= ! °ü¸®¹æ¾î °ø°£ 51-56 |
= |
= \TableOfContents0 |
= |
= !! level 51 |
= |
= + Ç®ÀÌ ¹æ¹ý |
= # |
= |
= - ½ÇÁ¦ Ç®ÀÌ |
= {{{ |
= |
= }}} |
= |
= > pass = <font color=red></font> |
= |
= !! level 52 |
= |
= + Ç®ÀÌ ¹æ¹ý |
= # /etc/sudoers ÆÄÀÏ ÆíÁý |
= |
= - ½ÇÁ¦ Ç®ÀÌ |
= {{{ |
= # vi /etc/sudoers |
= |
= # sudoers file. |
= # |
= # This file MUST be edited with the 'visudo' command as root. |
= # |
= # See the sudoers man page for the details on how to write a sudoers file. |
= # |
= # Host alias specification |
= # User alias specification |
= # Cmnd alias specification |
= # Defaults specification |
= # User privilege specification |
= root ALL=(ALL) ALL |
= # Uncomment to allow people in group wheel to run all commands |
= # %wheel ALL=(ALL) ALL |
= # Same thing without a password |
= # %wheel ALL=(ALL) NOPASSWD: ALL |
= # Samples |
= # %users ALL=/sbin/mount /cdrom,/sbin/umount /cdrom |
= # %users localhost=/sbin/shutdown -h now |
= |
= user_admin ALL=/usr/sbin/useradd // Ãß°¡ ºÎºÐ |
= |
= "/etc/sudoers" 31 lines, 615 characters written |
= # finish |
= Success |
= |
= ¡Ø ¿ø·¡´Â visudo¸í·É¾î¸¦ ÅëÇؼ /etc/sudoers ¸¦ ÆíÁýÇØ¾ß ÇÑ´Ù°í ÇÔ |
= |
= }}} |
= |
= > pass = <font color=red>oksudoers</font> |
= |
= !! level 53 |
= |
= + Ç®ÀÌ ¹æ¹ý |
= # /etc/mail/sendmail.cf ÆÄÀÏ SmtpGreetingMessage ³»¿ë »èÁ¦ |
= # /etc/mail/helpfile »èÁ¦ |
= # /etc/mail/sendmail.cf ÆÄÀÏ Local and Program Mailer specification ºÎºÐ º¯°æ |
= # /etc/mail/sendmail.cf ÆÄÀÏ MaxMessageSize º¯°æ |
= # /etc/mail/sendmail.cf ÆÄÀÏ MaxRecipientsPerMessage º¯°æ |
= |
= - ½ÇÁ¦ Ç®ÀÌ |
= {{{ |
= # rm /etc/mail/helpfile |
= # vi sendmail.cf |
= # SMTP initial login message (old $e macro) |
= O SmtpGreetingMessage= |
= |
= Mlocal, P=/usr/bin/procmail, F=lsDFMAw5:/|@qSPfhn9, S=10/30, |
= R=20/40,M=5000000, T=DNS/RFC822/X-Unix, A=procmail -Y -a $h -d $u |
= |
= # maximum message size |
= O MaxMessageSize=5000000 |
= |
= # maximum number of recipients per SMTP envelope |
= O MaxRecipientsPerMessage=20 |
= # |
= # ps |
= PID TTY TIME CMD |
= 15227 pts/11 0:00 bash |
= 15230 pts/11 0:00 sendmail |
= 15492 pts/11 0:00 ps |
= # kill -1 15230 |
= # finish |
= Success. |
= }}} |
= |
= > pass = <font color=red>sendmailhelpno</font> |
= |
= !! level 54 |
= |
= + Ç®ÀÌ ¹æ¹ý |
= # __ssh-keygen__ ¸í·É¾î »ç¿ë ºñ¹ÐÅ° °ø°³Å°¸¦ ÀÛ¼º |
= # scp ÅëÇؼ °ø°³Å° authorized_key »ý¼º |
= |
= - ½ÇÁ¦ Ç®ÀÌ |
= {{{ |
= # ssh-keygen -t rsa |
= Generating public/private rsa key pair. |
= Enter file in which to save the key (/.ssh/id_rsa):/.ssh/id_rsa |
= Enter passphrase (empty for no passphrase): |
= Enter same passphrase again: |
= Your identification has been saved in /.ssh/id_rsa. |
= Your public key has been saved in /.ssh/id_rsa.pub. |
= The key fingerprint is: |
= 8a:de:60:ff:20:6c:47:98:60:a1:55:61:e4:42:63:df root@mdsol |
= # |
= # ls -la |
= ÃÑ 1002 |
= drwxr-xr-x 2 root other 512 9¿ù 16ÀÏ 18:57 -p |
= drwxr-xr-x 22 root root 512 9¿ù 17ÀÏ 21:02 . |
= drwxr-xr-x 22 root root 512 9¿ù 17ÀÏ 21:02 .. |
= -rw-r--r-- 1 root other 307 9¿ù 17ÀÏ 21:02 .profile |
= d--------- 2 root other 512 9¿ù 14ÀÏ 17:44 .rhosts |
= drwxrwxrwx 2 root other 512 9¿ù 17ÀÏ 21:03 .ssh |
= drwxr-xr-x 2 root other 512 4¿ù 21ÀÏ 21:15 aa |
= drwxr-xr-x 3 root other 512 4¿ù 27ÀÏ 11:49 backup |
= drwxr-xr-x 3 root other 512 2004³â 1¿ù 31ÀÏ vsh |
= # scp .ssh/id_rsa.pub pascal@PubHome:.ssh/authorized_keys |
= Enter password: // Æнº¿öµå cobol ÀÔ·Â |
= # |
= # finish |
= success |
= }}} |
= |
= > pass = <font color=red>opensshkeygenok</font> |
= |
= !! level 55 |
= |
= + Ç®ÀÌ ¹æ¹ý |
+ # find ¿É¼Ç -perm , -nouser , -type |
+ # rediection »ç¿ë ÆÄÀÏ »ý¼º |
+ |
+ - ½ÇÁ¦ Ç®ÀÌ |
+ {{{ |
+ # find / -perm 20 -o -print > /tmp/write.txt |
+ # find / -nouser > /tmp/no_own.txt |
+ # find / -type f \( -perm -004000 -o -perm -002000 \) > /tmp/suid.txt |
+ # finish |
+ please wait while the program checks your answer. This may take several minutes. |
+ checking write.txt |
+ checking no_own.txt |
+ checking suid.txt |
+ Success. |
+ }}} |
+ |
+ > pass = <font color=red>permissioncheckok</font> |
+ |
+ !! level 56 |
+ |
+ + Ç®ÀÌ ¹æ¹ý |
= # |
= |
= - ½ÇÁ¦ Ç®ÀÌ |
= {{{ |
= |
= }}} |
= |
= > pass = <font color=red></font> |
- |
- !! level 56 |
- |
- + Ç®ÀÌ ¹æ¹ý |
- # |
- |
- - ½ÇÁ¦ Ç®ÀÌ |
- {{{ |
- |
- }}} |
- |
- > pass = <font color=red></font> |