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I need to connect to my own server that runs Linux Mint.

After installing Tailscale on both PCs (client and server) I can successfully ping the server from client, but I'm unable to traceroute it.

Vice-versa, from server to client everything is working smooth. I tried checking firewalls on the server, but I'm unable to find anything that may block the connection.

I stopped the ufw service(that was anyway already inactive), allowed anything in and out using these iptables commands:

iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -F

I have no idea what may prevent the connection.

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  • I have no firewall as far as I'm aware. I disabled all firewalls also on my router settings. I don't know what else to check. Something really odd happening.
    – Zep
    Commented Aug 3, 2023 at 22:45
  • Does the server receive any of the traceroute probes? Do you see them in the packet capture? Have you tried both UDP and ICMP traceroute modes?
    – grawity_u1686
    Commented Aug 4, 2023 at 4:19
  • No nothing arrives to the server, It fails with a !H error. Yes i tried every mode.
    – Zep
    Commented Aug 4, 2023 at 5:10
  • Are there are two subnets involved ? (link)
    – harrymc
    Commented Aug 4, 2023 at 12:56

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