我从昨天开始尝试解决这个问题，但没有成功。我已经配置了pppoe、、、。端口dnsmasq转发不起作用。IPTables 规则如下所示。hostapdufw
我的iptables -vL输出：
root@media:/home/dost# iptables -vL
Chain INPUT (policy DROP 4 packets, 160 bytes)
pkts bytes target prot opt in out source destination
2079 218K ufw-before-logging-input all -- any any anywhere anywhere
2079 218K ufw-before-input all -- any any anywhere anywhere
361 103K ufw-after-input all -- any any anywhere anywhere
5 224 ufw-after-logging-input all -- any any anywhere anywhere
5 224 ufw-reject-input all -- any any anywhere anywhere
5 224 ufw-track-input all -- any any anywhere anywhere
Chain FORWARD (policy DROP 14 packets, 560 bytes)
pkts bytes target prot opt in out source destination
8237 4939K ufw-before-logging-forward all -- any any anywhere anywhere
8237 4939K ufw-before-forward all -- any any anywhere anywhere
524 28096 ufw-after-forward all -- any any anywhere anywhere
524 28096 ufw-after-logging-forward all -- any any anywhere anywhere
524 28096 ufw-reject-forward all -- any any anywhere anywhere
524 28096 ufw-track-forward all -- any any anywhere anywhere
508 27432 ACCEPT all -- wlp2s0 ppp0 192.168.0.0/24 anywhere ctstate NEW
0 0 ACCEPT all -- any any anywhere anywhere ctstate RELATED,ESTABLISHED
Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
1606 649K ufw-before-logging-output all -- any any anywhere anywhere
1606 649K ufw-before-output all -- any any anywhere anywhere
226 15220 ufw-after-output all -- any any anywhere anywhere
226 15220 ufw-after-logging-output all -- any any anywhere anywhere
226 15220 ufw-reject-output all -- any any anywhere anywhere
226 15220 ufw-track-output all -- any any anywhere anywhere
Chain ufw-after-forward (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-after-input (1 references)
pkts bytes target prot opt in out source destination
6 468 ufw-skip-to-policy-input udp -- any any anywhere anywhere udp dpt:netbios-ns
0 0 ufw-skip-to-policy-input udp -- any any anywhere anywhere udp dpt:netbios-dgm
0 0 ufw-skip-to-policy-input tcp -- any any anywhere anywhere tcp dpt:netbios-ssn
0 0 ufw-skip-to-policy-input tcp -- any any anywhere anywhere tcp dpt:microsoft-ds
0 0 ufw-skip-to-policy-input udp -- any any anywhere anywhere udp dpt:bootps
0 0 ufw-skip-to-policy-input udp -- any any anywhere anywhere udp dpt:bootpc
350 102K ufw-skip-to-policy-input all -- any any anywhere anywhere ADDRTYPE match dst-type BROADCAST
Chain ufw-after-logging-forward (1 references)
pkts bytes target prot opt in out source destination
27 1404 LOG all -- any any anywhere anywhere limit: avg 3/min burst 10 LOG level warning prefix "[UFW BLOCK] "
Chain ufw-after-logging-input (1 references)
pkts bytes target prot opt in out source destination
4 160 LOG all -- any any anywhere anywhere limit: avg 3/min burst 10 LOG level warning prefix "[UFW BLOCK] "
Chain ufw-after-logging-output (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-after-output (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-before-forward (1 references)
pkts bytes target prot opt in out source destination
7713 4911K ACCEPT all -- any any anywhere anywhere ctstate RELATED,ESTABLISHED
0 0 ACCEPT tcp -- ppp0 wlp2s0 anywhere anywhere tcp dpt:ssh
0 0 ACCEPT tcp -- ppp0 wlp2s0 anywhere anywhere tcp dpt:http
0 0 ACCEPT tcp -- ppp0 wlp2s0 anywhere anywhere tcp dpt:https
0 0 ACCEPT icmp -- any any anywhere anywhere icmp destination-unreachable
0 0 ACCEPT icmp -- any any anywhere anywhere icmp source-quench
0 0 ACCEPT icmp -- any any anywhere anywhere icmp time-exceeded
0 0 ACCEPT icmp -- any any anywhere anywhere icmp parameter-problem
0 0 ACCEPT icmp -- any any anywhere anywhere icmp echo-request
522 27992 ufw-user-forward all -- any any anywhere anywhere
Chain ufw-before-input (1 references)
pkts bytes target prot opt in out source destination
1 29 ACCEPT all -- lo any anywhere anywhere
1564 104K ACCEPT all -- any any anywhere anywhere ctstate RELATED,ESTABLISHED
0 0 ufw-logging-deny all -- any any anywhere anywhere ctstate INVALID
0 0 DROP all -- any any anywhere anywhere ctstate INVALID
0 0 ACCEPT icmp -- any any anywhere anywhere icmp destination-unreachable
0 0 ACCEPT icmp -- any any anywhere anywhere icmp source-quench
0 0 ACCEPT icmp -- any any anywhere anywhere icmp time-exceeded
0 0 ACCEPT icmp -- any any anywhere anywhere icmp parameter-problem
0 0 ACCEPT icmp -- any any anywhere anywhere icmp echo-request
0 0 ACCEPT udp -- any any anywhere anywhere udp spt:bootps dpt:bootpc
513 113K ufw-not-local all -- any any anywhere anywhere
4 1086 ACCEPT udp -- any any anywhere 224.0.0.251 udp dpt:mdns
0 0 ACCEPT udp -- any any anywhere 239.255.255.250 udp dpt:1900
509 112K ufw-user-input all -- any any anywhere anywhere
Chain ufw-before-logging-forward (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-before-logging-input (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-before-logging-output (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-before-output (1 references)
pkts bytes target prot opt in out source destination
1 29 ACCEPT all -- any lo anywhere anywhere
1379 634K ACCEPT all -- any any anywhere anywhere ctstate RELATED,ESTABLISHED
226 15220 ufw-user-output all -- any any anywhere anywhere
Chain ufw-logging-allow (0 references)
pkts bytes target prot opt in out source destination
0 0 LOG all -- any any anywhere anywhere limit: avg 3/min burst 10 LOG level warning prefix "[UFW ALLOW] "
Chain ufw-logging-deny (2 references)
pkts bytes target prot opt in out source destination
0 0 RETURN all -- any any anywhere anywhere ctstate INVALID limit: avg 3/min burst 10
0 0 LOG all -- any any anywhere anywhere limit: avg 3/min burst 10 LOG level warning prefix "[UFW BLOCK] "
Chain ufw-not-local (1 references)
pkts bytes target prot opt in out source destination
153 10071 RETURN all -- any any anywhere anywhere ADDRTYPE match dst-type LOCAL
4 1086 RETURN all -- any any anywhere anywhere ADDRTYPE match dst-type MULTICAST
356 102K RETURN all -- any any anywhere anywhere ADDRTYPE match dst-type BROADCAST
0 0 ufw-logging-deny all -- any any anywhere anywhere limit: avg 3/min burst 10
0 0 DROP all -- any any anywhere anywhere
Chain ufw-reject-forward (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-reject-input (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-reject-output (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-skip-to-policy-forward (0 references)
pkts bytes target prot opt in out source destination
0 0 DROP all -- any any anywhere anywhere
Chain ufw-skip-to-policy-input (7 references)
pkts bytes target prot opt in out source destination
356 102K DROP all -- any any anywhere anywhere
Chain ufw-skip-to-policy-output (0 references)
pkts bytes target prot opt in out source destination
0 0 ACCEPT all -- any any anywhere anywhere
Chain ufw-track-forward (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-track-input (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-track-output (1 references)
pkts bytes target prot opt in out source destination
2 224 ACCEPT tcp -- any any anywhere anywhere ctstate NEW
224 14996 ACCEPT udp -- any any anywhere anywhere ctstate NEW
Chain ufw-user-forward (1 references)
pkts bytes target prot opt in out source destination
Chain ufw-user-input (1 references)
pkts bytes target prot opt in out source destination
0 0 ACCEPT udp -- wlp2s0 any anywhere anywhere udp spt:bootpc dpt:bootps
0 0 ACCEPT tcp -- wlp2s0 any 192.168.0.0/24 anywhere tcp dpt:domain
149 9911 ACCEPT udp -- wlp2s0 any 192.168.0.0/24 anywhere udp dpt:domain
0 0 ACCEPT tcp -- any any anywhere anywhere tcp dpt:1111
0 0 ACCEPT tcp -- any any anywhere anywhere tcp dpt:ssh
0 0 ACCEPT tcp -- any any anywhere anywhere tcp dpt:http
0 0 ACCEPT tcp -- any any anywhere anywhere tcp dpt:https
Chain ufw-user-limit (0 references)
pkts bytes target prot opt in out source destination
0 0 LOG all -- any any anywhere anywhere limit: avg 3/min burst 5 LOG level warning prefix "[UFW LIMIT BLOCK] "
0 0 REJECT all -- any any anywhere anywhere reject-with icmp-port-unreachable
Chain ufw-user-limit-accept (0 references)
pkts bytes target prot opt in out source destination
0 0 ACCEPT all -- any any anywhere anywhere
Chain ufw-user-logging-forward (0 references)
pkts bytes target prot opt in out source destination
Chain ufw-user-logging-input (0 references)
pkts bytes target prot opt in out source destination
Chain ufw-user-logging-output (0 references)
pkts bytes target prot opt in out source destination
Chain ufw-user-output (1 references)
pkts bytes target prot opt in out source destination
我的before.rules台词：
root@media:/home/dost# cat /etc/ufw/before.rules
#
# rules.before
#
# Rules that should be run before the ufw command line added rules. Custom
# rules should be added to one of these chains:
# ufw-before-input
# ufw-before-output
# ufw-before-forward
#
# Don't delete these required lines, otherwise there will be errors
*filter
:ufw-before-input - [0:0]
:ufw-before-output - [0:0]
:ufw-before-forward - [0:0]
:ufw-not-local - [0:0]
# End required lines
# allow all on loopback
-A ufw-before-input -i lo -j ACCEPT
-A ufw-before-output -o lo -j ACCEPT
# quickly process packets for which we already have a connection
-A ufw-before-input -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-output -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-forward -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
-A ufw-before-forward -i ppp0 -o wlp2s0 -p tcp --dport 22 -j ACCEPT
-A ufw-before-forward -i ppp0 -o wlp2s0 -p tcp --dport 80 -j ACCEPT
-A ufw-before-forward -i ppp0 -o wlp2s0 -p tcp --dport 443 -j ACCEPT
# drop INVALID packets (logs these in loglevel medium and higher)
-A ufw-before-input -m conntrack --ctstate INVALID -j ufw-logging-deny
-A ufw-before-input -m conntrack --ctstate INVALID -j DROP
# ok icmp codes for INPUT
-A ufw-before-input -p icmp --icmp-type destination-unreachable -j ACCEPT
-A ufw-before-input -p icmp --icmp-type source-quench -j ACCEPT
-A ufw-before-input -p icmp --icmp-type time-exceeded -j ACCEPT
-A ufw-before-input -p icmp --icmp-type parameter-problem -j ACCEPT
-A ufw-before-input -p icmp --icmp-type echo-request -j ACCEPT
# ok icmp code for FORWARD
-A ufw-before-forward -p icmp --icmp-type destination-unreachable -j ACCEPT
-A ufw-before-forward -p icmp --icmp-type source-quench -j ACCEPT
-A ufw-before-forward -p icmp --icmp-type time-exceeded -j ACCEPT
-A ufw-before-forward -p icmp --icmp-type parameter-problem -j ACCEPT
-A ufw-before-forward -p icmp --icmp-type echo-request -j ACCEPT
# allow dhcp client to work
-A ufw-before-input -p udp --sport 67 --dport 68 -j ACCEPT
#
# ufw-not-local
#
-A ufw-before-input -j ufw-not-local
# if LOCAL, RETURN
-A ufw-not-local -m addrtype --dst-type LOCAL -j RETURN
# if MULTICAST, RETURN
-A ufw-not-local -m addrtype --dst-type MULTICAST -j RETURN
# if BROADCAST, RETURN
-A ufw-not-local -m addrtype --dst-type BROADCAST -j RETURN
# all other non-local packets are dropped
-A ufw-not-local -m limit --limit 3/min --limit-burst 10 -j ufw-logging-deny
-A ufw-not-local -j DROP
# allow MULTICAST mDNS for service discovery (be sure the MULTICAST line above
# is uncommented)
-A ufw-before-input -p udp -d 224.0.0.251 --dport 5353 -j ACCEPT
# allow MULTICAST UPnP for service discovery (be sure the MULTICAST line above
# is uncommented)
-A ufw-before-input -p udp -d 239.255.255.250 --dport 1900 -j ACCEPT
# don't delete the 'COMMIT' line or these rules won't be processed
COMMIT
*nat
:PREROUTING ACCEPT [0:0]
-A PREROUTING -p tcp --dport 1111 -i ppp0 -j DNAT --to-destination 192.168.0.34:22
-A PREROUTING -p tcp --dport 80 -i ppp0 -j DNAT --to-destination 192.168.0.3:80
-A PREROUTING -p tcp --dport 443 -i ppp0 -j DNAT --to-destination 192.168.0.3:443
COMMIT
我的after.rules文件：
root@media:/home/dost# cat /etc/ufw/after.rules
#
# rules.input-after
#
# Rules that should be run after the ufw command line added rules. Custom
# rules should be added to one of these chains:
# ufw-after-input
# ufw-after-output
# ufw-after-forward
#
# Don't delete these required lines, otherwise there will be errors
*filter
:ufw-after-input - [0:0]
:ufw-after-output - [0:0]
:ufw-after-forward - [0:0]
# End required lines
# don't log noisy services by default
-A ufw-after-input -p udp --dport 137 -j ufw-skip-to-policy-input
-A ufw-after-input -p udp --dport 138 -j ufw-skip-to-policy-input
-A ufw-after-input -p tcp --dport 139 -j ufw-skip-to-policy-input
-A ufw-after-input -p tcp --dport 445 -j ufw-skip-to-policy-input
-A ufw-after-input -p udp --dport 67 -j ufw-skip-to-policy-input
-A ufw-after-input -p udp --dport 68 -j ufw-skip-to-policy-input
# don't log noisy broadcast
-A ufw-after-input -m addrtype --dst-type BROADCAST -j ufw-skip-to-policy-input
-A FORWARD -o ppp0 -i wlp2s0 -s 192.168.0.0/24 -m conntrack --ctstate NEW -j ACCEPT
-A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
# don't delete the 'COMMIT' line or these rules won't be processed
COMMIT
# Enable NAT
*nat
:POSTROUTING ACCEPT [0:0]
# Forward traffic through eth0 - Change to match you out-interface
-A POSTROUTING -s 192.168.0.0/24 -o ppp0 -j MASQUERADE
COMMIT
ufw status输出：
root@media:/home/dost# ufw status
Status: active
To Action From
-- ------ ----
67/udp on wlp2s0 ALLOW 68/udp
53 on wlp2s0 ALLOW 192.168.0.0/24
1111/tcp ALLOW Anywhere
22/tcp ALLOW Anywhere
80/tcp ALLOW Anywhere
443/tcp ALLOW Anywhere
67/udp (v6) on wlp2s0 ALLOW 68/udp (v6)
1111/tcp (v6) ALLOW Anywhere (v6)
22/tcp (v6) ALLOW Anywhere (v6)
80/tcp (v6) ALLOW Anywhere (v6)
443/tcp (v6) ALLOW Anywhere (v6)
ip a输出：
root@media:/home/dost# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether d0:50:99:94:0a:ed brd ff:ff:ff:ff:ff:ff
inet6 fe80::d250:99ff:fe94:aed/64 scope link
valid_lft forever preferred_lft forever
3: wlp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether ac:fd:ce:32:b2:5c brd ff:ff:ff:ff:ff:ff
inet 192.168.0.254/24 brd 192.168.0.255 scope global wlp2s0
valid_lft forever preferred_lft forever
inet6 fe80::aefd:ceff:fe32:b25c/64 scope link
valid_lft forever preferred_lft forever
4: enp3s0.35@enp3s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether d0:50:99:94:0a:ed brd ff:ff:ff:ff:ff:ff
inet6 fe80::d250:99ff:fe94:aed/64 scope link
valid_lft forever preferred_lft forever
5: ppp0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1492 qdisc pfifo_fast state UNKNOWN group default qlen 3
link/ppp
inet 176.40.2.185 peer 92.45.0.162/32 scope global ppp0
valid_lft forever preferred_lft forever
我是 IPTables 新手。您能帮我找出问题所在吗？提前致谢。
答案1
找到问题了。我不知道这是否是一个错误，但是当你使用-i选项时PREROUTING它不起作用。