Ufw

無法獲取 ufw 規則以允許 pc 和立體聲之間的 dlna/upnp 流量

  • May 23, 2019

我正在使用 pulseaudio-dlna+pavucontrol 將我的筆記型電腦 (192.168.2.159) 的聲音輸出定向到我的 yamaha 立體聲音響 (192.168.2.160) 這僅在我禁用 ufw 時有效sudo ufw disable

我很難找到正確的規則來允許特定的流量。

sudo tail -f /var/log/ufw.log

顯示塊消息,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

如您所見,我已經添加了各種規則,但沒有達到預期的效果,當我找到正確的配置時,我想再次刪除:

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

我能夠找到正確的規則。該應用程序iftop可以方便地查看哪些埠和地址可以看到流量。

ufw disable
# Now start playback and watch the traffic with:
iftop -i wlo1 -N -n -P

這些規則使我可以進行 ufw 活動和立體聲播放:

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

引用自:https://unix.stackexchange.com/questions/513696