10-05-2001
You did not take into account the underlying protocol overhead, including TCP/IP and the application protocol. Also, on an ethernet segment, only one sender (source, destination) may talk at a time, which adds further overhead to the protocol overhead.
Plus, you did not take into account bus, OS and filesystem readwrite latency on both ends. The list goes on and on. It not possible to do a simple math calculation to determine the transfer rate of the actual data.
If you have a superfast system where the bus, IO, disk latency were insignificant, you would still have significant TCP/IP overhead.
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uucpd(1M) uucpd(1M)
NAME
uucpd - UUCP over TCP/IP server daemon
SYNOPSIS
DESCRIPTION
is the server for supporting UUCP connections over TCP/IP networks.
is invoked by (see inetd(1M)) when a UUCP connection is established (that is, a connection to the port indicated in the "uucp" service
specification; see services(4)), and executes the following protocol:
1) The server prompts with "login:". The process at the other end must supply a username.
2) If the username refers to an account without a password, the server then prompts with "Password:". The process at the other end must
supply the password for that account.
The connection is dropped if one or more of the following conditions occurs:
o The username is not valid.
o The username is valid but refers to an account that does not have as its login shell.
o The password authentication fails due to an incorrect password to that account.
o The password authentication fails due to the settings in Refer to the security(4) manpage for detailed information on config-
urable parameters that affect the password authentication.
If the connection is successful, is run (see uucico(1M)). Entries are made in traceable with the and commands (see who(1) and last(1)).
Protocol Restriction
Only the "g" protocol for is supported.
DIAGNOSTICS
All diagnostic messages are returned on the connection, after which the connection is closed.
An error occurred while reading the username.
An error occurred while reading the password.
The username or the password is invalid or the user's login
shell for this account is not
WARNINGS
On Trusted Systems, prohibits to start if any of the following conditions are true :
o The login account is locked (several causes).
o The current time does not match existing time-of-day restrictions for this account.
Under such conditions, will return the message to the connection. The connection is then dropped.
HP-UX 11i Version 3 is the last release to support trusted systems functionality.
AUTHOR
was developed by the University of California, Berkeley and HP.
FILES
configuration file for inetd
optional security file for inetd
service name data base
login data base
security defaults configuration file
SEE ALSO
inetd(1M), uucico(1M), pam(3), updatebwdb(3C), security(4), services(4).
uucpd(1M)