1.先備份iptables # cp /etc/sysconfig/iptables /var/tmp 需要開(kāi)80端口,指定IP和局域網(wǎng) 下面三行的意思: 先關(guān)閉所有的80端口 開(kāi)啟ip段192.168.1.0/24端的80口 開(kāi)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(shí)設(shè)置。 2.然后保存iptables # service iptables save 3.重啟防火墻 #service iptables restart ===============以下是轉(zhuǎn)載================================================ 以下是端口,先全部封再開(kāi)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(zhuǎn)發(fā)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(guī)則如下: 只能收發(fā)郵件,別的都關(guān)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 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 FTP服務(wù)器的NAT iptables -I PFWanPriv -p tcp --dport 21 -d 192.168.1.22 -j ACCEPT iptables -t nat -A PREROUTING -p tcp --dport 21 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.1.22:21 只允許訪問(wèn)指定網(wǎng)址 iptables -A Filter -p udp --dport 53 -j ACCEPT iptables -A Filter -p tcp --dport 53 -j ACCEPT iptables -A Filter -d www.ctohome.com -j ACCEPT iptables -A Filter -d www.guowaivps.com -j ACCEPT iptables -A Filter -j DROP 開(kāi)放一個(gè)IP的一些端口,其它都封閉 iptables -A Filter -p tcp --dport 80 -s 192.168.1.22 -d www.pconline.com.cn -j ACCEPT iptables -A Filter -p tcp --dport 25 -s 192.168.1.22 -j ACCEPT iptables -A Filter -p tcp --dport 109 -s 192.168.1.22 -j ACCEPT iptables -A Filter -p tcp --dport 110 -s 192.168.1.22 -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 多個(gè)端口 iptables -A Filter -p tcp -m multiport --destination-port 22,53,80,110 -s 192.168.20.3 -j REJECT 連續(xù)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 指定時(shí)間上網(wǎng) 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 禁止多個(gè)端口服務(wù) iptables -A Filter -m multiport -p tcp --dport 21,23,80 -j ACCEPT 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 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 192.168.1.22:80 MAIL服務(wù)器要轉(zhuǎn)的端口 iptables -t nat -A PREROUTING -p tcp --dport 110 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.1.22:110 iptables -t nat -A PREROUTING -p tcp --dport 25 -d $INTERNET_ADDR -j DNAT --to-destination 192.168.1.22:25 只允許PING 202。96。134。133,別的服務(wù)都禁止 iptables -A Filter -p icmp -s 192.168.1.22 -d 202.96.134.133 -j ACCEPT iptables -A Filter -j DROP 禁用BT配置 iptables –A Filter –p tcp –dport 6000:20000 –j DROP 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 基于MAC,只能收發(fā)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 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 只允許PING 202。96。134。133 其它公網(wǎng)IP都不許PING iptables -A Filter -p icmp -s 192.168.1.22 -d 202.96.134.133 -j ACCEPT iptables -A Filter -p icmp -j DROP 禁止某個(gè)MAC地址訪問(wèn)internet: iptables -I Filter -m mac --mac-source 00:20:18:8F:72:F8 -j DROP 禁止某個(gè)IP地址的PING: iptables –A Filter –p icmp –s 192.168.0.1 –j DROP 禁止某個(gè)IP地址服務(wù): 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 只允許某些服務(wù),其他都拒絕(2條規(guī)則) iptables -A Filter -p tcp -s 192.168.0.1 --dport 1000 -j ACCEPT iptables -A Filter -j DROP 禁止某個(gè)IP地址的某個(gè)端口服務(wù) 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 禁止某個(gè)MAC地址的某個(gè)端口服務(wù) iptables -I Filter -p tcp -m mac --mac-source 00:20:18:8F:72:F8 --dport 80 -j DROP 禁止某個(gè)MAC地址訪問(wèn)internet: iptables -I Filter -m mac --mac-source 00:11:22:33:44:55 -j DROP 禁止某個(gè)IP地址的PING: iptables –A Filter –p icmp –s 192.168.0.1 –j DROP |
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來(lái)自: SamBookshelf > 《防火墻》