SSH会话删除/冻结/忽略keepalive

编程问答 2022-06-11

问题描述

ssh -vvv的输出是什么意思？

debug1: client_input_channel_req: channel 0 rtype [email protected] reply 1

大约1分钟后，我与服务器的会话被丢弃。这仅在一台特定服务器上发生，ssh -vvv输出的唯一区别是（上图）该行出现在输出中，而在所有其他功能正常的ssh会话中却不发生，该会话不会超时/断开连接。

我的客户端配置：

cat /etc/ssh/ssh_config

Include /etc/ssh/ssh_config.d/*.conf

Host *
    ServerAliveInterval 1
    ServerAliveCountMax 1440
#   ForwardAgent no
#   ForwardX11 no
#   ForwardX11Trusted yes
#   PasswordAuthentication yes
#   HostbasedAuthentication no
#   GSSAPIAuthentication no
#   GSSAPIDelegateCredentials no
#   GSSAPIKeyExchange no
#   GSSAPITrustDNS no
#   BatchMode no
#   CheckHostIP yes
#   AddressFamily any
#   ConnectTimeout 0
#   StrictHostKeyChecking ask
#   IdentityFile ~/.ssh/id_rsa
#   IdentityFile ~/.ssh/id_dsa
#   IdentityFile ~/.ssh/id_ecdsa
#   IdentityFile ~/.ssh/id_ed25519
#   Port 22
#   Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc
#   MACs hmac-md5,hmac-sha1,[email protected]
#   EscapeChar ~
#   Tunnel no
#   TunnelDevice any:any
#   PermitLocalCommand no
#   VisualHostKey no
#   ProxyCommand ssh -q -W %h:%p gateway.example.com
#   RekeyLimit 1G 1h
    SendEnv LANG LC_*
    HashKNownHosts yes
    GSSAPIAuthentication yes

我的服务器端配置：

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

# 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

X11Forwarding yes
PrintMotd no
TCPKeepAlive yes
ClientAliveInterval 1
ClientAliveCountMax 10000

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

# override default of no subsystems
Subsystem   sftp    /usr/lib/openssh/sftp-server

重要的是，它们包含服务器/客户端的AliveInterval和AliveCount行。

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）

opensshsshssh