Post request in 3rd party endpoint Failed time out

Question

I deploy my laravel app to digital ocean droplet. everything work fine. when I send post request from my server to my 3rd party end point 196.188.120.3:38443/…, respond me with timeout error. here is what did so far

test different 3rd party end point with port 8080 and it work fine(working),
test in postman 96.188.120.3:38443/… it works fine (client server working),
test in 96.188.120.3:38443/… local environment it is working fine (working),

My suspension on this problem is

my Firwall outbouding error, sudo ufw allow out on eth0 to any port 38443 i add this rule(noting change),
curl -kv 96.188.120.3:38443, stil time out,
review my nginx (but i guess its for inbounding request),
i also setup cloudflare (but i guess its responsible for inbounding, i proxy orange, but i guess its not change my outbounding ip address),
they(3rd party end point owners) told me send them ip address and port to white list (I send them my droplet ip address and port (443) because i my site is https from cloudflare), u think its wrong ?
everthing i try is failed. I run thin in my droplet terminal iptables -A INPUT -p tcp --dport 38443 -m conntrack --ctstate NEW,ESTABLISHED -j ACCEPT but still failed

any idea please i have this issue for week, I am stressed thanks

Bobby · Answer

Hi there,

Indeed, Cloudflare and Nginx should not be related here as you are making outbound calls to that API.

I just tried connecting to telnet 196.188.120.3 38443 and it times out for me as well. So it sounds like that the third party provider has some firewall in place blocking all incoming traffic on that port.

The third party provider needs to allow your Droplet’s IP address to access port 38443 as this is the port that you are connecting to.

Port 443 is your HTTPS port for incoming connections.

Let me know how it goes once they allow your Droplet’s IP address for that 38443 port!

- Bobby

showmore5 · Answer

when I contact 3rd party they request Ip address and port to whitelist, the problem is when I check all my outbounding requests use different port no, what should I do? Its possible to force all my post request with static port or should I give them only my droplet Ip address?

KFSys · Answer

Heya,

I can confirm as the others posted that I can’t connect to 196.188.120.3 on pot 38443. This means the provider of that API is blocking the requests.

You can contact them and give them your IP address to whitelist. That way you would be able to connect to the said IP.

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Post request in 3rd party endpoint Failed time out

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