# Flint 2 Not Port-Forwarding

**URL:** <https://forum.gl-inet.com/t/flint-2-not-port-forwarding/59814>\
**Category:** Router\
**Created:** [June 13, 2025, 8:48am UTC](https://forum.gl-inet.com/t/flint-2-not-port-forwarding/59814 "2025-06-13T08:48:11Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Freymotifs](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/f/50afbb/32.png) [@Freymotifs](https://forum.gl-inet.com/u/Freymotifs)\
**Post date:** [June 13, 2025, 8:48am UTC](https://forum.gl-inet.com/t/flint-2-not-port-forwarding/59814/1 "2025-06-13T08:48:11Z")

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WAN Portforwarding has suddenly failed on my Flint 2. Previously I was forwarding port 443 (SSL) from WAN -\> my Raspberry Pi in LAN which is hosting a server. Now attempts to access this from outside the network fail, they end up just timing out. When I check if the port is open with online port-checker tools, they state the port is closed. The same thing happens with UDP ports opened for Wireguard. I have tried updating the router firmware to the latest, and restarting, with no resolution.

 ![image](https://forum-static.gl-inet.com/original/3X/b/b/bbab5e71d9777ce93708f3dbc1923e6cd797b1b9.png)

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**Author:** ![bruce](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/bruce/32/35649_2.png) [@bruce](https://forum.gl-inet.com/u/bruce)\
**Post date:** [June 13, 2025, 9:58am UTC](https://forum.gl-inet.com/t/flint-2-not-port-forwarding/59814/2 "2025-06-13T09:58:21Z")

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Hello,

SSH to the router, and execute these commands, post the results here:

```auto
ifconfig
ip r
arp -a
curl <your Raspberry Pi IP:443>
ping <Raspberry Pi IP>

```

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<div class="post-metadata">

**Author:** ![Freymotifs](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/f/50afbb/32.png) [@Freymotifs](https://forum.gl-inet.com/u/Freymotifs)\
**Post date:** [June 14, 2025, 3:26am UTC](https://forum.gl-inet.com/t/flint-2-not-port-forwarding/59814/4 "2025-06-14T03:26:03Z")

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I figured it out, it turns out my ISP decided to switch us to CGNAT without telling us. Switched to a new ISP and got a dynamic IP and now everything is working again.

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**Author:** ![system](https://forum-static.gl-inet.com/original/3X/7/7/77e28f6cb342ac4bd641bd9a6254595d61b2812a.png) [@system](https://forum.gl-inet.com/u/system)\
**Post date:** [December 15, 2025, 8:53am UTC](https://forum.gl-inet.com/t/flint-2-not-port-forwarding/59814/6 "2025-12-15T08:53:50Z")

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