red-hat下sshd的问题

happyggg2000

电脑开sshd服务,自己使用f_secure ssh client登陆

问题一:SSH client很长时间不用的话.ssh client输入命令象死掉一样.要多好几秒钟才反应,
想问具体原理是什么,为什么会这样

问题二:我查看系统SSHD进程,为什么会有那么多的SSHD进程,麻烦高手解释一下
以下命令获取我从ssh client上取的
[root@localhost root]# ps -e|grep ss
1075 ?        00:00:00 sshd
12649 ?        00:00:00 sshd
13951 ?        00:00:00 sshd
[root@localhost root]# kill 1075
[root@localhost root]# kill 12649
[root@localhost root]# ls
anaconda-ks.cfg  install.log.syslog  lrzsz-0.12.20.tar.gz  rulerecv
flux             lfs.ext2            minicom.log           timeRule
install.log      lrzsz-0.12.20       proc.5.gz
[root@localhost root]#
[root@localhost root]#

happyggg2000

另外在帖一个日志信息
Feb  4 14:05:25 localhost webmin[1545]: Successful login as admin from 192.168.0
.3
Feb  4 14:06:23 localhost webmin[1621]: Webmin starting
Feb  4 14:06:37 localhost webmin[1628]: Logout by admin from 192.168.0.3
Feb  4 14:06:51 localhost webmin[1639]: Successful login as admin from 192.168.0
.3
Feb  4 14:15:02 localhost sshd[2078]: Accepted password for root from 192.168.0.
3 port 2318 ssh2
Feb  4 15:57:23 localhost sshd[12247]: Accepted password for root from 192.168.0
.3 port 3246 ssh2
Feb  4 15:57:39 localhost webmin[12294]: Successful login as admin from 192.168.
0.3
Feb  4 16:07:55 localhost sshd[12649]: Accepted password for root from 192.168.0
.3 port 3300 ssh2
Feb  4 16:49:53 localhost sshd[13951]: Accepted password for root from 192.168.0
.3 port 3469 ssh2
Feb  4 16:50:18 localhost sshd[1075]: Received signal 15; terminating.
[root@localhost log]#
[root@localhost log]#

happyggg2000

sshd设定相关

cat sshd.conf
###########################################################################
# $Id: sshd.conf,v 1.12 2002/10/12 02:08:09 kirk Exp $
###########################################################################

# You can put comments anywhere you want to.  They are effective for the
# rest of the line.

# this is in the format of <name> = <value>.  Whitespace at the beginning
# and end of the lines is removed.  Whitespace before and after the = sign
# is removed.  Everything is case *insensitive*.

# Yes = True  = On  = 1
# No  = False = Off = 0

Title = "SSHD"

# Which logfile group...
LogFile = secure
LogFile = messages

# Only give lines pertaining to the sshd service...
*OnlyService = sshd
*RemoveHeaders

########################################################
# This was written and is maintained by:
#    Kirk Bauer <kirk@kaybee.org>
#
# Please send all comments, suggestions, bug reports,
#    etc, to kirk@kaybee.org.
########################################################

[root@localhost services]#

ahsiao

请确认不是几个用户分别从不同的终端SSHD到服务器的。
先退出所有sshd进程，ps ax|grep sshd察看结果。然后只一个用户从终端登陆，看看会不会出现几个SSH进程。

modemTNT

原帖由 happyggg2000 于 2008-2-4 16:56 发表
电脑开sshd服务,自己使用f_secure ssh client登陆

问题一:SSH client很长时间不用的话.ssh client输入命令象死掉一样.要多好几秒钟才反应,
想问具体原理是什么,为什么会这样

问题二:我查看系统SSHD进程, ...

telnet.ssh 短时间不活动就被踢
注释  /etc/default/login
如果是bsh，ksh和bash，看看/etc/profile里是否有如下行
TMOUT=XX
export TMOUT