[2.x] Unable to connect to Influx from a certain IP

[SpiralCut]

Hi, I'm having trouble accessing InfluxDB 2.7.5 from a certain IP address on another subnet. I'm running influx on a windows PC within a docker container inside of WSL, and I was previously successfully able to send data via telegraf from a sever at 192.168.3.3 to the influx PC 192.168.1.4 in the past. Then I had some hardware issues on the PC (which are now fixed) but after several crashes of the PC server I can no longer connect from 192.168.3.3 though connecting from other computers on the 192.168.1.X and 192.168.4.X subnets to the influx PC is fine.

Steps to reproduce: List the minimal actions needed to reproduce the behaviour.

1. .Telnet from the 192.168.3.3 server to the Influx DB server at 192.168.1.4

Expected behaviour: I should see a connection handshake with the 192.168.1.4 server

Actual behaviour: Describe What actually happened. There will be no reaction from the InfluxDB server (I see the same result when i run telegraf but telnet makes it clearer that it isn't a telegraf config issue)

I'm finding it trouble to provide meaningful logs but so far what I've tried

1. Checking my router/network firewall etc. Verified that the 192.168.3.3 server is making it through the firewall and if I change the port I try to telnet to I can successfully telnet into other services on the windows server (though I can't telnet into Influx if I change the influx port and then try connecting to that)

2. Tried telneting from another computer on a different subnet (192.168.4.X) and from that computer I was able to connect to influx though still not from 192.168.3.3

3. Checked the windows computer. Tried re-adding firewall rules for influx (in this case on port 8087) and disabling the firewall altogether but I'm still not able to connect from 192.168.3.3 (still can connect from other IPs though)

4. Viewed the connection in Wireshark on the windows PC. I see the 192.168.3.3 server try to connect in the logs but it isn't making the connection and gives up after retrying a few times

Here's the first message from Wireshark as received from 192.168.1.4 151240 7.428888 192.168.3.3 192.168.1.4 TCP 74 35026 → 8087 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 SACK_PERM TSval=7325947 TSecr=0 WS=128 5) Because of this, it seems to be exclusively an issue between this IP (192.168.3.3 and influx on the windows server)

Environment info: 192.168.1.4 Influx DB 2.7.5 running on WSL2 (Ubuntu 22.04 LTS) in a Docker Container. WSL is hosted in Windows 11

InfluxDB Docker Compose Script

  influxdb:
    image: influxdb:latest
    container_name: influxdb
    restart: unless-stopped
    ports:
      - 8087:8086
    networks:
      - t2_proxy
    environment:
      - INFLUXD_STORAGE_CACHE_SNAPSHOT_MEMORY_SIZE=104857600
#      - INFLUXD_LOG_LEVEL=debug
      - INFLUXDB_MONITOR_STORE_ENABLED=false

Config: Copy any non-default config values here or attach the full config as a gist or file.

["influx.conf"]
  url = "https://influx.MYDOMAIN.com"
  token = ""
  org = ""
# 
# [eu-central]
#   url = "https://eu-central-1-1.aws.cloud2.influxdata.com"
#   token = "XXX"
#   org = ""
# 
# [us-central]
#   url = "https://us-central1-1.gcp.cloud2.influxdata.com"
#   token = "XXX"
#   org = ""
# 
# [us-west]
#   url = "https://us-west-2-1.aws.cloud2.influxdata.com"
#   token = "XXX"
#   org = ""