iptables 快查
iptables 快查
iptables 参数快查表
root@Perry-alis:~# iptables -h
iptables v1.8.4
Usage: iptables -[ACD] chain rule-specification [options]
iptables -I chain [rulenum] rule-specification [options]
iptables -R chain rulenum rule-specification [options]
iptables -D chain rulenum [options]
iptables -[LS] [chain [rulenum]] [options]
iptables -[FZ] [chain] [options]
iptables -[NX] chain
iptables -E old-chain-name new-chain-name
iptables -P chain target [options]
iptables -h (print this help information)
Commands:
Either long or short options are allowed.
--append -A chain Append to chain
--check -C chain Check for the existence of a rule
--delete -D chain Delete matching rule from chain
--delete -D chain rulenum
Delete rule rulenum (1 = first) from chain
--insert -I chain [rulenum]
Insert in chain as rulenum (default 1=first)
--replace -R chain rulenum
Replace rule rulenum (1 = first) in chain
--list -L [chain [rulenum]]
List the rules in a chain or all chains
--list-rules -S [chain [rulenum]]
Print the rules in a chain or all chains
--flush -F [chain] Delete all rules in chain or all chains
--zero -Z [chain [rulenum]]
Zero counters in chain or all chains
--new -N chain Create a new user-defined chain
--delete-chain
-X [chain] Delete a user-defined chain
--policy -P chain target
Change policy on chain to target
--rename-chain
-E old-chain new-chain
Change chain name, (moving any references)
Options:
--ipv4 -4 Nothing (line is ignored by ip6tables-restore)
--ipv6 -6 Error (line is ignored by iptables-restore)
[!] --protocol -p proto protocol: by number or name, eg. `tcp'
[!] --source -s address[/mask][...]
source specification
[!] --destination -d address[/mask][...]
destination specification
[!] --in-interface -i input name[+]
network interface name ([+] for wildcard)
--jump -j target
target for rule (may load target extension)
--goto -g chain
jump to chain with no return
--match -m match
extended match (may load extension)
--numeric -n numeric output of addresses and ports
[!] --out-interface -o output name[+]
network interface name ([+] for wildcard)
--table -t table table to manipulate (default: `filter')
--verbose -v verbose mode
--wait -w [seconds] maximum wait to acquire xtables lock before give up
--wait-interval -W [usecs] wait time to try to acquire xtables lock
default is 1 second
--line-numbers print line numbers when listing
--exact -x expand numbers (display exact values)
[!] --fragment -f match second or further fragments only
--modprobe=<command> try to insert modules using this command
--set-counters PKTS BYTES set the counter during insert/append
[!] --version -V print package version.
| 命令选项/参数 | 完整参数 | 描述 |
|---|---|---|
| -A chain | --append chain | 向指定链中添加一条规则 |
| -C chain | --check chain | 检查是否存在匹配的规则 |
| -D chain | --delete chain | 从指定链中删除所有匹配的规则 |
| -D chain rulenum | --delete chain rulenum | 从指定链中删除指定编号的规则 |
| -I chain [rulenum] | --insert chain [rulenum] | 在指定链中插入一条规则 |
| -R chain rulenum | --replace chain rulenum | 替换指定链中指定编号的规则 |
| -L [chain [rulenum]] | --list [chain [rulenum]] | 列出指定链中的所有规则 |
| -S [chain [rulenum]] | --list-rules [chain [rulenum]] | 打印指定链中的所有规则 |
| -F [chain] | --flush [chain] | 删除指定链中的所有规则 |
| -Z [chain [rulenum]] | --zero [chain [rulenum]] | 将指定链中的所有计数器清零 |
| -N chain | --new chain | 创建一个新的自定义链 |
| -X [chain] | --delete-chain [chain] | 删除一个自定义链 |
| -P chain target | --policy chain target | 修改指定链的默认策略 |
| -E old-chain new-chain | --rename-chain old-chain new-chain | 修改自定义链的名称 |
| -p proto | --protocol proto | 指定匹配的协议 |
| -s address[/mask][...] | --source address[/mask][...] | 指定匹配的源地址 |
| -d address[/mask][...] | --destination address[/mask][...] | 指定匹配的目标地址 |
| -i input name[+] | --in-interface input name[+] | 指定匹配的输入接口 |
| -j target | --jump target | 指定规则的动作目标 |
| -g chain | --goto chain | 跳转到指定链中的某个规则 |
| -m match | --match match | 指定要使用的扩展模块 |
| -n | --numeric | 以数值形式输出地址和端口 |
| -o output name[+] | --out-interface output name[+] | 指定匹配的输出接口 |
| -t table | --table table | 指定要操作的表 |
| -v | --verbose | 输出详细信息 |
| -w [seconds] | --wait [seconds] | 等待获取 xtables 锁的最长时间 |
| -W [usecs] | --wait-interval [usecs] | 尝试获取 xtables 锁的时间间隔 |
| -x | --exact | 扩展数字（显示确切值） |
| -f | --fragment | 仅匹配第二个或更多个分片 |
| -V | --version | 打印软件版本号 |
| -h | 打印帮助信息 |
Filter 表
查看表
-n: 以数值形式展示信息，否则 0.0.0.0/0 将被展示成 anywhere
root@Perry-alis:~# iptables -t filter -L -n
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy DROP)
target prot opt source destination
DOCKER-USER all -- 0.0.0.0/0 0.0.0.0/0
DOCKER-ISOLATION-STAGE-1 all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
DOCKER all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
DOCKER all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain DOCKER (2 references)
target prot opt source destination
Chain DOCKER-ISOLATION-STAGE-1 (1 references)
target prot opt source destination
DOCKER-ISOLATION-STAGE-2 all -- 0.0.0.0/0 0.0.0.0/0
DOCKER-ISOLATION-STAGE-2 all -- 0.0.0.0/0 0.0.0.0/0
RETURN all -- 0.0.0.0/0 0.0.0.0/0
Chain DOCKER-ISOLATION-STAGE-2 (2 references)
target prot opt source destination
DROP all -- 0.0.0.0/0 0.0.0.0/0
DROP all -- 0.0.0.0/0 0.0.0.0/0
RETURN all -- 0.0.0.0/0 0.0.0.0/0
Chain DOCKER-USER (1 references)
target prot opt source destination
RETURN all -- 0.0.0.0/0 0.0.0.0/0
iptables -t filter -A INPUT -j DROP -p tcp -dport 80
iptables -t filter -D INPUT 1 # 删除 filter 中的第一条数据
iptables -t filter -A OUTPUT -j DROP -p tcp -d 192.168.x.x
#iptabnles -t filter
# -t 链(INPUT/OUTPUT/FORWARD)
# -A 添加
# -I 添加到第一条
# -D 删除
# -j 处理方式
# -s 源IP地址
# -d 目标IP地址
# -dport 端口