SYN_RECV not answered for open ports

[GottZ]

Hello there.
the xxx.xxx.34.100 ip there is my public ip trying to probe said port.

the xxx.xxx.xxx.102 ip there is my openvpn public ip with enabled port forwarding.

now judging from the fact that my SYN calls go through.. how comes there are no ACK responses from rtorrent?

port range is definitely correct


but still showing that it's unconnectable.

any idea how this is possible?
be it VPN_INPORT_PORTS or ADDITIONAL_PORTS (deprecated, I know..) no change.
when setting them through VPN_OUTPUT_PORTS nothing works either.

rtorrent  | 2023-02-03 15:46:53.559983 [info] System information Linux a4ebd2e4a48b 6.1.8-arch1-1 #1 SMP PREEMPT_DYNAMIC Tue, 24 Jan 2023 21:07:04 +0000 x86_64 GNU/Linux
rtorrent  | 2023-02-03 15:46:53.594395 [info] OS_ARCH defined as 'x86-64'
rtorrent  | 2023-02-03 15:46:53.637132 [info] PUID defined as '1001'
rtorrent  | 2023-02-03 15:46:53.699365 [info] PGID defined as '1003'
rtorrent  | 2023-02-03 15:46:53.770350 [info] UMASK defined as '0000'
rtorrent  | 2023-02-03 15:46:53.809192 [info] Permissions already set for '/config'
rtorrent  | 2023-02-03 15:46:53.850375 [info] Deleting files in /tmp (non recursive)...
rtorrent  | 2023-02-03 15:46:53.902195 [info] VPN_ENABLED defined as 'yes'
rtorrent  | 2023-02-03 15:46:53.945266 [info] VPN_CLIENT defined as 'openvpn'
rtorrent  | 2023-02-03 15:46:53.986431 [info] VPN_PROV defined as 'custom'
rtorrent  | 2023-02-03 15:46:54.034565 [info] OpenVPN config file (ovpn extension) is located at /config/openvpn/46.ovpn
rtorrent  | 2023-02-03 15:46:54.116139 [info] VPN remote server(s) defined as 'xxx.xxx.xxx.102,'
rtorrent  | 2023-02-03 15:46:54.150730 [info] VPN remote port(s) defined as '501,'
rtorrent  | 2023-02-03 15:46:54.181414 [info] VPN remote protcol(s) defined as 'udp,'
rtorrent  | 2023-02-03 15:46:54.221655 [info] VPN_DEVICE_TYPE defined as 'tun0'
rtorrent  | 2023-02-03 15:46:54.263192 [info] VPN_OPTIONS not defined (via -e VPN_OPTIONS)
rtorrent  | 2023-02-03 15:46:54.317997 [info] LAN_NETWORK defined as '10.13.37.0/24'
rtorrent  | 2023-02-03 15:46:54.358132 [info] NAME_SERVERS defined as '9.9.9.9,1.1.1.1'
rtorrent  | 2023-02-03 15:46:54.411121 [info] VPN_USER defined as 'xxxxxxxxxxxxxxxxxxxxx'
rtorrent  | 2023-02-03 15:46:54.451653 [info] VPN_PASS defined as 'xxxxxxxxxxxxxxxxxxxxx'
rtorrent  | 2023-02-03 15:46:54.487734 [info] ENABLE_PRIVOXY defined as 'yes'
ignore the following line. I've moved back and forth between several config attempts:
rtorrent  | 2023-02-03 15:46:54.534126 [warn] ADDITIONAL_PORTS DEPRECATED, please rename env var to 'VPN_INPUT_PORTS'
rtorrent  | 2023-02-03 15:46:54.569024 [info] ADDITIONAL_PORTS defined as 'xxx32,xxx33,xxx34'
rtorrent  | 2023-02-03 15:46:54.609208 [info] VPN_OUTPUT_PORTS not defined (via -e VPN_OUTPUT_PORTS), skipping allow for custom outgoing ports
rtorrent  | 2023-02-03 15:46:54.668613 [info] ENABLE_AUTODL_IRSSI defined as 'yes'
rtorrent  | 2023-02-03 15:46:54.710064 [info] ENABLE_RPC2 defined as 'yes'
rtorrent  | 2023-02-03 15:46:54.750009 [info] ENABLE_RPC2_AUTH defined as 'no'
rtorrent  | 2023-02-03 15:46:54.808277 [warn] ENABLE_WEBUI_AUTH not defined (via -e ENABLE_WEBUI_AUTH), defaulting to 'yes'
rtorrent  | 2023-02-03 15:46:54.848230 [warn] WEBUI_USER not defined (via -e WEBUI_USER), defaulting to 'admin'
ignore the following line too. my reverse proxy takes care of secure auth:
rtorrent  | 2023-02-03 15:46:54.887681 [warn] WEBUI_PASS defined as 'rutorrent' is weak, please consider using a stronger password
rtorrent  | 2023-02-03 15:46:55.069834 [info] Starting Supervisor...