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I've noticed that the Sony Bravia TV is sending UDP packets to my IP and they are blocked by UFW (firewall):

Jan 09 16:56:09 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=523 TOS=0x00 PREC=0x00 TTL=64 ID=25556 DF PROTO=UDP SPT=45255 DPT=38598 LEN=503
Jan 09 16:57:48 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=01:00:5e:00:00:fb:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jan 09 16:58:07 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=523 TOS=0x00 PREC=0x00 TTL=64 ID=41863 DF PROTO=UDP SPT=42447 DPT=42397 LEN=503
Jan 09 16:58:08 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=305 TOS=0x00 PREC=0x00 TTL=64 ID=41921 DF PROTO=UDP SPT=54481 DPT=42397 LEN=285
Jan 09 16:58:08 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=523 TOS=0x00 PREC=0x00 TTL=64 ID=41959 DF PROTO=UDP SPT=55868 DPT=42397 LEN=503
Jan 09 16:58:09 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=305 TOS=0x00 PREC=0x00 TTL=64 ID=42032 DF PROTO=UDP SPT=54481 DPT=42397 LEN=285
Jan 09 16:59:50 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=01:00:5e:00:00:fb:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jan 09 17:00:07 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=523 TOS=0x00 PREC=0x00 TTL=64 ID=50549 DF PROTO=UDP SPT=56641 DPT=51192 LEN=503
Jan 09 17:00:07 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=305 TOS=0x00 PREC=0x00 TTL=64 ID=50558 DF PROTO=UDP SPT=54481 DPT=51192 LEN=285
Jan 09 17:00:08 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=523 TOS=0x00 PREC=0x00 TTL=64 ID=50658 DF PROTO=UDP SPT=54123 DPT=51192 LEN=503
Jan 09 17:00:08 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=305 TOS=0x00 PREC=0x00 TTL=64 ID=50706 DF PROTO=UDP SPT=54481 DPT=51192 LEN=285
Jan 09 17:01:56 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=01:00:5e:00:00:fb:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=224.0.0.251 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2
Jan 09 17:02:07 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=523 TOS=0x00 PREC=0x00 TTL=64 ID=6164 DF PROTO=UDP SPT=34981 DPT=58591 LEN=503
Jan 09 17:02:07 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=305 TOS=0x00 PREC=0x00 TTL=64 ID=6180 DF PROTO=UDP SPT=54481 DPT=58591 LEN=285
Jan 09 17:02:08 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=523 TOS=0x00 PREC=0x00 TTL=64 ID=6279 DF PROTO=UDP SPT=45242 DPT=58591 LEN=503
Jan 09 17:02:08 my_host kernel: [UFW BLOCK] IN=wlp58s0 OUT= MAC=4c:1d:96:8b:8a:44:e8:6f:38:30:94:eb:08:00 SRC=192.168.1.62 DST=192.168.1.51 LEN=305 TOS=0x00 PREC=0x00 TTL=64 ID=6314 DF PROTO=UDP SPT=54481 DPT=58591 LEN=285

Anyone know why it is sending these packets?

Giacomo1968
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klatls
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1 Answers1

2

It seems to be a Google Chromecast embedded in the TV:

....... SERVER: Linux/4.9.125, UPnP/1.0, Chromecast/1.6.18\x0d\x0aX-User-Agent: redsonic\x0d\x0aST: urn:dial-multiscreen-org .......
Giacomo1968
  • 58,727
klatls
  • 59