# \[FEATURE-1260\] The 'localhost' IP Address doesn't detect in Security Zone

**URL:** <https://forum.inductiveautomation.com/t/feature-1260-the-localhost-ip-address-doesnt-detect-in-security-zone/40098>\
**Category:** Ignition Early Access\
**Created:** [October 28, 2020, 2:50pm UTC](https://forum.inductiveautomation.com/t/feature-1260-the-localhost-ip-address-doesnt-detect-in-security-zone/40098 "2020-10-28T14:50:21Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![nader.chinichian](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nader.chinichian/32/9261_2.png) [@nader.chinichian](https://forum.inductiveautomation.com/u/nader.chinichian)\
**Post date:** [October 28, 2020, 2:50pm UTC](https://forum.inductiveautomation.com/t/feature-1260-the-localhost-ip-address-doesnt-detect-in-security-zone/40098/1 "2020-10-28T14:50:21Z")

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Hi  
I try to add localhost as IP address in a Security Zone but it seems it doesn’t detect localhost.  
But interesting 127.0.0.1 is working even both 127.0.0.1 = localhost. So what should I do when I want to add localhost to a security zone?

v8.0.12

![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/3/a39bd55e5bc5bcc21260c7dfadf9eeda1c4ad070.png)

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [October 28, 2020, 3:01pm UTC](https://forum.inductiveautomation.com/t/feature-1260-the-localhost-ip-address-doesnt-detect-in-security-zone/40098/2 "2020-10-28T15:01:55Z")

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I’d expect that if it works at all it would work when you put it in the hostname list, not the IP address list.

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**Author:** ![nader.chinichian](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/nader.chinichian/32/9261_2.png) [@nader.chinichian](https://forum.inductiveautomation.com/u/nader.chinichian)\
**Post date:** [October 29, 2020, 2:28pm UTC](https://forum.inductiveautomation.com/t/feature-1260-the-localhost-ip-address-doesnt-detect-in-security-zone/40098/3 "2020-10-29T14:28:40Z")

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Still doesn’t work. ;(  
 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/c/7/c78567bcc292e42e1542a2b6a38e354f39b19706.png)

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**Author:** ![jspecht](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jspecht/32/6465_2.png) [@jspecht](https://forum.inductiveautomation.com/u/jspecht)\
**Post date:** [August 2, 2021, 3:04pm UTC](https://forum.inductiveautomation.com/t/feature-1260-the-localhost-ip-address-doesnt-detect-in-security-zone/40098/4 "2021-08-02T15:04:59Z")

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The latest 8.1.9 early access build includes a new setting to opt-into client hostname resolution. For more detail, see: [Nightly 8.1 Changelogs - 2021 - #128 by sreis](https://forum.inductiveautomation.com/t/nightly-8-1-changelogs-2021/42410/128)

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**Author:** ![Behzad.Ebrahimi](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/behzad.ebrahimi/32/38108_2.png) [@Behzad.Ebrahimi](https://forum.inductiveautomation.com/u/Behzad.Ebrahimi)\
**Post date:** [August 27, 2022, 2:30am UTC](https://forum.inductiveautomation.com/t/feature-1260-the-localhost-ip-address-doesnt-detect-in-security-zone/40098/5 "2022-08-27T02:30:31Z")

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‘localhost’ does not work in Version: 8.1.20 (b2022082313)  
Actually I can not find your new mentioned option ‘opt-into’.

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**Author:** ![witman](https://avatars.discourse-cdn.com/v4/letter/w/d2c977/32.png) [@witman](https://forum.inductiveautomation.com/u/witman)\
**Post date:** [August 27, 2022, 12:12pm UTC](https://forum.inductiveautomation.com/t/feature-1260-the-localhost-ip-address-doesnt-detect-in-security-zone/40098/6 "2022-08-27T12:12:49Z")

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The setting is called “Resolve Client Hostnames.”

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/f/3/f353e32b29898b6856f9132077ee5b60ef75f65d.png)

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**Author:** ![Nicholas\_Rodgers](https://avatars.discourse-cdn.com/v4/letter/n/77aa72/32.png) [@Nicholas\_Rodgers](https://forum.inductiveautomation.com/u/Nicholas_Rodgers)\
**Post date:** [September 12, 2023, 3:43am UTC](https://forum.inductiveautomation.com/t/feature-1260-the-localhost-ip-address-doesnt-detect-in-security-zone/40098/7 "2023-09-12T03:43:33Z")

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'localhost' or 127.0.0.1 still doesn't seem to work in Version 8.1.31. Are there any updates here?