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Author Topic: Help with security tips for network using http server  (Read 1724 times)

hrayon

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Help with security tips for network using http server
« on: October 21, 2021, 02:54:32 pm »
Hi!
I implemented a service and put an Indy http server on it (TIdHTTPServer Indy 10) to listen on port 8180. I test all requests in F_IdHTTPServer_Web.OnCommandGet and if I don't receive the inputs I'm waiting for, I exit the procedure.
I compiled and left the service running for several days on a server, on a LAN, behind a firewall.
My questions are:
1-See the attached figure. This happened after a few days. It's a ProcessExplorer screenshot of the service. Does this mean that the firewall is not blocking properly since I don't know about these IPs (neither recyber.net)?
2-Is there any vulnerability in the TIdHTTPServer component being exploited?
3-Any tips on how to prevent these strange IPs from connecting to the service besides being blocked by the firewall?

loaded

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Re: Help with security tips for network using http server
« Reply #1 on: October 21, 2021, 08:57:17 pm »
First of all, if your server is open to the Internet, you will definitely have unwanted guests in some way. So I don't think this is indy related.
To deal with these situations;
I recommend using a very strong firewall like pfsense. https://www.pfsense.org/
If you want to get more detailed information;
I recommend using wireshark  https://www.wireshark.org/  to analyze network traffic. Thus, you can examine the incoming and outgoing package contents.
If Ide=Lazarus 2.0.10 32 Bit and Os=Win 10 Home 64 Bit then Get up and do something useful! Because God is the helper of those who start again;

hrayon

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Re: Help with security tips for network using http server
« Reply #2 on: October 22, 2021, 01:46:04 pm »
OK, thank you!

 

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