Linux ssh优化脚本（解决连接慢的问题）

发表于 2024-12-2 更新于 2024-12- 2

作者 jepwei

2~2 分钟 阅读

#!/bin/bash

# 定义配置文件路径
SSHD_CONFIG="/etc/ssh/sshd_config"

# 确保脚本以root权限运行
if [[ $EUID -ne 0 ]]; then
   echo "This script must be run as root" 
   exit 1
fi

# 添加或修改UseDNS配置
if grep -q "^#*UseDNS" $SSHD_CONFIG; then
    sed -i 's/^#*UseDNS.*/UseDNS no/' $SSHD_CONFIG
else
    echo "UseDNS no" >> $SSHD_CONFIG
fi

# 修改GSSAPIAuthentication配置
if grep -q "^#*GSSAPIAuthentication" $SSHD_CONFIG; then
    sed -i 's/^#*GSSAPIAuthentication.*/GSSAPIAuthentication no/' $SSHD_CONFIG
else
    echo "GSSAPIAuthentication no" >> $SSHD_CONFIG
fi

# 修改GSSAPICleanupCredentials配置
if grep -q "^#*GSSAPICleanupCredentials" $SSHD_CONFIG; then
    sed -i 's/^#*GSSAPICleanupCredentials.*/GSSAPICleanupCredentials no/' $SSHD_CONFIG
else
    echo "GSSAPICleanupCredentials no" >> $SSHD_CONFIG
fi

# 重新启动sshd服务以应用更改
systemctl restart sshd

echo "Configuration updated and sshd service restarted."

Linux

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