[alvaroag]

Add me to skype so I can take a look at this.

[NDCrawshaw]

I used Wireshark to track the packet leaving the VPS, and used pcap to capture on the other server, the packet leaves successfully, and arrives at the other server, then a packet leaves the other server but never arrives at the VPS.
I tried disabling the firewall on the VPS, even though these is an exception in the firewall.
And mitigation is an auto as by default, I have also added the IP of the other server to the whitelist for the firewall in the OVH manager as suggested by OVH technical support.

This is less of a problem now, as I was able to reroute everything though port 450, but still wondering why 445 isn't working.

[alvaroag]

Have you tried checking traffic with tcpdump or wireshark?

[Criot]

All ports are open by default with OVH so you shouldn't be affected unless you have permanent mitigation on, but even so I wouldn't expect it to be filtering legitimate traffic. Are you sure the ports not blocked on the firewall in your VPS itself?

[NDCrawshaw]

Hi,

I was just wondering if anyone knows if OVH filters out packets destined for port 445. As I have a service that runs its API over port 445, when I change the API port to something else eg 450 it works fine, just not 445, I can access the API on port 445 from other devices just not the OVH VPS.

Thanks,
Nathan.