我无法拒绝对特定 IP 地址或特定 IP 地址范围的访问。我的网络环境是，我有一个路由器，其 IP 为 (30.30.10.1)，第二个热点已刷新到 DD-WRT，其 IP 为 (192.168.15.1)。我需要拒绝热点用户访问我的主路由器，其 IP 为 30.30.10.1 或整个 IP 范围。我在防火墙规则中保存的命令如下所列。
iptables -I FORWARD -d 30.30.10.1 -j DROP
iptables -I FORWARD -s 30.30.10.0/24 -j DROP
在防火墙中放入此 Iptables 规则后，我仍然能够登录 30.30.10.1 webgui 界面。规则有什么问题？
这是iptables -L输出。
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
1751 129K ACCEPT 0 -- tun1 any anywhere anywhere
0 0 ACCEPT 0 -- tun0 any anywhere anywhere
1 84 ACCEPT 0 -- tun1 any anywhere anywhere
4085 444K ACCEPT 0 -- any any anywhere anywhere state RELATED,ESTABLISHED
0 0 DROP udp -- vlan2 any anywhere anywhere udp dpt:route
0 0 DROP udp -- br0 any anywhere anywhere udp dpt:route
0 0 ACCEPT udp -- any any anywhere anywhere udp dpt:route
0 0 DROP icmp -- vlan2 any anywhere anywhere
0 0 DROP igmp -- any any anywhere anywhere
0 0 ACCEPT 0 -- lo any anywhere anywhere state NEW
0 0 ACCEPT 0 -- br0 any anywhere anywhere state NEW
344 49804 DROP 0 -- any any anywhere anywhere
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
0 0 ACCEPT 0 -- any tun1 anywhere anywhere
0 0 ACCEPT 0 -- tun1 any anywhere anywhere
0 0 ACCEPT 0 -- any tun0 anywhere anywhere
0 0 ACCEPT 0 -- tun0 any anywhere anywhere
0 0 ACCEPT 0 -- any tun1 anywhere anywhere
0 0 ACCEPT 0 -- tun1 any anywhere anywhere
0 0 DROP 0 -- any any 192.168.182.0/24 30.30.15.0/24
0 0 DROP 0 -- any any 192.168.182.0/24 30.30.15.0/24
0 0 ACCEPT gre -- any vlan2 192.168.20.0/24 anywhere
0 0 ACCEPT tcp -- any vlan2 192.168.20.0/24 anywhere tcp dpt:1723
0 0 lan2wan 0 -- any any anywhere anywhere
0 0 TCPMSS tcp -- any any anywhere anywhere tcp flags:SYN,RST/SYN TCPMSS clamp to PMTU
0 0 ACCEPT 0 -- any any anywhere anywhere state RELATED,ESTABLISHED
0 0 ACCEPT 0 -- br0 br0 anywhere anywhere
0 0 TRIGGER 0 -- vlan2 br0 anywhere anywhere TRIGGER type:in match:0 relate:0
0 0 trigger_out 0 -- br0 any anywhere anywhere
0 0 ACCEPT 0 -- br0 any anywhere anywhere state NEW
0 0 DROP 0 -- any any anywhere anywhere
Chain OUTPUT (policy ACCEPT 7319 packets, 3919K bytes)
pkts bytes target prot opt in out source destination
Chain advgrp_1 (0 references)
pkts bytes target prot opt in out source destination
Chain advgrp_10 (0 references)
pkts bytes target prot opt in out source destination
Chain advgrp_2 (0 references)
pkts bytes target prot opt in out source destination
Chain advgrp_3 (0 references)
pkts bytes target prot opt in out source destination
Chain advgrp_4 (0 references)
pkts bytes target prot opt in out source destination
Chain advgrp_5 (0 references)
pkts bytes target prot opt in out source destination
Chain advgrp_6 (0 references)
pkts bytes target prot opt in out source destination
Chain advgrp_7 (0 references)
pkts bytes target prot opt in out source destination
Chain advgrp_8 (0 references)
pkts bytes target prot opt in out source destination
Chain advgrp_9 (0 references)
pkts bytes target prot opt in out source destination
Chain grp_1 (1 references)
pkts bytes target prot opt in out source destination
Chain grp_10 (0 references)
pkts bytes target prot opt in out source destination
Chain grp_2 (0 references)
pkts bytes target prot opt in out source destination
Chain grp_3 (0 references)
pkts bytes target prot opt in out source destination
Chain grp_4 (0 references)
pkts bytes target prot opt in out source destination
Chain grp_5 (0 references)
pkts bytes target prot opt in out source destination
Chain grp_6 (0 references)
pkts bytes target prot opt in out source destination
Chain grp_7 (0 references)
pkts bytes target prot opt in out source destination
Chain grp_8 (0 references)
pkts bytes target prot opt in out source destination
Chain grp_9 (0 references)
pkts bytes target prot opt in out source destination
Chain lan2wan (1 references)
pkts bytes target prot opt in out source destination
0 0 grp_1 0 -- any any anywhere anywhere
Chain logaccept (0 references)
pkts bytes target prot opt in out source destination
0 0 ACCEPT 0 -- any any anywhere anywhere
Chain logdrop (0 references)
pkts bytes target prot opt in out source destination
0 0 DROP 0 -- any any anywhere anywhere
Chain logreject (0 references)
pkts bytes target prot opt in out source destination
0 0 REJECT tcp -- any any anywhere anywhere reject-with tcp-reset
Chain trigger_out (1 references)
pkts bytes target prot opt in out source destination
这是route -n输出
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 30.30.15.1 0.0.0.0 UG 0 0 0 vlan2
30.30.15.0 0.0.0.0 255.255.255.0 U 0 0 0 vlan2
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 br0
172.16.1.1 172.16.1.46 255.255.255.255 UGH 0 0 0 tun1
172.16.1.46 0.0.0.0 255.255.255.255 UH 0 0 0 tun1
172.16.254.0 172.16.1.46 255.255.255.0 UG 0 0 0 tun1
192.168.20.0 0.0.0.0 255.255.255.0 U 0 0 0 br0
192.168.87.0 172.16.1.46 255.255.255.0 UG 0 0 0 tun1
192.168.182.0 0.0.0.0 255.255.255.0 U 0 0 0 tun0
答案1
我知道这个问题已经存在几个月了，你可能已经找到了解决方案，但我还是想给你一个答案。请记住，FORWARD 规则适用于通过的流量通过路由器，而不是路由器本身。要拒绝到路由器的流量，您需要创建一个 INPUT 规则，指定要丢弃的源网络：
iptables -I INPUT -m iprange --src-range 192.168.15.1-192.168.15.254 -j DROP