6.iptables常用規則
阿新 • • 發佈:2019-02-06
-i 定時 rest accep org mon ping pri nat轉發
開啟ip段192.168.1.0/24端的80口 開啟ip段211.123.16.123/24端ip段的80口 # iptables -I INPUT -p tcp --dport 80 -j DROP # iptables -I INPUT -s 192.168.1.0/24 -p tcp --dport 80 -j ACCEPT # iptables -I INPUT -s 211.123.16.123/24 -p tcp --dport 80 -j ACCEPT 以上是臨時設置。 1.先備份iptables # cp /etc/sysconfig/iptables /var/tmp 2.然後保存iptables # service iptables save 3.重啟防火墻 #service iptables restart 以下是端口,先全部封再開某些的IP iptables -I INPUT -p tcp --dport 9889 -j DROP iptables -I INPUT -s 192.168.1.0/24 -p tcp --dport 9889 -j ACCEPT 如果用了NAT轉發記得配合以下才能生效 iptables -I FORWARD -p tcp --dport 80 -j DROP iptables -I FORWARD -s 192.168.1.0/24 -p tcp --dport 80 -j ACCEPT
常用的IPTABLES規則如下:
1. 只能收發郵件,別的都關閉 iptables -I Filter -m mac --mac-source 00:0F:EA:25:51:37 -j DROP iptables -I Filter -m mac --mac-source 00:0F:EA:25:51:37 -p udp --dport 53 -j ACCEPT iptables -I Filter -m mac --mac-source 00:0F:EA:25:51:37 -p tcp --dport 25 -j ACCEPT iptables -I Filter -m mac --mac-source 00:0F:EA:25:51:37 -p tcp --dport 110 -j ACCEPT 2. IPSEC NAT 策略 iptables -I PFWanPriv -d 192.168.100.2 -j ACCEPT iptables -t nat -A PREROUTING -p tcp --dport 80 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.100.2:80 iptables -t nat -A PREROUTING -p tcp --dport 1723 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.100.2:1723 iptables -t nat -A PREROUTING -p udp --dport 1723 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.100.2:1723 iptables -t nat -A PREROUTING -p udp --dport 500 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.100.2:500 iptables -t nat -A PREROUTING -p udp --dport 4500 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.100.2:4500 3.FTP服務器的NAT iptables -I PFWanPriv -p tcp --dport 21 -d 192.168.100.200 -j ACCEPT iptables -t nat -A PREROUTING -p tcp --dport 21 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.100.200:21 4.只允許訪問指定網址 iptables -A Filter -p udp --dport 53 -j ACCEPT iptables -A Filter -p tcp --dport 53 -j ACCEPT iptables -A Filter -d www.3322.org -j ACCEPT iptables -A Filter -d img.cn99.com -j ACCEPT iptables -A Filter -j DROP 5.開放一個IP的一些端口,其它都封閉 iptables -A Filter -p tcp --dport 80 -s 192.168.100.200 -d www.pconline.com.cn -j ACCEPT iptables -A Filter -p tcp --dport 25 -s 192.168.100.200 -j ACCEPT iptables -A Filter -p tcp --dport 109 -s 192.168.100.200 -j ACCEPT iptables -A Filter -p tcp --dport 110 -s 192.168.100.200 -j ACCEPT iptables -A Filter -p tcp --dport 53 -j ACCEPT iptables -A Filter -p udp --dport 53 -j ACCEPT iptables -A Filter -j DROP 6.多個端口 iptables -A Filter -p tcp -m multiport --destination-port 22,53,80,110 -s 192.168.20.3 -j REJECT 7.連續端口 iptables -A Filter -p tcp -m multiport --source-port 22,53,80,110 -s 192.168.20.3 -j REJECT iptables -A Filter -p tcp --source-port 2:80 -s 192.168.20.3 -j REJECT 8.指定時間上網 iptables -A Filter -s 10.10.10.253 -m time --timestart 6:00 --timestop 11:00 --days Mon,Tue,Wed,Thu,Fri,Sat,Sun -j DROP iptables -A Filter -m time --timestart 12:00 --timestop 13:00 --days Mon,Tue,Wed,Thu,Fri,Sat,Sun -j ACCEPT iptables -A Filter -m time --timestart 17:30 --timestop 8:30 --days Mon,Tue,Wed,Thu,Fri,Sat,Sun -j ACCEPT 9.禁止多個端口服務 iptables -A Filter -m multiport -p tcp --dport 21,23,80 -j ACCEPT 10.將WAN 口NAT到PC iptables -t nat -A PREROUTING -i $INTERNET_IF -d $INTERNET_ADDR -j DNAT --to-destination 192.168.0.1 11.將WAN口8000端口NAT到192。168。100。200的80端口 iptables -t nat -A PREROUTING -p tcp --dport 8000 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.100.200:80 12.MAIL服務器要轉的端口 iptables -t nat -A PREROUTING -p tcp --dport 110 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.100.200:110 iptables -t nat -A PREROUTING -p tcp --dport 25 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.100.200:25 13.只允許PING 202。96。134。133,別的服務都禁止 iptables -A Filter -p icmp -s 192.168.100.200 -d 202.96.134.133 -j ACCEPT iptables -A Filter -j DROP 14.禁用BT配置 iptables –A Filter –p tcp –dport 6000:20000 –j DROP 15.禁用QQ防火墻配置 iptables -A Filter -p udp --dport ! 53 -j DROP iptables -A Filter -d 218.17.209.0/24 -j DROP iptables -A Filter -d 218.18.95.0/24 -j DROP iptables -A Filter -d 219.133.40.177 -j DROP 16.基於MAC,只能收發郵件,其它都拒絕 iptables -I Filter -m mac --mac-source 00:0A:EB:97:79:A1 -j DROP iptables -I Filter -m mac --mac-source 00:0A:EB:97:79:A1 -p tcp --dport 25 -j ACCEPT iptables -I Filter -m mac --mac-source 00:0A:EB:97:79:A1 -p tcp --dport 110 -j ACCEPT 17.禁用MSN配置 iptables -A Filter -p udp --dport 9 -j DROP iptables -A Filter -p tcp --dport 1863 -j DROP iptables -A Filter -p tcp --dport 80 -d 207.68.178.238 -j DROP iptables -A Filter -p tcp --dport 80 -d 207.46.110.0/24 -j DROP 18.只允許PING 202。96。134。133 其它公網IP都不許PING iptables -A Filter -p icmp -s 192.168.100.200 -d 202.96.134.133 -j ACCEPT iptables -A Filter -p icmp -j DROP 19.禁止某個MAC地址訪問internet: iptables -I Filter -m mac --mac-source 00:20:18:8F:72:F8 -j DROP 20.禁止某個IP地址的PING: iptables –A Filter –p icmp –s 192.168.0.1 –j DROP 21.禁止某個IP地址服務: iptables –A Filter -p tcp -s 192.168.0.1 --dport 80 -j DROP iptables –A Filter -p udp -s 192.168.0.1 --dport 53 -j DROP 22.只允許某些服務,其他都拒絕(2條規則) iptables -A Filter -p tcp -s 192.168.0.1 --dport 1000 -j ACCEPT iptables -A Filter -j DROP 23.禁止某個IP地址的某個端口服務 iptables -A Filter -p tcp -s 10.10.10.253 --dport 80 -j ACCEPT iptables -A Filter -p tcp -s 10.10.10.253 --dport 80 -j DROP 24.禁止某個MAC地址的某個端口服務 iptables -I Filter -p tcp -m mac --mac-source 00:20:18:8F:72:F8 --dport 80 -j DROP 25.禁止某個MAC地址訪問internet: iptables -I Filter -m mac --mac-source 00:11:22:33:44:55 -j DROP 26.禁止某個IP地址的PING: iptables –A Filter –p icmp –s 192.168.0.1 –j DROP
6.iptables常用規則