我的SSH隧道被中断是因为主机睡着了。窃听器还是特征？

Question

我的侏儒-力量偏好是设置为自动睡眠后，30分钟的不活动。显然，它认为ssh连接不是保持它存活的一个有效理由。这是一个特性还是一个bug？我想保持我的自动挂起设置，但让ssh给它一个大脂肪“不！”当隧道处于活动状态时。

我在跑纳蒂。

下面是我的/etc/ssh/sshd_config文件：

# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::
#ListenAddress 0.0.0.0
Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
#Privilege Separation is turned on for security
UsePrivilegeSeparation yes

# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 768

# Logging
SyslogFacility AUTH
LogLevel INFO

# Authentication:
LoginGraceTime 120
PermitRootLogin yes
StrictModes yes

RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile  %h/.ssh/authorized_keys

# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2
HostbasedAuthentication no
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes

# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords no

# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no

# Change to no to disable tunnelled clear text passwords
PasswordAuthentication no

# Kerberos options
#KerberosAuthentication no
#KerberosGetAFSToken no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes

X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
#UseLogin no

#MaxStartups 10:30:60
#Banner /etc/issue.net

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

Subsystem sftp /usr/lib/openssh/sftp-server

# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication.  Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM yes

Answer 1

我自己也没有测试过--但谷歌透露了这个可能的答案(来自“如何对极客”的文章)

您可以将ssh客户端配置为每隔几秒钟自动发送协议无操作代码，这样服务器就不会断开连接。在其他客户端，这种设置有时被称为“保持活动”或“停止断开”。

全局配置

将以下行添加到/etc/ssh/ssh_config文件中：

ServerAliveInterval 60

这个数字是服务器发送无操作代码之前的秒数.

当前用户配置

将以下行添加到~/..ssh/config文件(如果不存在则创建)

Host *
  ServerAliveInterval 60

确保用空格缩进第二行。

每主机配置

如果只想使单个服务器保持活动状态，可以使用以下语法将其添加到~/..ssh/config文件中：

Host *hostname.com
   ServerAliveInterval 60