| Server IP : 104.21.38.3 / Your IP : 172.69.176.160 Web Server : Apache System : Linux krdc-ubuntu-s-2vcpu-4gb-amd-blr1-01.localdomain 5.15.0-142-generic #152-Ubuntu SMP Mon May 19 10:54:31 UTC 2025 x86_64 User : www ( 1000) PHP Version : 7.4.33 Disable Function : passthru,exec,system,putenv,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /etc/sysctl.d/ |
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# These settings are specific to hardening the kernel itself from attack # from userspace, rather than protecting userspace from other malicious # userspace things. # # # When an attacker is trying to exploit the local kernel, it is often # helpful to be able to examine where in memory the kernel, modules, # and data structures live. As such, kernel addresses should be treated # as sensitive information. # # Many files and interfaces contain these addresses (e.g. /proc/kallsyms, # /proc/modules, etc), and this setting can censor the addresses. A value # of "0" allows all users to see the kernel addresses. A value of "1" # limits visibility to the root user, and "2" blocks even the root user. kernel.kptr_restrict = 1 # Access to the kernel log buffer can be especially useful for an attacker # attempting to exploit the local kernel, as kernel addresses and detailed # call traces are frequently found in kernel oops messages. Setting # dmesg_restrict to "0" allows all users to view the kernel log buffer, # and setting it to "1" restricts access to those with CAP_SYSLOG. # # dmesg_restrict defaults to 1 via CONFIG_SECURITY_DMESG_RESTRICT, only # uncomment the following line to disable. # kernel.dmesg_restrict = 0