我正在使用pulseaudio-dlna+pavucontrol将声音输出从我的笔记本电脑（192.168.2.159）定向到我的雅马哈立体声音响（192.168.2.160）这仅在我禁用ufw时有效sudo ufw disable
我很难找到允许特定流量的正确规则。
sudo tail -f /var/log/ufw.log
显示块消息，例如：
Apr 21 20:40:50 foo kernel: [ 5349.911161] [UFW BLOCK] IN=wlo1 OUT= MAC=01:00:5e:7f:ff:ff:ff:ff:ff:65:c3:04:08:00 SRC=192.168.2.160 DST=239.255.255.250 LEN=204 TOS=0x00 PREC=0x00 TTL=1 ID=0 DF PROTO=UDP SPT=40760 DPT=51200 LEN=184
正如你所看到的，我已经添加了各种规则，但没有达到预期的效果，当我找到正确的配置时，我想再次删除它们：
sudo ufw status verbose
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing), disabled (routed)
New profiles: skip
To Action From
-- ------ ----
22/tcp ALLOW IN 192.168.2.0/24
80/tcp ALLOW IN 192.168.2.0/24
80/udp ALLOW IN 192.168.2.0/24
1900/udp ALLOW IN 192.168.2.0/24
1900/udp ALLOW IN 239.255.255.0/24
1900/udp ALLOW IN Anywhere
3689 ALLOW IN Anywhere
1901/udp ALLOW IN 192.168.0.0/24 1900/udp
51200/udp ALLOW IN 192.168.0.0/24 40760/udp
8080/udp ALLOW IN 192.168.0.0/24 40760/udp
40760/udp ALLOW IN 192.168.0.0/24 51200/udp
51200/udp ALLOW IN 239.255.255.0/24 40760/udp
8080/tcp ALLOW IN 192.168.2.0/24 3393/tcp
40760/udp ALLOW IN 239.255.255.0/24 51200/udp
1900/udp (v6) ALLOW IN Anywhere (v6)
3689 (v6) ALLOW IN Anywhere (v6)
40760/udp ALLOW OUT 239.255.255.0/24 51200/udp
51200/udp ALLOW OUT 239.255.255.0/24 40760/udp
答案1
我能够找到正确的规则。该应用程序iftop可以方便地查看哪些端口和地址有流量。
ufw disable
# Now start playback and watch the traffic with:
iftop -i wlo1 -N -n -P
这些规则允许我进行 ufw 活动和立体声播放：
ufw allow proto udp from 192.168.2.0/24 to any port 8080
ufw allow proto udp from 192.168.0.0/24 port 1900 to any port 1901
ufw enable