Running '/etc/rc.d/init.d/sshd stop' only stops the original sshd process,
but not the processes spawned to handle connections.  As a result, existing
sshd connections aren't shut down.  Also, trying to restart sshd fails,
since the daemon() function of /etc/rc.d/init.d/functions sees that there
are sshd processes running and refuses to start a new one.

Annotated typescript:

	First, lets see what sshd processes are running ...

[root@eliaha aah]# ps aux | grep sshd
root       499  0.0  0.1  2460  200 ?        S    Sep30   0:03
/usr/sbin/sshd
root      8080  0.4  1.1  3076 1444 ?        S    09:56   0:00
/usr/sbin/sshd

	499 is the original sshd process started at boot-up.   8080 was spawned to 
	serve an ssh connection.  Now let's try to stop sshd ...

[root@eliaha aah]# /etc/rc.d/init.d/sshd stop
Stopping sshd:                                             [  OK  ]

	Ok, the script in init.d *thinks* it stopped sshd, BUT ...

[root@eliaha aah]# ps aux | grep sshd
root      8080  0.1  1.1  3076 1444 ?        S    09:56   0:00
/usr/sbin/sshd

	... process 8080 is still there, meaning the ssh user is still connected.  
	Now let's try and restart sshd ...

[root@eliaha aah]# /etc/rc.d/init.d/sshd start
Starting sshd:

	... uh-oh, no [ OK ].  Did it start sshd? ...

[root@eliaha aah]# ps aux | grep sshd
root      8080  0.1  1.1  3076 1444 ?        S    09:56   0:00
/usr/sbin/sshd

	No, only the old sshd user process is running.  When init.d/sshd called
daemon() 
	(from init.d/functions), daemon() noticed that there already was a process 
	named sshd and refused to start a new one.  But, since this process is 
	serving a user, there isn't any process listening for new connections.  
	This means that ...

[root@eliaha aah]# ssh aah@localhost
Secure connection to eliaha.duke.edu refused.

	ssh services are down and can't be restarted until whatever user 
	had established the ssh process 8080 decides to quit (or the sysadmin 
	manually kills 8080).

Thanks for your work.  Yours,
	Adam Haile
	adam.haile@duke.edu
---
Additional information, in case it proves useful:

[root@eliaha /root]# uname -a
Linux eliaha.duke.edu 2.2.16-22 #1 Tue Aug 22 16:49:06 EDT 2000 i686
unknown
[root@eliaha /root]# cat /etc/issue

Red Hat Linux release 7.0 (Guinness)
Kernel 2.2.16-22 on an i686

[root@eliaha /root]# rpm -q openssh
openssh-2.1.1p4-1
[root@eliaha /root]# rpm -q openssh-server
openssh-server-2.1.1p4-1
[root@eliaha /root]#