ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:21 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:23 REJECT tcp -- 0.0.0.0/0 0.0.0.0/0 reject-with icmp-port-unreachable...
DNAT tcp -- anywhere anywhere tcp dpt:webcache to:172.17.0.8:8080
target prot opt source destination ACCEPT tcp -- anywhere anywhere tcp dpt:webcacheACCEPT tcp -- anywhere anywhere tcp dpt:webcacheACCEPT tcp -- anywhere anywhere tcp dpt:http state NEW,ESTABLISHEDACCEPT tcp -- anywhere anywhere tcp dpt:webcache state NEW,ESTABLISHED Chain FORWARD (policy ACCEPT)...
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:ssh REJECT all -- anywhere anywhere reject-with icmp-host-prohibited DROP tcp -- 192.168.0.6 anywhere multiport dports ssh,telnet,http,webcache Chain FORWARD (policy ACCEPT) target prot opt source destination REJECT all -- anywhere anywhere ...
ACCEPT tcp -- anywhere anywhere tcp dpt:www DROP all -- anywhere anywhere 1. 2. 3. 4. 5. 6. 7. 8. 因为我们刚才没有指定一个接口或一个协议,所以除了web和ssh流量外其他任何流量都会被阻断。 ◆ 编辑 iptables 到目前为止我们设置过程中唯一的问题是回环端口(loopbakc)也被阻断了。我们本可以通过...
0 0 ACCEPT tcp -- 12.12.12.12 0.0.0.0/0 tcp dpt:80Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destinationChain OUTPUT (policy ACCEPT 15 packets, 1592 bytes) pkts bytes target prot opt in out source destinationcron 计划任务 ...
等效于"--protocol"选项,即指定协议,支持指定的协议有:tcp, udp, udplite, icmp, icmpv6,esp, ah, sctp, mhorthe special keyword"all"。如果不指定协议默认则是"all",表示所有协议。 -i: 等效于"--in-interface"选项,即数据报文流入的接口,只能应用于数据报文流入的环节,只能应用于PREROUTING,INPUT和FORWARD...
(policyDROP15packets,1321bytes)||pkts bytes target prot optinout source destination||00ACCEPTall--lo*0.0.0.0/00.0.0.0/0||1239128ACCEPTtcp--**192.168.1.0/240.0.0.0/0tcp dpt:22|+---+[root@linux-node1~]# iptables-LINPUT-nv--line-number+---...
# iptables -t filter -A INPUT -p tcp -dport 22 -j ACCEPT //允许访问目标主机22端口 # iptables -nL Chain INPUT (policy DROP) target prot opt source destination ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 # curl 192.168.4.51 #其他主机无法访问 # iptables -t filter -A INPUT -p...
我需要更改防火墙规则以允许访问系统上的某个TCP端口。那么，有什么好方法在CentOS或RHEL系统的防火墙上...