How to make File Immutable in Linux : Even Root cannot delete : CHATTR : LSATTR

[root@ip-10-79-197-70 ec2-user]# sudo chattr +i -V backup/iptables.backup

chattr 1.42.9 (28-Dec-2013)

Flags of backup/iptables.backup set as ----i-----------

[root@ip-10-79-197-70 ec2-user]# sudo lsattr backup

----i----------- backup/iptables.backup

[root@ip-10-79-197-70 ec2-user]# rm -rf backup

rm: cannot remove ‘backup/iptables.backup’: Permission denied

[root@ip-10-79-197-70 ec2-user]# sudo rm -rf backup

rm: cannot remove ‘backup/iptables.backup’: Permission denied

[root@ip-10-79-197-70 ec2-user]# exit

exit

* chown, chmod, chgrp, chattr, id 2775 vs 775

 

Zscaler Private Access (ZPA) , CHATTR Linux, Immuable, VPC -> PrefixList

https://superuser.com/questions/1647896/putty-key-format-too-new-when-using-ppk-file-for-putty-ssh-key-authentication

VPC -> PrefixList
https://docs.aws.amazon.com/vpc/latest/userguide/managed-prefix-lists.html

https://aws.amazon.com/marketplace/pp/prodview-epy3md7fcvk4g?ref=cns_srchrow

https://www.fugue.co/blog/cloud-network-security-101-aws-security-groups-vs-nacls

https://www.javatpoint.com/aws-nacl-vs-security-group

https://mylearningsonline.com/aws-services/aws-vpc-security-group-nacl/

https://www.davidc.net/sites/default/subnets/subnets.html

http://www.cronmaker.com/

https://www.baeldung.com/linux/grep-sed-awk-differences#1-basic-syntax-1

chattr +i      [To make it immutable, Its not related to access permissions] - Change Attribute

SetUserBit

SetGroupBit                       chmod 2775          chmod +ug rw

which                                 Which executable

whereis

https://stackoverflow.com/questions/39239276/how-to-enable-a-directory-listing-in-apache-web-server