查看raw mangle nat filter 其中的某张表的链的信息
例如查看表filter中INPUT链的规则
[root@localhost ~]# iptables -t filter -L INPUT
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere
INPUT_direct all -- anywhere anywhere
INPUT_ZONES_SOURCE all -- anywhere anywhere
INPUT_ZONES all -- anywhere anywhere
DROP all -- anywhere anywhere ctstate INVALID
REJECT all -- anywhere anywhere reject-with icmp-host-prohibited 查看其他表规则的命令
iptables -t raw -L
iptables -t mangle -L
iptables -t nat -L查看某个具体的链的信息
iptables -t filter -L INPUT
iptables -t filter -L OUTPUT
iptables -t filter -L PREROUTING
iptables -t filter -L POSTROUTING
iptables -t filter -L FORWARD加上-v参数
[root@localhost ~]# iptables -t filter -vL INPUT
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
205 20451 ACCEPT all -- any any anywhere anywhere ctstate RELATED,ESTABLISHED
0 0 ACCEPT all -- lo any anywhere anywhere
3 551 INPUT_direct all -- any any anywhere anywhere
3 551 INPUT_ZONES_SOURCE all -- any any anywhere anywhere
3 551 INPUT_ZONES all -- any any anywhere anywhere
0 0 DROP all -- any any anywhere anywhere ctstate INVALID
2 487 REJECT all -- any any anywhere anywhere reject-with icmp-host-prohibited报文字段的含义
pkts --报文规则的个数
bytes --报文包的总和大小
target --执行的动作
prot --协议
opt --规则选项
in --网卡(入口)
out --网卡(流出)
source --源地址
destination --目标地址加上-n参数
[root@localhost ~]# iptables -t filter -nvL INPUT --line
Chain INPUT (policy ACCEPT 0 packets, 0 bytes) //默认略
num pkts bytes target prot opt in out source destination
1 296 27091 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED
2 0 0 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0
3 9 1474 INPUT_direct all -- * * 0.0.0.0/0 0.0.0.0/0
4 9 1474 INPUT_ZONES_SOURCE all -- * * 0.0.0.0/0 0.0.0.0/0
5 9 1474 INPUT_ZONES all -- * * 0.0.0.0/0 0.0.0.0/0
6 0 0 DROP all -- * * 0.0.0.0/0 0.0.0.0/0 ctstate INVALID
7 8 1410 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited最后，要学会使用help来查看详细描述
[root@fabric-cli ~]# iptables --help
iptables v1.4.21
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.参考:
操作以及规则查找