Cannot change file permission after chmod 400

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I am about to prepare for using AWS Jupyter Notebook. However, when using SSH to connect AWS, warning message of unprotected private key file prompted out. 



@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: UNPROTECTED PRIVATE KEY FILE! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0555 for 'YYF_Frankfurt.pem' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
Load key "YYF_Frankfurt.pem": bad permissions
ec2-user@ec2-XX-XX-XXX-XX.eu-central-1.compute.amazonaws.com: Permission denied (publickey).


I followed the instruction and use chmod 400 to change permission. However, the permission did not change. 



hkgyyf@LAPTOP-R3DDSPP0:/mnt/c/Users/Yuasto/Desktop/Trading$ chmod 400 YYF_Frankfurt.pem
hkgyyf@LAPTOP-R3DDSPP0:/mnt/c/Users/Yuasto/Desktop/Trading$ ls -l
-r-xr-xr-x 1 hkgyyf hkgyyf 1692 Mar 24 15:41 YYF_Frankfurt.pem


Googled a lot and still cant find solution. Please help




permissions ssh chmod amazon-ec2




share|improve this question





















  • Try sudo chmod 400 ....
    – Jos
    2 days ago










  • @Jos no change even including sudo
    – hkgyyf
    2 days ago










  • Ah now I notice. Your pem key resides on a Windows drive which obviously doesn't use Linux-type permissions. Move your key to a Linux drive.
    – Jos
    2 days ago










  • Fat and ntfs do not use permissions
    – Panther
    2 days ago
















up vote
0
down vote

favorite












I am about to prepare for using AWS Jupyter Notebook. However, when using SSH to connect AWS, warning message of unprotected private key file prompted out. 



@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: UNPROTECTED PRIVATE KEY FILE! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0555 for 'YYF_Frankfurt.pem' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
Load key "YYF_Frankfurt.pem": bad permissions
ec2-user@ec2-XX-XX-XXX-XX.eu-central-1.compute.amazonaws.com: Permission denied (publickey).


I followed the instruction and use chmod 400 to change permission. However, the permission did not change. 



hkgyyf@LAPTOP-R3DDSPP0:/mnt/c/Users/Yuasto/Desktop/Trading$ chmod 400 YYF_Frankfurt.pem
hkgyyf@LAPTOP-R3DDSPP0:/mnt/c/Users/Yuasto/Desktop/Trading$ ls -l
-r-xr-xr-x 1 hkgyyf hkgyyf 1692 Mar 24 15:41 YYF_Frankfurt.pem


Googled a lot and still cant find solution. Please help




permissions ssh chmod amazon-ec2




share|improve this question





















  • Try sudo chmod 400 ....
    – Jos
    2 days ago










  • @Jos no change even including sudo
    – hkgyyf
    2 days ago










  • Ah now I notice. Your pem key resides on a Windows drive which obviously doesn't use Linux-type permissions. Move your key to a Linux drive.
    – Jos
    2 days ago










  • Fat and ntfs do not use permissions
    – Panther
    2 days ago












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I am about to prepare for using AWS Jupyter Notebook. However, when using SSH to connect AWS, warning message of unprotected private key file prompted out. 



@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: UNPROTECTED PRIVATE KEY FILE! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0555 for 'YYF_Frankfurt.pem' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
Load key "YYF_Frankfurt.pem": bad permissions
ec2-user@ec2-XX-XX-XXX-XX.eu-central-1.compute.amazonaws.com: Permission denied (publickey).


I followed the instruction and use chmod 400 to change permission. However, the permission did not change. 



hkgyyf@LAPTOP-R3DDSPP0:/mnt/c/Users/Yuasto/Desktop/Trading$ chmod 400 YYF_Frankfurt.pem
hkgyyf@LAPTOP-R3DDSPP0:/mnt/c/Users/Yuasto/Desktop/Trading$ ls -l
-r-xr-xr-x 1 hkgyyf hkgyyf 1692 Mar 24 15:41 YYF_Frankfurt.pem


Googled a lot and still cant find solution. Please help




permissions ssh chmod amazon-ec2




share|improve this question













I am about to prepare for using AWS Jupyter Notebook. However, when using SSH to connect AWS, warning message of unprotected private key file prompted out. 



@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: UNPROTECTED PRIVATE KEY FILE! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0555 for 'YYF_Frankfurt.pem' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
Load key "YYF_Frankfurt.pem": bad permissions
ec2-user@ec2-XX-XX-XXX-XX.eu-central-1.compute.amazonaws.com: Permission denied (publickey).


I followed the instruction and use chmod 400 to change permission. However, the permission did not change. 



hkgyyf@LAPTOP-R3DDSPP0:/mnt/c/Users/Yuasto/Desktop/Trading$ chmod 400 YYF_Frankfurt.pem
hkgyyf@LAPTOP-R3DDSPP0:/mnt/c/Users/Yuasto/Desktop/Trading$ ls -l
-r-xr-xr-x 1 hkgyyf hkgyyf 1692 Mar 24 15:41 YYF_Frankfurt.pem


Googled a lot and still cant find solution. Please help





permissions ssh chmod amazon-ec2





share|improve this question












share|improve this question




share|improve this question








edited 2 days ago









Byte Commander

57.4k26152261




57.4k26152261









asked 2 days ago









hkgyyf

1




1











  • Try sudo chmod 400 ....
    – Jos
    2 days ago










  • @Jos no change even including sudo
    – hkgyyf
    2 days ago










  • Ah now I notice. Your pem key resides on a Windows drive which obviously doesn't use Linux-type permissions. Move your key to a Linux drive.
    – Jos
    2 days ago










  • Fat and ntfs do not use permissions
    – Panther
    2 days ago
















  • Try sudo chmod 400 ....
    – Jos
    2 days ago










  • @Jos no change even including sudo
    – hkgyyf
    2 days ago










  • Ah now I notice. Your pem key resides on a Windows drive which obviously doesn't use Linux-type permissions. Move your key to a Linux drive.
    – Jos
    2 days ago










  • Fat and ntfs do not use permissions
    – Panther
    2 days ago















Try sudo chmod 400 ....
– Jos
2 days ago




Try sudo chmod 400 ....
– Jos
2 days ago












@Jos no change even including sudo
– hkgyyf
2 days ago




@Jos no change even including sudo
– hkgyyf
2 days ago












Ah now I notice. Your pem key resides on a Windows drive which obviously doesn't use Linux-type permissions. Move your key to a Linux drive.
– Jos
2 days ago




Ah now I notice. Your pem key resides on a Windows drive which obviously doesn't use Linux-type permissions. Move your key to a Linux drive.
– Jos
2 days ago












Fat and ntfs do not use permissions
– Panther
2 days ago




Fat and ntfs do not use permissions
– Panther
2 days ago















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