Debian 12中iptables排错方法 - 全文内容：
显示技术博客列表Debian 12中iptables排错方法
超短链接标记流量，然后显示指定流量是走什么网络出去：
root@vps:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 1b87021fe9f4 haroldli/xiaoya-tvbox:latest "/entrypoint.sh 81 -…" 5 hours ago Up 28 seconds 0.0.0.0:4567->4567/tcp, [::]:4567->4567/tcp, 5244-5245/tcp, 0.0.0.0:5344->80/tcp, [::]:5344->80/tcp xiaoya-tvbox a5d578f4f678 taksss/php-epg:latest "/docker-entrypoint.…" 13 hours ago Up 28 seconds 443/tcp, 0.0.0.0:5678->80/tcp, [::]:5678->80/tcp php-epg 1d1ae6c5d96e containrrr/watchtower "/watchtower -c --sc…" 2 weeks ago Restarting (1) 5 seconds ago watchtower root@vps:~# # 在 INPUT 链最前面插入 LOG 规则 iptables -I INPUT 1 -s 192.168.192.0/24 -p tcp --dport 4567 -j LOG --log-prefix "INPUT-4567: " --log-level 4 # 在 FORWARD 链最前面插入 LOG 规则 iptables -I FORWARD 1 -s 192.168.192.0/24 -p tcp --dport 4567 -j LOG --log-prefix "FORWARD-4567: " --log-level 4 # 在 DOCKER-USER 链插入 LOG 规则 iptables -I DOCKER-USER 1 -s 192.168.192.0/24 -p tcp --dport 4567 -j LOG --log-prefix "DOCKER-USER-4567: " --log-level 4 # 显示实时日志 journalctl -kf | grep "4567" Apr 24 08:31:08 vps kernel: FORWARD-4567: IN=ztbto72xxn OUT=CloudflareWARP MAC=9e:6a:e9:6b:d3:b5:9e:17:51:48:d4:bd:08:00 SRC=192.168.192.7 DST=172.17.0.3 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=30392 DF PROTO=TCP SPT=36950 DPT=4567 WINDOW=63480 RES=0x00 SYN URGP=0 MARK=0x200 Apr 24 08:31:08 vps kernel: DOCKER-USER-4567: IN=ztbto72xxn OUT=CloudflareWARP MAC=9e:6a:e9:6b:d3:b5:9e:17:51:48:d4:bd:08:00 SRC=192.168.192.7 DST=172.17.0.3 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=30392 DF PROTO=TCP SPT=36950 DPT=4567 WINDOW=63480 RES=0x00 SYN URGP=0 MARK=0x200 Apr 24 08:31:09 vps kernel: FORWARD-4567: IN=ztbto72xxn OUT=CloudflareWARP MAC=9e:6a:e9:6b:d3:b5:9e:17:51:48:d4:bd:08:00 SRC=192.168.192.7 DST=172.17.0.3 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=30393 DF PROTO=TCP SPT=36950 DPT=4567 WINDOW=63480 RES=0x00 SYN URGP=0 MARK=0x200 Apr 24 08:31:09 vps kernel: DOCKER-USER-4567: IN=ztbto72xxn OUT=CloudflareWARP MAC=9e:6a:e9:6b:d3:b5:9e:17:51:48:d4:bd:08:00 SRC=192.168.192.7 DST=172.17.0.3 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=30393 DF PROTO=TCP SPT=36950 DPT=4567 WINDOW=63480 RES=0x00 SYN URGP=0 MARK=0x200 Apr 24 08:31:12 vps kernel: FORWARD-4567: IN=ztbto72xxn OUT=CloudflareWARP MAC=9e:6a:e9:6b:d3:b5:9e:17:51:48:d4:bd:08:00 SRC=192.168.192.7 DST=172.17.0.3 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=30394 DF PROTO=TCP SPT=36950 DPT=4567 WINDOW=63480 RES=0x00 SYN URGP=0 MARK=0x200 Apr 24 08:31:12 vps kernel: DOCKER-USER-4567: IN=ztbto72xxn OUT=CloudflareWARP MAC=9e:6a:e9:6b:d3:b5:9e:17:51:48:d4:bd:08:00 SRC=192.168.192.7 DST=172.17.0.3 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=30394 DF PROTO=TCP SPT=36950 DPT=4567 WINDOW=63480 RES=0x00 SYN URGP=0 MARK=0x200 Apr 24 08:31:15 vps kernel: FORWARD-4567: IN=ztbto72xxn OUT=CloudflareWARP MAC=9e:6a:e9:6b:d3:b5:9e:17:51:48:d4:bd:08:00 SRC=192.168.192.7 DST=172.17.0.3 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=30395 DF PROTO=TCP SPT=36950 DPT=4567 WINDOW=63480 RES=0x00 SYN URGP=0 MARK=0x200 Apr 24 08:31:15 vps kernel: DOCKER-USER-4567: IN=ztbto72xxn OUT=CloudflareWARP MAC=9e:6a:e9:6b:d3:b5:9e:17:51:48:d4:bd:08:00 SRC=192.168.192.7 DST=172.17.0.3 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=30395 DF PROTO=TCP SPT=36950 DPT=4567 WINDOW=63480 RES=0x00 SYN URGP=0 MARK=0x200 Apr 24 08:31:23 vps kernel: FORWARD-4567: IN=ztbto72xxn OUT=CloudflareWARP MAC=9e:6a:e9:6b:d3:b5:9e:17:51:48:d4:bd:08:00 SRC=192.168.192.7 DST=172.17.0.3 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=30396 DF PROTO=TCP SPT=36950 DPT=4567 WINDOW=63480 RES=0x00 SYN URGP=0 MARK=0x200 Apr 24 08:31:23 vps kernel: DOCKER-USER-4567: IN=ztbto72xxn OUT=CloudflareWARP MAC=9e:6a:e9:6b:d3:b5:9e:17:51:48:d4:bd:08:00 SRC=192.168.192.7 DST=172.17.0.3 LEN=52 TOS=0x00 PREC=0x00 TTL=127 ID=30396 DF PROTO=TCP SPT=36950 DPT=4567 WINDOW=63480 RES=0x00 SYN URGP=0 MARK=0x200
再举一反三：
# 在 INPUT 链最前面插入 LOG 规则 iptables -I INPUT 1 -s 192.168.192.0/24 -j LOG --log-prefix "INPUT-19201: " --log-level 4 # 在 FORWARD 链最前面插入 LOG 规则 iptables -I FORWARD 1 -s 192.168.192.0/24 -j LOG --log-prefix "FORWARD-19201: " --log-level 4 # 在 DOCKER-USER 链插入 LOG 规则 iptables -I DOCKER-USER 1 -s 192.168.192.0/24 -j LOG --log-prefix "DOCKER-USER-19201: " --log-level 4 # 显示实时日志 journalctl -kf | grep "19201"