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本文深入探讨了Gentoo服务器的安全加固策略,详细介绍了针对该操作系统的服务器加固方案,旨在提升系统安全性,防止潜在的网络攻击和数据泄露。
本文目录导读:
随着网络技术的飞速发展,服务器的安全性日益受到重视,Gentoo作为一种高度可定制的Linux发行版,在服务器领域有着广泛的应用,本文将详细介绍如何在Gentoo服务器上进行安全加固,以提高系统安全性,确保业务稳定运行。
更新系统和软件包
1、更新系统内核
确保系统内核是最新的,运行以下命令更新内核:
emerge -u sys-kernel/gentoo-sources
2、更新软件包
使用以下命令更新所有软件包:
emerge -uND world
配置防火墙
1、安装防火墙软件
Gentoo默认不安装防火墙软件,我们可以选择安装iptables
或nftables
,以下以iptables
为例:
emerge net-firewall/iptables
2、配置防火墙规则
编辑/etc/iptables/rules.v4
文件,添加以下规则:
*mangle :PREROUTING ACCEPT :POSTROUTING ACCEPT :OUTPUT ACCEPT :INPUT ACCEPT -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A INPUT -j DROP COMMIT
3、开启防火墙
rc-service iptables start rc-update add iptables
配置SSH服务
1、修改SSH配置文件
编辑/etc/ssh/sshd_config
文件,进行以下配置:
Port 2222 PermitRootLogin no PasswordAuthentication no PermitEmptyPasswords no ChallengeResponseAuthentication no UsePAM yes X11Forwarding no
2、重启SSH服务
rc-service sshd restart
限制root权限
1、创建sudo用户
创建一个普通用户,并为其配置sudo权限:
useradd -m -s /bin/bash user1 passwd user1 visudo
在visudo
文件中,添加以下内容:
user1 ALL=(ALL) NOPASSWD:ALL
2、限制root权限
编辑/etc/security/access.conf
文件,添加以下内容:
root:ALL EXCEPT (wheel)
配置安全增强工具
1、安装AppArmor
emerge sys-apparmor/apparmor emerge sys-apparmor/apparmor-parser
2、配置AppArmor
编辑/etc/apparmor.d/local/usr.sbin.httpd2-prefork
文件,添加以下内容:
#include <tunables/global> .profile /usr/sbin/httpd2-prefork { #include <abstractions/base> #include <abstractions/nginx> #include <abstractions/nameservice> #include <abstractions/file> capability net_raw, capability sys_admin, capability setuid, capability setgid, capability dac_override, capability dac_read_search, capability fowner, capability kill, capability mknod, capability net_bind_service, capability net_broadcast, capability net_admin, capability sys_nice, capability sys_tty_config, capability sys_resource, capability sys_time, capability sysgeries, capability mac_admin, capability mac_override, /etc/httpd/** r, /etc/httpd/.* r, /var/www/** r, /var/www/.* r, /usr/lib/httpd/** r, /usr/lib/httpd/.* r, /usr/sbin/httpd2-prefork mr, signal, file, umount, pivot_root, mount, ptrace, quota, setfsuid, setfsgid, getfsuid, getfsgid, fchown, fchmod, fchownat, fchmodat, chown, chgrp, chmod, utime, rename, unlink, link, symlink, truncate, mknod, exec, open, getattr, read, write, create, delete, listen, accept, connect, sendto, receivefrom, shutdown, bind, socket, setsockopt, getsockopt, flock, ftruncate, fsync, fdatasync, prealloc, fchdir, chdir, fgetfile, fsetfile, pivot_root, umount, setreuid, setregid, setresuid, setresgid, getresuid, getresgid, personality, sysctl, init_module, delete_module, ptrace, quota, ioprio_set, ioprio_get, binder, Pepper, Timber, setrlimit, prctl, getrlimit, pivot_root, umount, mount, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root, pivot_root,
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Gentoo服务器安全加固:怎么进行服务器安全加固