusm to manage users (Essential SNMP)

maintaining with snmpusm: F.2.2.1. Using snmpusm to manage users (Essential SNMP)

usmUser table: F.2. Configuring SNMPv3 (Essential SNMP)

trusted: 12.1.1. Trusted hosts and trusted users (Managing NFS and NIS)

user-level automounters: 9.1.2.1. User-level automounters (Managing NFS and NIS)

see also superusers: 12.5.4.7. Creating keys (Managing NFS and NIS)

users, advising of changes: 9.7. Managing the Transition to Subdomains (DNS and Bind)

9.7.1. Removing Parent Aliases (DNS and Bind)

UseRsh: compatibility (SSH, The Secure Shell) 4.1.5.12. R-commands (rsh)

7.4.5.8. RSH issues (SSH, The Secure Shell)

USM (User-based Security Model): C.3.12. snmpusm (Essential SNMP)

F.1.4. SNMPv3 Textual Conventions (Essential SNMP)

USR1 and USR2 signals: 7.1.3. Using Signals (DNS and Bind)

/usr filesystem, missing: 8.6.4. Missing /usr (Managing NFS and NIS)

/usr/hosts directory: 4.5.1. The /usr/hosts Directory (SSH, The Secure Shell)

/usr/etc/resolv.conf (see resolv.conf file)

/usr/local/bin directory, executables: 6.6.1. Solving the /usr/local puzzle (Managing NFS and NIS)

/usr/platform/ directory, client server sharing: 8.2. Setting up a diskless client (Managing NFS and NIS)

utilities (see also tools)

bindgraph: 8.1.2. Capacity Planning (DNS and Bind)

bstat: 7.6.2.1. BIND 4.9 and 8 statistics (DNS and Bind)

CPU loading: 16.5.1. CPU loading (Managing NFS and NIS)

dig: 7.2.6. Keeping the Root Hints Current (DNS and Bind)

using: 12.9. Using dig (DNS and Bind)

for firewalls: B.6. Utilities (Building Internet Firewalls)

h2n: 4.6. Tools (DNS and Bind)

7.2.5. Generating Zone Data Files from the Host Table (DNS and Bind)

host: 9.6. Good Parenting (DNS and Bind)

using: 9.6.1. Using host (DNS and Bind)

iostat: 14.2.1. I/O statistics (Managing NFS and NIS)

makedbm: 3.3.6. Map naming (Managing NFS and NIS)

Modify Tool: 9.4.5. Delegating an in-addr.arpa Zone (DNS and Bind)

named-bootconf: 4.3. Setting Up a BIND Configuration File (DNS and Bind)

named-xfer: 7.1.3. Using Signals (DNS and Bind)

14.2.1. How to Use named-xfer (DNS and Bind)

changing location of: 7.4. Changing System File Locations in BIND 8 and 9 (DNS and Bind)

NFS Server Logging utility: 14.6. NFS server logging (Managing NFS and NIS)

nfsbug: 14.4.4. nfsbug (Managing NFS and NIS)

nslookup (see nslookup utility)

nsupdate: 10.2. DNS Dynamic Update (DNS and Bind)

patchadd: 8.7.1. Dataless clients (Managing NFS and NIS)

rdist: 8.2.1. Primary Master and Slave Servers (DNS and Bind)

rpcinfo: 13.3.2. RPC registration (Managing NFS and NIS)

rsync: 8.2.1. Primary Master and Slave Servers (DNS and Bind)

Socket.pm: 13.6. Tools (DNS and Bind)

spray: 13.2.5. Gauging Ethernet interface capacity (Managing NFS and NIS)

top: 8.1.2. Capacity Planning (DNS and Bind)

Webmin: 9.5.2.2.1. Solution 1 (DNS and Bind)

ypcat, command line: 4.3.1. Removing an NIS slave server (Managing NFS and NIS)

ypinit: 3.2.2. Installing the NIS master server (Managing NFS and NIS)

yppasswd: 4.2.4. Password file updates (Managing NFS and NIS)

yppush: 4.2.1. Map distribution (Managing NFS and NIS)

ypstop: 3.2.3. Installing NIS slave servers (Managing NFS and NIS)

ypxrf: 4.2.2. Regular map transfers (Managing NFS and NIS)

utilization statistics (RMON): 8.5. RMON (Network Troubleshooting Tools)

UUCP protocol: 3.4.1. Simple Mail Transfer Protocol (TCP/IP Network Administration)

uucpdomain (sendmail database feature): E.3.2. FEATURE (TCP/IP Network Administration)

UUCPSMTP macro (sendmail): E.3. m4 sendmail Macros (TCP/IP Network Administration)

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