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7下firewall与IPtabls常用操作,7中防火墙的布置和使

发布时间:2019-08-28 13:25编辑:操作系统浏览(113)

    Firewall 配置,firewall配置

    在 CentOS 7
    暫時開放 ftp 服務
    # firewall-cmd --add-service=ftp

    永世開放 ftp 服務
    # firewall-cmd --add-service=ftp --permanent

    千古關閉
    # firewall-cmd --remove-service=ftp --permanent
    success

    讓設定生效
    # systemctl restart firewalld

    檢視設定是或不是见效
    # iptables -L -n | grep 21
    ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0            tcp dpt:21 ctstate NEW

    檢查防火牆狀態
    # firewall-cmd --state
    running

    # systemctl stop firewalld
    # firewall-cmd --state
    not running

    # firewall-cmd --list-all
    public (default)
      interfaces:
      sources:
      services: dhcpv6-client ftp ssh
      ports:
      masquerade: no
      forward-ports:
      icmp-blocks:
      rich rules:

    在 FirewallD 的服務名稱
    # firewall-cmd --get-service
    amanda-client bacula bacula-client dhcp dhcpv6 dhcpv6-client dns ftp high-availability http https imaps ipp ipp-client ipsec kerberos kpasswd ldap ldaps libvirt libvirt-tls mdns mountd ms-wbt mysql nfs ntp openvpn pmcd pmproxy pmwebapi pmwebapis pop3s postgresql proxy-dhcp radius rpc-bind samba samba-client smtp ssh telnet tftp tftp-client transmission-client vnc-server wbem-https

    查詢服務的啟用狀態
    # firewall-cmd --query-service ftp
    yes
    # firewall-cmd --query-service ssh
    yes
    # firewall-cmd --query-service samba
    no
    # firewall-cmd --query-service http
    no

    机动投入要開放的 Port
    # firewall-cmd --add-port=3128/tcp --permanent
    # firewall-cmd --list-all
    public (default)
      interfaces:
      sources:
      services: dhcpv6-client ftp ssh
      ports: 3128/tcp
      masquerade: no
      forward-ports:
      icmp-blocks:
      rich rules:   开放地点段 firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -s 192.168.100.约得其半4 -j ACCEPT    

    启用NAT

      firewall-cmd --permanent --direct --passthrough ipv4  -t nat -A POSTROUTING -s 192.168.100.0/24 -j SNAT --to-source 106.3.226.201

    #开启系统路由转发功能 vi /etc/sysctl.conf net.ipv4.ip_forward=1 net.ipv4.conf.all.rp_filter=0 net.ipv4.conf.default.rp_filter=0

      重启防火墙 firewall-cmd --reload 关闭firewall:

    systemctl stop firewalld.service #停止firewall
    systemctl disable firewalld.service #不准firewall开机运维
    firewall-cmd --state #翻看暗许防火墙状态(关闭后突显notrunning,开启后突显running)

      屏蔽钦命IP访谈: firewall-cmd --permanent --add-rich-rule='rule family=ipv4 source address="120.132.126.133" drop'

    配置,firewall配置 在 CentOS 7 暫時開放 ftp 服務 #firewall-cmd --add-service=ftp 永世開放 ftp 服務 #firewall-cmd --add-service=ftp --permanent 长久關閉...

    CentOS 7 中firewall-cmd命令

    在 CentOS 7

    临时开放 ftp服务
    #firewall-cmd --add-service=ftp

    恒久开放 ftp服务
    #firewall-cmd --add-service=ftp --permanent
    世代关闭
    #firewall-cmd --remove-service=ftp --permanent
    success

    让设定生效
    #systemctl restart firewalld

    反省设定是不是见效
    #iptables -L -n | grep 21
    ACCEPTtcp--0.0.0.0/00.0.0.0/0tcp dpt:21 ctstate NEW

    检查防火墙状态
    #firewall-cmd --state
    running

    #systemctl stop firewalld
    #firewall-cmd --state
    not running

    #firewall-cmd --list-all
    public (default)
    interfaces:
    sources:
    services: dhcpv6-client ftp ssh
    ports:
    masquerade: no
    forward-ports:
    icmp-blocks:
    rich rules:

    在 FirewallD 的劳务名称
    #firewall-cmd --get-service
    amanda-client bacula bacula-client dhcp dhcpv6 dhcpv6-client dns ftp high-availability http https imaps ipp ipp-client ipsec kerberos kpasswd ldap ldaps libvirt libvirt-tls mdns mountd ms-wbt mysql nfs ntp openvpn pmcd pmproxy pmwebapi pmwebapis pop3s postgresql proxy-dhcp radius rpc-bind samba samba-client smtp ssh telnet tftp tftp-client transmission-client vnc-server wbem-https

    询问服务的启用境况
    #firewall-cmd --query-service ftp
    yes
    #firewall-cmd --query-service ssh
    yes
    #firewall-cmd --query-service samba
    no
    #firewall-cmd --query-service http
    no

    机关投入要开放的 Port
    #firewall-cmd --add-port=3128/tcp
    #firewall-cmd --list-all
    public (default)
    interfaces:
    sources:
    services: dhcpv6-client ftp ssh
    ports:3128/tcp
    masquerade: no
    forward-ports:
    icmp-blocks:
    rich rules:

    7 中firewall-cmd命令 在 CentOS 7 暂时开放 ftp服务 #firewall-cmd --add-service=ftp 永世开放 ftp服务 #firewall-cmd --add-service=ftp --permanent 永恒关闭 #...

    centos 7下firewall与IPtabls常用操作

    一、配置防火墙,开启80端口、3306端口

    CentOS 7.0私下认可使用的是firewall作为防火墙,这里改为iptables防火墙。

    1、关闭firewall:

    systemctl stop firewalld.service#停止firewall

    systemctl disable firewalld.service#取缔firewall开机运营

    IT网,

    2、安装iptables防火墙

    yum install iptables-services#安装

    vi /etc/sysconfig/iptables#编写制定防火墙配置文件

    # Firewall configuration written by system-config-firewallLinux学习,http:// linux.it.net.cn

    # Manual customization of this file is not recommended.

    *filter

    :INPUT ACCEPT [0:0]

    :FORWARD ACCEPT [0:0]

    :OUTPUT ACCEPT [0:0]Linux学习,http:// linux.it.net.cn

    -A INPUT -m state --state ESTABLISHED,RELATED -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 -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT

    -A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT

    -A INPUT -j REJECT --reject-with icmp-host-prohibited

    -A FORWARD -j REJECT --reject-with icmp-host-prohibitedIT网,

    COMMITIT网,

    :wq!#保存退出

    systemctl restart iptables.service#末尾重启防火墙使配置生效

    systemctl enable iptables.service#安装防火墙开机运转

    二、关闭SELINUX

    vi /etc/selinux/config

    #SELINUX=enforcing#注释掉

    #SELINUXTYPE=targeted#注释掉IT网,

    SELINUX=disabled#增加Linux学习,http:// linux.it.net.cn

    :wq!#保存退出

    setenforce 0#使配置立刻生效

    在 CentOS 7
    暫時開放 ftp 服務
    #firewall-cmd--add-service=ftp

    世世代代開放 ftp 服務
    #firewall-cmd --add-service=ftp--permanent
    长久關閉
    #firewall-cmd --remove-service=ftp--permanent
    success

    讓設定生效
    #systemctl restartfirewalld

    檢視設定是还是不是见效
    #iptables -L -n | grep21
    ACCEPTtcp --0.0.0.0/00.0.0.0/0tcp dpt:21 ctstate NEW

    檢查防火牆狀態
    #firewall-cmd --state
    running

    #systemctl stopfirewalld
    #firewall-cmd --state
    not running

    #firewall-cmd--list-all
    public (default)
    interfaces:
    sources:
    services:dhcpv6-client ftp ssh
    ports:
    masquerade:no
    forward-ports:
    icmp-blocks:
    richrules:

    在 FirewallD 的服務名稱
    #firewall-cmd--get-service
    amanda-client bacula bacula-clientdhcp dhcpv6 dhcpv6-client dns ftp high-availability http httpsimaps ipp ipp-client ipsec kerberos kpasswd ldap ldaps libvirtlibvirt-tls mdns mountd ms-wbt mysql nfs ntp openvpn pmcd pmproxypmwebapi pmwebapis pop3s postgresql proxy-dhcp radius rpc-bindsamba samba-client smtp ssh telnet tftp tftp-clienttransmission-client vnc-server wbem-https

    查詢服務的啟用狀態
    #firewall-cmd --query-serviceftp
    yes
    #firewall-cmd --query-servicessh
    yes
    #firewall-cmd --query-servicesamba
    no
    #firewall-cmd --query-servicehttp
    no

    自行投入要開放的 Port
    #firewall-cmd--add-port=3128/tcp
    #firewall-cmd--list-all
    public (default)
    interfaces:
    sources:
    services:dhcpv6-client ftp ssh
    ports:3128/tcp
    masquerade:no
    forward-ports:
    icmp-blocks:
    rich rules:

    7下firewall与IPtabls常用操作 一、配置防火墙,开启80端口、3306端口 CentOS 7.0默许使用的是firewall作为防火墙,这里改为iptables防火墙。...

    CentOS 7 中firewall-cmd命令,centosfirewall-cmd

    在 CentOS 7

    一时开放 ftp 服务
    # firewall-cmd --add-service=ftp

    千古开放 ftp 服务
    # firewall-cmd --add-service=ftp --permanent
    世代关闭
    # firewall-cmd --remove-service=ftp --permanent
    success

    让设定生效
    # systemctl restart firewalld

    自己议论设定是不是见效
    # iptables -L -n | grep 21
    ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0            tcp dpt:21 ctstate NEW

     检查防火墙状态
    # firewall-cmd --state
    running

    # systemctl stop firewalld
    # firewall-cmd --state
    not running

    # firewall-cmd --list-all
    public (default)
      interfaces:
      sources:
      services: dhcpv6-client ftp ssh
      ports:
      masquerade: no
      forward-ports:
      icmp-blocks:
      rich rules:

    在 FirewallD 的劳动名称
    # firewall-cmd --get-service
    amanda-client bacula bacula-client dhcp dhcpv6 dhcpv6-client dns ftp high-availability http https imaps ipp ipp-client ipsec kerberos kpasswd ldap ldaps libvirt libvirt-tls mdns mountd ms-wbt mysql nfs ntp openvpn pmcd pmproxy pmwebapi pmwebapis pop3s postgresql proxy-dhcp radius rpc-bind samba samba-client smtp ssh telnet tftp tftp-client transmission-client vnc-server wbem-https

    询问服务的启用情形
    # firewall-cmd --query-service ftp
    yes
    # firewall-cmd --query-service ssh
    yes
    # firewall-cmd --query-service samba
    no
    # firewall-cmd --query-service http
    no

    活动参预要开放的 Port
    # firewall-cmd --add-port=3128/tcp
    # firewall-cmd --list-all
    public (default)
      interfaces:
      sources:
      services: dhcpv6-client ftp ssh
      ports: 3128/tcp
      masquerade: no
      forward-ports:
      icmp-blocks:
      rich rules:

    7 中firewall-cmd命令,centosfirewall-cmd 在 CentOS 7 一时半刻开放 ftp服务 # firewall-cmd --add-service=ftp 永世开放 ftp服务 # firewall-cmd --add-service=ftp --p...

    OdysseyHEL7 中利用了firewalld取代了原来的iptables,操作设置和原先有一点点分歧:

    查看防火墙状态:systemctl status firewalld

    运维防火墙:systemctl start firewalld

    终止防火墙:systemctl stop firewalld

    防火墙中的一切都与一个依旧多少个区域相关联,下边临各样区开展表达:

    Zone         Description 
    -----------------------------------------------------
    drop (immutable)     Deny all incoming connections, outgoing ones are accepted. 
    block (immutable)    Deny all incoming connections, with ICMP host prohibited messages issued. 
    trusted (immutable)    Allow all network connections 
    public         Public areas, do not trust other computers
    external         For computers with masquerading enabled, protecting a local network 
    dmz          For computers publicly accessible with restricted access. 
    work          For trusted work areas 
    home          For trusted home network connections 
    internal         For internal network, restrict incoming connections
    

    drop(丢弃) 其余接收的互连网数据包都被取消,未有别的回复。仅能有发送出去的网络连接。

    block(限制)
    别的接收的互连网连接都被 IPv4 的 icmp-host-prohibited 音信和 IPv6 的 icmp6-adm-prohibited 音信所不容。

    public(公共)
    在公私区域内选拔,不能够相信互连网内的另外Computer不会对您的管理器变成危机,只可以收到经过抉择的三番五次。

    external(外部)
    特意是为路由器启用了装模做样功用的外界网。您不可能相信来自网络的其他计量,无法相信它们不会对您的计算机形成风险,只可以收取经过精选的延续。

    本文由1010cc时时彩经典版发布于操作系统,转载请注明出处:7下firewall与IPtabls常用操作,7中防火墙的布置和使

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