HP-UX Internet Services Administrator's Guide (May 2010)

user
Indicates a client user identifier, and specifies a login name or address. The
default user name is unknown.
You can use the first tcpd syntax when a server has more than one address or name.
Example 3-1 Sample Usage of the tcpdmatch Tool
The following example denotes how tcpd handles an ftp request from a local system:
# tcpdmatch ftpd localhost
If the host name lookup fails, the same request is handled by tcpd as follows:
# tcpdmatch ftpd 127.0.0.1
To determine what tcpd does when the client name and address do not match, execute
the following command at the command prompt:
# tcpdmatch ftpd paranoid
For more information on the tcpdmatch tool, type man 1 tcpdmatch, and for more
information on wildcard patterns, type man 5 hosts_access at the HP-UX prompt.
The try-from Utility
The try-from utility identifies the detailed information regarding to a connection.
This utility must be called via a remote shell command to determine if the host name
and the address are recognized properly, and also if the user name lookup works.
The try-from utility can be executed from the command line as follows:
# remsh host /usr/bin/try-from
When the try-from utility is invoked, it prints the following output:
client address (%a):
client hostname (%n):
client username (%u):
client info (%c):
server address (%A):
server hostname (%N):
server process (%d):
server info (%s):
The client information describes how the remote host recognizes the client in terms
of an address, name, and user name, whereas, the server information describes the
remote host.
For more information on % <letter> expressions, type man 5 hosts_access at
the HP-UX prompt.
The safe_finger Program
safe_finger, a wrapper program to the finger client, protects the data sent by the
remote finger server. This program accepts all the options supported by the finger
client.
TCP Wrappers Files 43