# Issue with Windows Firewall

**URL:** <https://talk.jelurida.com/t/issue-with-windows-firewall/382>\
**Category:** Developers\
**Created:** [1 June 2021 07:18 UTC](https://talk.jelurida.com/t/issue-with-windows-firewall/382 "2021-06-01T07:18:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sandoche](https://talk.jelurida.com/user_avatar/talk.jelurida.com/sandoche/32/89_2.png) [@sandoche](https://talk.jelurida.com/u/sandoche)\
**Post date:** [1 June 2021 07:18 UTC](https://talk.jelurida.com/t/issue-with-windows-firewall/382/1 "2021-06-01T07:18:12Z")

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Hi,

I did a test I was running one NXT node on my windows computer (A) and another one on a local Windows VM (B) running on the same computer. To do this test I disconnected the connexion.

I wanted to be able to add the IP of B as a peer in A. I did set up well the nxt.propreties file. But it didn't work. To make it work I had to update the firewall manually and add this two lines:

 ![firewall](https://talk.jelurida.com/uploads/default/original/1X/ea97a151093892745da8ce9463756c1d602bd1ab.png)

After that it worked perfectly. Is this a normal behavior?

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**Author:** ![sergi](https://talk.jelurida.com/user_avatar/talk.jelurida.com/sergi/32/21_2.png) [@sergi](https://talk.jelurida.com/u/sergi)\
**Post date:** [2 June 2021 05:58 UTC](https://talk.jelurida.com/t/issue-with-windows-firewall/382/2 "2021-06-02T05:58:34Z")

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Yes. That's what a firewall is about: to allow or deny external connections to local ports. The fact that you used a VM and everything was running on the same machine doesn't matter, they are still separate IP addresses seen as different computers.