FireTv on Virtual Access Point + Plex = No Connect

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MLandi
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PostPosted: Tue Mar 14, 2023 23:54    Post subject: FireTv on Virtual Access Point + Plex = No Connect Reply with quote
I'm stumped, and I don't know if this is a dd-wrt issue. I have a FireTV Stick. For my home network, I created a VAP for devices that I don't want talking to my NAS or each other. The FireTV connects to the VAP, no problem. I have Plex on my NAS, no problem. I can connect to my Plex server from any browser on or off my network. I can connect using my Android phone or my car, on the home network or not. No problem.

The FireTV Stick will not connect to the Plex Server. I am suspecting that there is something blocking a connection from 192.168.32.0/24 to 192.16.16.0/24. (The .32 network is the VAP).

Anyone have any ideas? Maybe this a Plex setting issue, but I've exhausted my ideas and of course Plex is useless with their help files.

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kernel-panic69
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PostPosted: Wed Mar 15, 2023 0:47    Post subject: Reply with quote
Mutlicast to Unicast.
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MLandi
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PostPosted: Wed Mar 15, 2023 2:45    Post subject: Reply with quote
kernel-panic69 wrote:
Mutlicast to Unicast.


I know I should know what you mean, but I'm not following

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Netgear R9000
DD-WRT v3.0-r55460 std (03/25/24)
Linux 4.9.337 #715 SMP Mon Mar 25 06:15:53 +07 2024 armv7l
Gateway, AP, DNSMasq, Clock 2000MHz
VAP on wlan1 for internet devices
IPv4 & IPv6 (Prefix Delegation)
Static Leases & DHCP
CloudFlare, no SFE, SmartDNS, no QoS
2.4GHz: Vanilla, Airtime Fairness, NG-Mixed, ACK Timing 3150, WPA2 w/AES & WPA3
5GHz: Vanilla, Airtime Fairness, AC/N Mixed, ACK Timing 3150, WPA2 w/AES & WPA3
2 Netgear AX1800 WiFi Mesh Extenders
Xfinity 1.2Gbps/35Mbps
kernel-panic69
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Location: Texas, USA

PostPosted: Wed Mar 15, 2023 3:16    Post subject: Reply with quote
Wifi doesn't behave well with multicast traffic. I forget if this setting is also available for VAPs, but I do recall seeing it for the main AP interface in the webUI. This could be part of the problem (or not).
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foz111
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PostPosted: Wed Mar 15, 2023 9:47    Post subject: Reply with quote
Not sure if your trying to access plex over local LAN assume you are, so providing your firewall is allowing you access from FS to NAS subnets, but if your using a Qnap NAS you'll need to add IP range in allow/deny list, Control panel>Security>Allow/Deny List, may be similar in other makes.
Hope this helps

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egc
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PostPosted: Wed Mar 15, 2023 10:51    Post subject: Reply with quote
Another thing to look at is if you connect to your plex server via its domain name (it will use NAT redirect/hairpinning) then the return traffic is going directly to your LAN client.

Recently DDWRT has begun to use rules to block INVALID traffic and this kind of asymmetric traffic, although perfectly legitimate, is also DROPped by these rules.

I have requested (and made) a patch to have a setting for the INVALID rules but it was turned down.

So check your firewall rules if your request is blocked

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MLandi
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Posts: 1008

PostPosted: Wed Mar 15, 2023 12:13    Post subject: Reply with quote
Thanks everyone. I have some tweaking to do, and some experimenting to try.
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Netgear R9000
DD-WRT v3.0-r55460 std (03/25/24)
Linux 4.9.337 #715 SMP Mon Mar 25 06:15:53 +07 2024 armv7l
Gateway, AP, DNSMasq, Clock 2000MHz
VAP on wlan1 for internet devices
IPv4 & IPv6 (Prefix Delegation)
Static Leases & DHCP
CloudFlare, no SFE, SmartDNS, no QoS
2.4GHz: Vanilla, Airtime Fairness, NG-Mixed, ACK Timing 3150, WPA2 w/AES & WPA3
5GHz: Vanilla, Airtime Fairness, AC/N Mixed, ACK Timing 3150, WPA2 w/AES & WPA3
2 Netgear AX1800 WiFi Mesh Extenders
Xfinity 1.2Gbps/35Mbps
MLandi
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Joined: 04 Dec 2007
Posts: 1008

PostPosted: Thu Mar 16, 2023 13:01    Post subject: Reply with quote
MLandi wrote:
Thanks everyone. I have some tweaking to do, and some experimenting to try.


I solved the problem by disabling all setting on the virtual interface and then trying the settings one at a time. Yes, it took a while. What I found was I need Masquerade / NAT enabled. I'm not sure why; I have more reading to do.

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Netgear R9000
DD-WRT v3.0-r55460 std (03/25/24)
Linux 4.9.337 #715 SMP Mon Mar 25 06:15:53 +07 2024 armv7l
Gateway, AP, DNSMasq, Clock 2000MHz
VAP on wlan1 for internet devices
IPv4 & IPv6 (Prefix Delegation)
Static Leases & DHCP
CloudFlare, no SFE, SmartDNS, no QoS
2.4GHz: Vanilla, Airtime Fairness, NG-Mixed, ACK Timing 3150, WPA2 w/AES & WPA3
5GHz: Vanilla, Airtime Fairness, AC/N Mixed, ACK Timing 3150, WPA2 w/AES & WPA3
2 Netgear AX1800 WiFi Mesh Extenders
Xfinity 1.2Gbps/35Mbps
egc
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Posts: 12837
Location: Netherlands

PostPosted: Thu Mar 16, 2023 13:18    Post subject: Reply with quote
Without Masquerade/NAT you should not have Internet Access.

By default DDWRT only Masquerades traffic out via the WAN from the routers subnet.

As an unbridged VAP is on its own subnet then that subnet will not be Masqueraded out via the WAN and thus you do not have internet access.

It is on by default for a reason Wink

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Install guide R6400v2, R6700v3,XR300:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
Install guide R7800/XR500: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
MLandi
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Joined: 04 Dec 2007
Posts: 1008

PostPosted: Thu Mar 16, 2023 13:23    Post subject: Reply with quote
egc wrote:
Without Masquerade/NAT you should not have Internet Access


Thank you. I did not realize what the setting did, and that explains the issues I was fighting with. Too bad the default value is not shown next to many of the DD-WRT settings.

_________________
Netgear R9000
DD-WRT v3.0-r55460 std (03/25/24)
Linux 4.9.337 #715 SMP Mon Mar 25 06:15:53 +07 2024 armv7l
Gateway, AP, DNSMasq, Clock 2000MHz
VAP on wlan1 for internet devices
IPv4 & IPv6 (Prefix Delegation)
Static Leases & DHCP
CloudFlare, no SFE, SmartDNS, no QoS
2.4GHz: Vanilla, Airtime Fairness, NG-Mixed, ACK Timing 3150, WPA2 w/AES & WPA3
5GHz: Vanilla, Airtime Fairness, AC/N Mixed, ACK Timing 3150, WPA2 w/AES & WPA3
2 Netgear AX1800 WiFi Mesh Extenders
Xfinity 1.2Gbps/35Mbps
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