yum install iptables
iptables -L -n
iptables -A OUTPUT -m state --state NEW -p tcp -d 182.92.228.160 --dport 80 -j ACCEPT
iptables -L INPUT --line-numbers
iptables -D INPUT 3
1 /sbin/iptables -P INPUT ACCEPT 2 /sbin/iptables -F 3 /sbin/iptables -X 4 /sbin/iptables -Z 5 6 /sbin/iptables -A INPUT -i lo -j ACCEPT 7 /sbin/iptables -A INPUT -p tcp --dport 22 -j ACCEPT 8 /sbin/iptables -A INPUT -p tcp --dport 80 -j ACCEPT 9 /sbin/iptables -A INPUT -p tcp --dport 8080 -j ACCEPT 10 /sbin/iptables -A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT 11 /sbin/iptables -A INPUT -m state --state ESTABLISHED -j ACCEPT 12 /sbin/iptables -P INPUT DROP 13 service iptables save
Linux系统脚本
1 #!/bin/bash 2 ######################################### 3 #Function: linux drop port 4 #Usage: bash linux_drop_port.sh 5 #Author: Customer Service Department 6 #Company: Alibaba Cloud Computing 7 #Version: 2.0 8 ######################################### 9 10 check_os_release() 11 { 12 while true 13 do 14 os_release=$(grep "Red Hat Enterprise Linux Server release" /etc/issue 2>/dev/null) 15 os_release_2=$(grep "Red Hat Enterprise Linux Server release" /etc/redhat-release 2>/dev/null) 16 if [ "$os_release" ] && [ "$os_release_2" ] 17 then 18 if echo "$os_release"|grep "release 5" >/dev/null 2>&1 19 then 20 os_release=redhat5 21 echo "$os_release" 22 elif echo "$os_release"|grep "release 6" >/dev/null 2>&1 23 then 24 os_release=redhat6 25 echo "$os_release" 26 else 27 os_release="" 28 echo "$os_release" 29 fi 30 break 31 fi 32 os_release=$(grep "Aliyun Linux release" /etc/issue 2>/dev/null) 33 os_release_2=$(grep "Aliyun Linux release" /etc/aliyun-release 2>/dev/null) 34 if [ "$os_release" ] && [ "$os_release_2" ] 35 then 36 if echo "$os_release"|grep "release 5" >/dev/null 2>&1 37 then 38 os_release=aliyun5 39 echo "$os_release" 40 elif echo "$os_release"|grep "release 6" >/dev/null 2>&1 41 then 42 os_release=aliyun6 43 echo "$os_release" 44 else 45 os_release="" 46 echo "$os_release" 47 fi 48 break 49 fi 50 os_release=$(grep "CentOS release" /etc/issue 2>/dev/null) 51 os_release_2=$(grep "CentOS release" /etc/*release 2>/dev/null) 52 if [ "$os_release" ] && [ "$os_release_2" ] 53 then 54 if echo "$os_release"|grep "release 5" >/dev/null 2>&1 55 then 56 os_release=centos5 57 echo "$os_release" 58 elif echo "$os_release"|grep "release 6" >/dev/null 2>&1 59 then 60 os_release=centos6 61 echo "$os_release" 62 else 63 os_release="" 64 echo "$os_release" 65 fi 66 break 67 fi 68 os_release=$(grep -i "ubuntu" /etc/issue 2>/dev/null) 69 os_release_2=$(grep -i "ubuntu" /etc/lsb-release 2>/dev/null) 70 if [ "$os_release" ] && [ "$os_release_2" ] 71 then 72 if echo "$os_release"|grep "Ubuntu 10" >/dev/null 2>&1 73 then 74 os_release=ubuntu10 75 echo "$os_release" 76 elif echo "$os_release"|grep "Ubuntu 12.04" >/dev/null 2>&1 77 then 78 os_release=ubuntu1204 79 echo "$os_release" 80 elif echo "$os_release"|grep "Ubuntu 12.10" >/dev/null 2>&1 81 then 82 os_release=ubuntu1210 83 echo "$os_release" 84 else 85 os_release="" 86 echo "$os_release" 87 fi 88 break 89 fi 90 os_release=$(grep -i "debian" /etc/issue 2>/dev/null) 91 os_release_2=$(grep -i "debian" /proc/version 2>/dev/null) 92 if [ "$os_release" ] && [ "$os_release_2" ] 93 then 94 if echo "$os_release"|grep "Linux 6" >/dev/null 2>&1 95 then 96 os_release=debian6 97 echo "$os_release" 98 else 99 os_release="" 100 echo "$os_release" 101 fi 102 break 103 fi 104 os_release=$(grep "openSUSE" /etc/issue 2>/dev/null) 105 os_release_2=$(grep "openSUSE" /etc/*release 2>/dev/null) 106 if [ "$os_release" ] && [ "$os_release_2" ] 107 then 108 if echo "$os_release"|grep "13.1" >/dev/null 2>&1 109 then 110 os_release=opensuse131 111 echo "$os_release" 112 else 113 os_release="" 114 echo "$os_release" 115 fi 116 break 117 fi 118 break 119 done 120 } 121 122 exit_script() 123 { 124 echo -e " 33[1;40;31mInstall $1 error,will exit. 33[0m" 125 rm -f $LOCKfile 126 exit 1 127 } 128 129 config_iptables() 130 { 131 iptables -I OUTPUT 1 -p tcp -m multiport --dport 21,22,23,25,53,80,135,139,443,445 -j DROP 132 iptables -I OUTPUT 2 -p tcp -m multiport --dport 1433,1314,1521,2222,3306,3433,3389,4899,8080,18186 -j DROP 133 iptables -I OUTPUT 3 -p udp -j DROP 134 iptables -nvL 135 } 136 137 ubuntu_config_ufw() 138 { 139 ufw deny out proto tcp to any port 21,22,23,25,53,80,135,139,443,445 140 ufw deny out proto tcp to any port 1433,1314,1521,2222,3306,3433,3389,4899,8080,18186 141 ufw deny out proto udp to any 142 ufw status 143 } 144 145 ####################Start################### 146 #check lock file ,one time only let the script run one time 147 LOCKfile=/tmp/.$(basename $0) 148 if [ -f "$LOCKfile" ] 149 then 150 echo -e " 33[1;40;31mThe script is already exist,please next time to run this script. 33[0m" 151 exit 152 else 153 echo -e " 33[40;32mStep 1.No lock file,begin to create lock file and continue. 33[40;37m" 154 touch $LOCKfile 155 fi 156 157 #check user 158 if [ $(id -u) != "0" ] 159 then 160 echo -e " 33[1;40;31mError: You must be root to run this script, please use root to execute this script. 33[0m" 161 rm -f $LOCKfile 162 exit 1 163 fi 164 165 echo -e " 33[40;32mStep 2.Begen to check the OS issue. 33[40;37m" 166 os_release=$(check_os_release) 167 if [ "X$os_release" == "X" ] 168 then 169 echo -e " 33[1;40;31mThe OS does not identify,So this script is not executede. 33[0m" 170 rm -f $LOCKfile 171 exit 0 172 else 173 echo -e " 33[40;32mThis OS is $os_release. 33[40;37m" 174 fi 175 176 echo -e " 33[40;32mStep 3.Begen to config firewall. 33[40;37m" 177 case "$os_release" in 178 redhat5|centos5|redhat6|centos6|aliyun5|aliyun6) 179 service iptables start 180 config_iptables 181 ;; 182 debian6) 183 config_iptables 184 ;; 185 ubuntu10|ubuntu1204|ubuntu1210) 186 ufw enable <<EOF 187 y 188 EOF 189 ubuntu_config_ufw 190 ;; 191 opensuse131) 192 config_iptables 193 ;; 194 esac 195 196 echo -e " 33[40;32mConfig firewall success,this script now exit! 33[40;37m" 197 rm -f $LOCKfile
[root@iZ942bg57piZ storage]# netstat -tunl Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 0.0.0.0:48 0.0.0.0:* LISTEN udp 0 0 120.24.152.12:123 0.0.0.0:* udp 0 0 10.45.177.31:123 0.0.0.0:* udp 0 0 127.0.0.1:123 0.0.0.0:* udp 0 0 0.0.0.0:123 0.0.0.0:* [root@iZ942bg57piZ storage]#
[root@iZ942bg57piZ storage]# netstat -tunp Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 64 120.24.152.12:48 183.128.163.147:13553 ESTABLISHED 1317/sshd tcp 0 0 120.24.152.12:48 183.128.163.147:13770 ESTABLISHED 1453/sshd