#????????????????????Щ???????????????rootkit???????????????????????????????????????
Performing additional rootkit checks
Suckit Rookit additional checks                          [ OK ]
Checking for possible rootkit files and directories      [ None found ]
Checking for possible rootkit strings                    [ None found ]
Performing malware checks
Checking running processes for suspicious files          [ None found ]
Checking for login backdoors                          [ None found ]
Checking for suspicious directories                     [ None found ]
Checking for sniffer log files                          [ None found ]
Performing Linux specific checks
Checking loaded kernel modules                     [ OK ]
Checking kernel module names                     [ OK ]
[Press <ENTER> to continue]
#?????????????????????硢????????????????????????????á?SSH???á??????????м??
Checking the network...
Performing checks on the network ports
Checking for backdoor ports                         [ None found ]
Performing checks on the network interfaces
Checking for promiscuous interfaces                      [ None found ]
Checking the local host...
Performing system boot checks
Checking for local host name                         [ Found ]
Checking for system startup files                        [ Found ]
Checking system startup files for malware                [ None found ]
Performing group and account checks
Checking for passwd file [ Found ]
Checking for root equivalent (UID 0) accounts            [ None found ]
Checking for passwordless accounts                   [ None found ]
....(??)....
[Press <ENTER> to continue]
#????????巋???????????ó???汾???м??
Checking application versions...
Checking version of GnuPG[ OK ]
Checking version of OpenSSL                        [ Warning ]
Checking version of OpenSSH                        [ OK ]
#?????????????????????????????????????????????????????????????????????????
System checks summary
=====================
File properties checks...
Required commands check failed
Files checked: 137
Suspect files: 4
Rootkit checks...
Rootkits checked : 311
Possible rootkits: 0
Applications checks...
Applications checked: 3
Suspect applications: 1
The system checks took: 6 minutes and 41 seconds
??????Linux??????rkhunter?????????????????????????в?????????????????????????????????????????????????????????????????м???????У?????????????????????Enter???????????????ó?????????У????????????????
????[root@server ~]# /usr/local/bin/rkhunter –check –skip-keypress
??????????????ü????????????У??????????/etc/crontab?м????????????
????30 09 * * * root /usr/local/bin/rkhunter –check –cronjob
??????????rkhunter?????????????9:30????????Ρ?
??????????￡?
??????????Bash????????SSH bash?????????????????
??????????????????????????????
????$ env x='() { :;}; echo vulnerable' bash -c "echo this is a test"
????vulnerable
????this is a test
??????????????????????????????????????????????????
???????????????
????yum -y update bash
????????bash????в????
????$ env x='() { :;}; echo vulnerable' bash -c "echo this is a test"
????bash: warning: x: ignoring function definition attempt
????bash: error importing function definition for `x'
????this is a test
???????????????????????????????