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TL-ER6020 VPN (ipsec) - can't see all computers in lan

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TL-ER6020 VPN (ipsec) - can't see all computers in lan

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.

TL-ER6020 VPN (ipsec) - can't see all computers in lan

Bangiel

2024-02-12 13:38:51 - last edited 2024-02-23 02:51:23

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TL-ER6020 VPN (ipsec) - can't see all computers in lan

2024-02-12 13:38:51 - last edited 2024-02-23 02:51:23

Model: TL-ER6020

Hardware Version: V2

Firmware Version: 2.0.3 Build 20200623 Rel.39031

I have two TL-ER6020 routers, they are connected via a built-in ipsec lan-to-lan VPN. One has the subnet 192.168.10.xxx, the other 192.168.1.xxx. The problem is that not all computers can see each other. (VNC, RDP, Ping etc.). The most important computers/servers have permanently assigned addresses (MAC -> IP), the DHCP server is running. Do you have any idea where to start looking for the problem? If you need additional information, I will provide it. Thanks in advance for the hints.

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Clive_A

2024-02-18 02:53:11 - last edited 2024-02-23 02:51:23

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Re:TL-ER6020 VPN (ipsec) - can't see all computers in lan-Solution

2024-02-18 02:53:11 - last edited 2024-02-23 02:51:23

Hi @Bangiel

Thanks for posting in our business forum.

1. Examine your firewall on the computers.

2. Try ping on and test if the IPsec is working or not.

3. IPsec does not work in Network Discovery. That requires NetBIOS feature. So the VPN tunnel does not help you forward that. Note this.

If ping works, that means VPN works as well as the firewall is not blocking and you should access them well.

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d0ugmac1

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2024-02-12 14:39:54

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Re:TL-ER6020 VPN (ipsec) - can't see all computers in lan

2024-02-12 14:39:54

@Bangiel

Can you ping IPs in one subnet from IPs in the other? If so, at least your routing is good.

If your application depends on broadcast traffic to 'announce' services, such as Bonjour, then it's likely that your tunnel is not fowarding this type of traffic.

I would suggest setting up a local DNS server (like PiHole) with the required IP->name mappings for both sides, and you configure clients on both ends to use that for DNS resolution. You should then be able to access services on either end by name at least, but you still won't 'see' them in any kind of 'network neighbourhood'.

<< Paying it forward, one juicy problem at a time... >>

Clive_A

2024-02-18 02:53:11 - last edited 2024-02-23 02:51:23

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Re:TL-ER6020 VPN (ipsec) - can't see all computers in lan-Solution

2024-02-18 02:53:11 - last edited 2024-02-23 02:51:23

Hi @Bangiel

Thanks for posting in our business forum.

1. Examine your firewall on the computers.

2. Try ping on and test if the IPsec is working or not.

3. IPsec does not work in Network Discovery. That requires NetBIOS feature. So the VPN tunnel does not help you forward that. Note this.

If ping works, that means VPN works as well as the firewall is not blocking and you should access them well.

TL-ER6020 VPN (ipsec) - can't see all computers in lan

TL-ER6020 VPN (ipsec) - can't see all computers in lan

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