Re: rsh and rcp, or ftp stalling
> I have scripts that do a lot of rcp and rsh or alot of ftp,
> between two debian machines on a local network. Either method invariably
> hangs after several (50-100) successful commands. For some time
> afterwards, rsh commands are no longer possible. If I do too many ftp's ,
> the same thing happens, however the ftp's and rsh don't interfere with one
> Is this some kind of security feature ?
The wait/nowait entry is applicable to datagram sockets only
(other sock- ets should have a ``nowait'' entry in this space).
If a datagram server connects to its peer, freeing the socket so
inetd can received further messages on the socket, it is said to
be a ``multi-threaded'' server, and should use the ``nowait''
entry. For datagram servers which process all incoming datagrams
on a socket and eventually time out, the server is said to be
``single-threaded'' and should use a ``wait'' entry. Com- sat(8)
(biff(1)) and talkd(8) are both examples of the latter type of
datagram server. Tftpd(8) is an exception; it is a datagram
server that establishes pseudo-connections. It must be listed as
``wait'' in order to avoid a race; the server reads the first
packet, creates a new socket, and then forks and exits to allow
inetd to check for new service requests to spawn new servers.
The optional ``max'' suffix (separated from ``wait'' or
``nowait'' by a dot) specifies the maximum number of server
instances that may be spawned from inetd within an interval of 60
sec- onds. When omitted, ``max'' defaults to 40.
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