CentOS基线脚本,三级等保服务器系统安全配置脚本_centos 日志 等保三(1)
本基线脚本为自己所写,仅适用于Centos7,SUSE,TencentOS2.4系统
基线脚本主要包含以下内容
- 密码复杂度:8-32位,同时包含大小写字母,特殊字符
- 密码有效期:不超过90天
- 登录限制:密码输入错误连续5次账号临时锁定
- 连接超时:系统登录10-30分钟不活动,自动断开连接
- 分配三个用户:系统管理员,审计管理员,安全管理员
- 锁定或删除shutdown、halt帐户
- 启用安全审计功能:开启auditd,rsyslog服务
- 禁用telnet.socket服务
- 系统日志保留时间:不小于180天
自动检测/配置脚本
#! /bin/bash
#检查系统版本
function CheckSystem() {
system_version=‘’
if [[ -e /etc/os-release ]]; then
source /etc/os-release
system_version=${system_version}"PRETTY_NAME: PRETTY_NAME,"elsesystem_version=PRETTY\_NAME, "
else
system\_version=PRETTY_NAME,"elsesystem_version={system_version}“PRETTY_NAME: cat /etc/issue|head -n 1, "
fi
var=KaTeX parse error: Expected '}', got 'EOF' at end of input: …?}
echo "......{var}…”
}
#检查密码有效期
function CheckPassMaxDays() {
PASS_MAX_DAYS=cat /etc/login.defs | grep PASS\_MAX\_DAYS | grep -v ^# | awk '{print $2}'
if [ -z $PASS_MAX_DAYS ];then
sed -i ‘s/#PASS_MAX_DAYS/PASS_MAX_DAYS/’ /etc/login.defs
PASS_MAX_DAYS=cat /etc/login.defs | grep PASS\_MAX\_DAYS | grep -v ^# | awk '{print $2}'
fi
if [ -z $PASS_MAX_DAYS ];then
echo “…[N] Password Validity Period: Reset failed”
elif [ $PASS_MAX_DAYS -le 90 -a $PASS_MAX_DAYS -ge 30 ];then
echo “…[Y] Password Validity Period: PASS_MAX_DAYSdays"elsesed−i′/PASS_MAX_DAYS/s/′"PASS\_MAX\_DAYS days"
else
sed -i '/PASS\_MAX\_DAYS/s/'"PASS_MAX_DAYSdays"elsesed−i′/PASS_MAX_DAYS/s/′"{PASS_MAX_DAYS}”‘/90/g’ /etc/login.defs
PASS_MAX_DAYS=cat /etc/login.defs | grep PASS\_MAX\_DAYS | grep -v ^# | awk '{print $2}'
if [ $PASS_MAX_DAYS -le 90 -a $PASS_MAX_DAYS -ge 30 ];then
echo “…[Y] Password Validity Period: $PASS_MAX_DAYS days”
else
echo “…[N] Password Validity Period: Reset failed”
fi
fi
}
#检查日志保留时间
function CheckLogBackupTime() {
Log_Backup_Time=cat /etc/logrotate.conf |head -n 10|grep "rotate "| grep -v ^# | head -n 1|awk '{print $2}'
if [ -z $Log_Backup_Time ];then
sed -i ‘s/#rotate/rotate/’ /etc/logrotate.conf
Log_Backup_Time=cat /etc/logrotate.conf |head -n 10|grep "rotate "| grep -v ^# | head -n 1|awk '{print $2}'
fi
if [ -z $Log_Backup_Time ];then
echo “…[N] Log backup Time,Configuration does not exist”
elif [ $Log_Backup_Time -ge 26 ];then
echo “…[Y] Log backup Time: Log_Backup_Timeweeks"elsesed−i′/rotate/s/′"Log\_Backup\_Time weeks"
else
sed -i '/rotate/s/'"Log_Backup_Timeweeks"elsesed−i′/rotate/s/′"{Log_Backup_Time}”‘/26/g’ /etc/logrotate.conf
Log_Backup_Time=cat /etc/logrotate.conf |head -n 10|grep "rotate "| grep -v ^# | head -n 1|awk '{print $2}'
if [ $Log_Backup_Time -ge 26 ];then
echo “…[Y] Log backup Time: $Log_Backup_Time weeks”
else
echo “…[N] Log backup Time,Reset failed”
fi
fi
}
#检查会话超时时间
function CheckConnectionTimeout() {
Connection_Timeout=cat /etc/profile | grep 'export TMOUT' | grep -v ^# | cut -d= -f2
if [ -z Connection_Timeout];thensed−i′Connection\_Timeout ];then
sed -i 'Connection_Timeout];thensed−i′a export TMOUT=1800’ /etc/profile
elif [ $Connection_Timeout -gt 1800 -o Connection_Timeout−lt600];thensed−i′/TMOUT/s/′"Connection\_Timeout -lt 600 ];then
sed -i '/TMOUT/s/'"Connection_Timeout−lt600];thensed−i′/TMOUT/s/′"{Connection_Timeout}"‘/1800/g’ /etc/profile
fi
source /etc/profile
Connection_Timeout=cat /etc/profile | grep 'export TMOUT' | grep -v ^# | cut -d= -f2
if [ $Connection_Timeout -le 1800 -a $Connection_Timeout -ge 600 ];then
echo “…[Y] Connection timeout: $Connection_Timeout seconds”
else
echo “…[N] Connection timeout: Reset failed”
fi
}
#检查共享账户
function CheckSharedUser() {
usermod -L shutdown 2>/dev/null
usermod -L halt 2>/dev/null
echo “…[Y] Shared user: Locked”
}
#检查审计策略
function CheckAuditLogs() {
Audit_Logs=auditctl -s | grep enabled | awk '{print $2}'
if [ $Audit_Logs -ne 1 ];then
systemctl start auditd
systemctl enable auditd
fi
Audit_Logs=auditctl -s | grep enabled | awk '{print $2}'
if [ $Audit_Logs -eq 1 ];then
echo “…[Y] Audit Policy: $Audit_Logs Enable”
else
echo “…[N] Audit Policy: $Audit_Logs Disabled”
fi
}
#检查分权账户
function CheckAuthorizedUser() {
shenji=cat /etc/passwd |grep shenji | grep -v ^# | cut -d: -f 1
anquan=cat /etc/passwd |grep anquan | grep -v ^# | cut -d: -f 1
sysadmin=cat /etc/passwd |grep sysadmin | grep -v ^# | cut -d: -f 1
if [ -z KaTeX parse error: Expected 'EOF', got '#' at position 49: … shenji:In123!@#̲123|chpasswd
se…a shenji ALL = (root) NOPASSWD: /usr/bin/cat , /usr/bin/less , /usr/bin/more , /usr/bin/tail , /usr/bin/head’ /etc/sudoers
fi
if [ -z $anquan ];then
useradd anquan
echo anquan:In123!@#123|chpasswd
fi
if [ -z $sysadmin ];then
useradd sysadmin
echo sysadmin:In123!@#123|chpasswd
fi
shenji=cat /etc/passwd |grep shenji | grep -v ^# | cut -d: -f 1
anquan=cat /etc/passwd |grep anquan | grep -v ^# | cut -d: -f 1
sysadmin=cat /etc/passwd |grep sysadmin | grep -v ^# | cut -d: -f 1
if [ -z $shenji -o -z $anquan -o -z $sysadmin ];then
echo “…[N] Authorized user: $shenji, $anquan, $sysadmin”
else
echo “…[Y] Authorized user: $shenji, $anquan, $sysadmin”
fi
}
#检查登录失败锁定配置CentOS
function CheckLoginFailureLock_CentOS() {
Login_Failure_Lock=grep "pam\_tally2.so" /etc/pam.d/system-auth| grep -v ^#|head -n 1|awk '{print $7}'
if [ -z $Login_Failure_Lock ];then
sed -i ‘/pam_tally2.so/s/#auth/auth/g’ /etc/pam.d/system-auth
Login_Failure_Lock=grep "pam\_tally2.so" /etc/pam.d/system-auth| grep -v ^#|head -n 1|awk '{print $7}'
fi
if [ -z Login_Failure_Lock];thensed−i′Login\_Failure\_Lock ];then
sed -i 'Login_Failure_Lock];thensed−i′a auth required pam_tally2.so onerr=fail audit silent dent=5 unlock_time=600 even_deny_root root_unlock_time=600’ /etc/pam.d/system-auth
else
Login_Failure_Lock=grep "pam\_tally2.so onerr=fail audit silent dent=5 unlock\_time=600" /etc/pam.d/system-auth| grep -v ^#|awk '{print $7}'
if [ -z KaTeX parse error: Expected 'EOF', got '#' at position 60: …lly2.so/s/auth/#̲auth/g' /etc/pa…a auth required pam_tally2.so onerr=fail audit silent dent=5 unlock_time=600 even_deny_root root_unlock_time=600’ /etc/pam.d/system-auth
fi
fi
Login_Failure_Lock=grep "pam\_tally2.so onerr=fail audit silent dent=5 unlock\_time=600" /etc/pam.d/system-auth| grep -v ^#|awk '{print $7","$8","$10}'
if [ -z $Login_Failure_Lock ];then
echo “…[N] Login Failure Lock: Reset failed”
else
echo “…[Y] Login Failure Lock: $Login_Failure_Lock”
fi
}
#检查登录失败锁定配置SUSE
function CheckLoginFailureLock_SUSE() {
Login_Failure_Number=cat /etc/login.defs | grep LOGIN\_RETRIES | grep -v ^# | awk '{print $2}'
if [ -z $Login_Failure_Number ];then
sed -i ‘s/#LOGIN_RETRIES/LOGIN_RETRIES/’ /etc/login.defs
Login_Failure_Number=cat /etc/login.defs | grep LOGIN\_RETRIES | grep -v ^# | awk '{print $2}'
fi
if [ -z $Login_Failure_Number ];then
echo “…[N] Number of login failures: No configuration”
elif [ $Login_Failure_Number -le 8 -a $Login_Failure_Number -ge 3 ];then
echo “…[Y] Number of login failures: Login_Failure_Number"elsesed−i′/LOGIN_RETRIES/s/′"Login\_Failure\_Number"
else
sed -i '/LOGIN\_RETRIES/s/'"Login_Failure_Number"elsesed−i′/LOGIN_RETRIES/s/′"{Login_Failure_Number}”‘/5/g’ /etc/login.defs
Login_Failure_Number=cat /etc/login.defs | grep LOGIN\_RETRIES | grep -v ^# | awk '{print $2}'
if [ $Login_Failure_Number -le 8 -a $Login_Failure_Number -ge 3 ];then
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