[GH-ISSUE #278] connection to canadian servers #244

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opened 2026-02-26 06:31:43 +03:00 by kerem · 2 comments
Owner

Originally created by @xMasterChiefx on GitHub (Jan 22, 2020).
Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/278

My Docker nginx-reverse-proxy-manager tries to connect connect to some canadian servers
209.171.88.201 over port 1880 - what is that?

15:11:35 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:38301, len 44 15:11:36 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:39938, len 44 15:11:36 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:44594, len 44 15:11:37 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:16054, len 44 15:11:38 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:43602, len 44 15:11:38 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:64786, len 44 15:11:40 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:53756, len 44 15:11:42 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:21580, len 44 15:11:42 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:31125, len 44 15:11:43 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:31091, len 44 15:11:44 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:39938, len 44 15:11:46 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:43602, len 44 15:11:56 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:53756, len 44 15:11:58 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:21580, len 44 15:11:58 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:31125, len 44 15:11:59 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:31091, len 44 15:12:00 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:39938, len 44 15:12:01 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:50328, len 44 15:12:02 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:45262, len 44 15:12:03 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:43602, len 44 15:12:03 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:15967, len 44 15:12:04 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:41345, len 44 15:12:06 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:32356, len 44 15:12:06 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:6699, len 44 15:12:09 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:50328, len 44 15:12:11 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:45262, len 44 15:12:11 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:15967, len 44 15:12:12 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:41345, len 44 15:12:14 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:6699, len 44 15:12:14 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:32356, len 44

Originally created by @xMasterChiefx on GitHub (Jan 22, 2020). Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/278 My Docker nginx-reverse-proxy-manager tries to connect connect to some canadian servers `209.171.88.201` over port `1880` - what is that? `15:11:35 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:38301, len 44 15:11:36 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:39938, len 44 15:11:36 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:44594, len 44 15:11:37 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:16054, len 44 15:11:38 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:43602, len 44 15:11:38 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:64786, len 44 15:11:40 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:53756, len 44 15:11:42 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:21580, len 44 15:11:42 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:31125, len 44 15:11:43 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:31091, len 44 15:11:44 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:39938, len 44 15:11:46 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:43602, len 44 15:11:56 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:53756, len 44 15:11:58 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:21580, len 44 15:11:58 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:31125, len 44 15:11:59 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:31091, len 44 15:12:00 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:39938, len 44 15:12:01 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:50328, len 44 15:12:02 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:45262, len 44 15:12:03 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:43602, len 44 15:12:03 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:15967, len 44 15:12:04 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:41345, len 44 15:12:06 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:32356, len 44 15:12:06 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:6699, len 44 15:12:09 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:50328, len 44 15:12:11 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:45262, len 44 15:12:11 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:15967, len 44 15:12:12 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:41345, len 44 15:12:14 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:6699, len 44 15:12:14 firewall,info d_invalid-F: forward: in:bridge out:ether1, src-mac internal.mac.address, proto TCP (SYN,ACK), internal.ip.address:1880->209.171.88.201:32356, len 44`
kerem 2026-02-26 06:31:43 +03:00
  • closed this issue
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Author
Owner

@jc21 commented on GitHub (Jan 22, 2020):

Upon start this app connects to cloud fare and AWS to get a list of cdn ip addresses but what you’re seeing doesn’t look like that.

<!-- gh-comment-id:577396117 --> @jc21 commented on GitHub (Jan 22, 2020): Upon start this app connects to cloud fare and AWS to get a list of cdn ip addresses but what you’re seeing doesn’t look like that.
Author
Owner

@jc21 commented on GitHub (Jan 22, 2020):

See:
https://github.com/jc21/nginx-proxy-manager/blob/master/src/backend/internal/ip_ranges.js
for a list of the URLs that are hit.

<!-- gh-comment-id:577421189 --> @jc21 commented on GitHub (Jan 22, 2020): See: https://github.com/jc21/nginx-proxy-manager/blob/master/src/backend/internal/ip_ranges.js for a list of the URLs that are hit.
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starred/nginx-proxy-manager-NginxProxyManager#244
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