How to fix tcpdump error with file permission denied

Question: When I run tcpdump with “-r” option to read from a packet dump file, I am getting an error from tcpdump saying that “file permission denied”. I am getting this error even when I run tcpdump with root privilege. How can I fix this error? If this problem happens on Ubuntu, it is possible […]
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How to disable a particular AppArmor profile on Ubuntu

Question: Is it possible to disable AppArmor for a specific service or software only, instead of completely turning off AppArmor system-wide? AppArmor, which is considered an alternative to SELinux, is the default application access control system of Ubuntu. Many Ubuntu packages (e.g., libvirt, MySQL) come with their corresponding AppArmor profiles which restrict the capabilities of […]
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