Si Arriva ad un certo punto, di avere la necessità di proteggere nascondere i nostri file / cartelle da occhi indiscreti.

Operazione fattibile anche senza programmi specifici, proteggendo ad esempio con dei file zippati con delle password. Usare un programma può tornare più utile perché nasconde completamente gli oggetti, poi quelli di ultima generazione impediscono  l’accesso in DOS.

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Molte volte si tiene cura nel salvarsi i propri dati importanti in un angoletto sicuro del proprio hard disc. Tutte accortezze ritenute sicure, fino a quando non si rompe qualcosa . . .  click QUI.

Avere un modo sicuro , versatile e sempre disponibile può preventivamente limitare i danni.

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Sicuri sotto l’ombrello di Linux non possiamo escludere la possibilità di trasmettere file infetti dal nostro computer su altri targati Windows.

Ecco un metodo veloce per effettuare una scansione e  stare sicuri.

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Chkrootkit è la contromisura hai rootkit.

I rootkit è una tecnologia in grado di ocultare le tracce del proprio passaggio su computer altrui.

Fare un test su linux non fa male , chkrootkit ci da questa possibilità. Certo lungi dalle belle sorprese che si trovano su windows (troyan, blacdoor, spyware ) ma comunque sono in agguato lo stesso.

Installiamo chkrootkit

sudo apt-get install chkrootkit

poi da root eseguiamolo con

root@bio-desktop:~# chkrootkit
ROOTDIR is `/'
Checking `amd'... not found
Checking `basename'... not infected
Checking `biff'... not found
Checking `chfn'... not infected
Checking `chsh'... not infected
Checking `cron'... not infected
Checking `crontab'... not infected
Checking `date'... not infected
Checking `du'... not infected
Checking `dirname'... not infected
Checking `echo'... not infected
Checking `egrep'... not infected
Checking `env'... not infected
Checking `find'... not infected
Checking `fingerd'... not found
Checking `gpm'... not found
Checking `grep'... not infected
Checking `hdparm'... not infected
Checking `su'... not infected
Checking `ifconfig'... not infected
Checking `inetd'... not infected
Checking `inetdconf'... not infected
Checking `identd'... not found
Checking `init'... not infected
Checking `killall'... not infected
Checking `ldsopreload'... not infected
Checking `login'... not infected
Checking `ls'... not infected
Checking `lsof'... not infected
Checking `mail'... not found
Checking `mingetty'... not found
Checking `netstat'... not infected
Checking `named'... not found
Checking `passwd'... not infected
Checking `pidof'... not infected
Checking `pop2'... not found
Checking `pop3'... not found
Checking `ps'... not infected
Checking `pstree'... not infected
Checking `rpcinfo'... not infected
Checking `rlogind'... not found
Checking `rshd'... not found
Checking `slogin'... not infected
Checking `sendmail'... not found
Checking `sshd'... not infected
Checking `syslogd'... not infected
Checking `tar'... not infected
Checking `tcpd'... not infected
Checking `tcpdump'... not infected
Checking `top'... not infected
Checking `telnetd'... not found
Checking `timed'... not found
Checking `traceroute'... not found
Checking `vdir'... not infected
Checking `w'... not infected
Checking `write'... not infected
Checking `aliens'... no suspect files
Searching for sniffer's logs, it may take a while... nothing found
Searching for HiDrootkit's default dir... nothing found
Searching for t0rn's default files and dirs... nothing found
Searching for t0rn's v8 defaults... nothing found
Searching for Lion Worm default files and dirs... nothing found
Searching for RSHA's default files and dir... nothing found
Searching for RH-Sharpe's default files... nothing found
Searching for Ambient's rootkit (ark) default files and dirs... nothing found
Searching for suspicious files and dirs, it may take a while...
/usr/lib/vmware/perl5/site_perl/5.005/i386-linux/auto/XML/Parser/.packlist
/usr/lib/vmware/perl5/site_perl/5.005/i386-linux/auto/XML/DOM/.packlist
/usr/lib/vmware/perl5/site_perl/5.005/i386-linux/auto/URI/.packlist
/usr/lib/vmware/perl5/site_perl/5.005/i386-linux/auto/VMware/HConfig/.exists
/usr/lib/vmware/perl5/site_perl/5.005/i386-linux/auto/VMware/VmdbPerl/.exists
/usr/lib/vmware/perl5/site_perl/5.005/i386-linux/auto/VMware/VmPerl/.exists
/usr/lib/vmware/perl5/site_perl/5.005/i386-linux/auto/Authen/PAM/.packlist
/usr/lib/vmware/perl5/site_perl/5.005/i386-linux/auto/MIME/Base64/.packlist
/usr/lib/vmware/perl5/site_perl/5.005/i386-linux/VMware/.exists
/usr/lib/firefox/.autoreg
/usr/lib/jvm/java-6-sun-1.6.0.03/.systemPrefs
/usr/lib/jvm/.java-6-sun.jinfo
/usr/lib/jvm/java-1.5.0-sun-1.5.0.13/.systemPrefs
/usr/lib/jvm/.java-1.5.0-sun.jinfo
/lib/linux-restricted-modules/.nvidia_new_installed
/lib/modules/2.6.22-14-generic/volatile/.mounted
Searching for LPD Worm files and dirs... nothing found
Searching for Ramen Worm files and dirs... nothing found
Searching for Maniac files and dirs... nothing found
Searching for RK17 files and dirs... nothing found
Searching for Ducoci rootkit... nothing found
Searching for Adore Worm... nothing found
Searching for ShitC Worm... nothing found
Searching for Omega Worm... nothing found
Searching for Sadmind/IIS Worm... nothing found
Searching for MonKit... nothing found
Searching for Showtee... nothing found
Searching for OpticKit... nothing found
Searching for T.R.K... nothing found
Searching for Mithra... nothing found
Searching for OBSD rk v1... /usr/lib/security
/usr/lib/security/classpath.security
Searching for LOC rootkit... nothing found
Searching for Romanian rootkit... nothing found
Searching for Suckit rootkit... nothing found
Searching for Volc rootkit... nothing found
Searching for Gold2 rootkit... nothing found
Searching for TC2 Worm default files and dirs... nothing found
Searching for Anonoying rootkit default files and dirs... nothing found
Searching for ZK rootkit default files and dirs... nothing found
Searching for ShKit rootkit default files and dirs... nothing found
Searching for AjaKit rootkit default files and dirs... nothing found
Searching for zaRwT rootkit default files and dirs... nothing found
Searching for Madalin rootkit default files... nothing found
Searching for Fu rootkit default files... nothing found
Searching for ESRK rootkit default files... nothing found
Searching for rootedoor... nothing found
Searching for ENYELKM rootkit default files... nothing found
Searching for anomalies in shell history files... Warning: `' is linked to another file
Checking `asp'... not infected
Checking `bindshell'... not infected
Checking `lkm'... chkproc: nothing detected
Checking `rexedcs'... not found
Checking `sniffer'... lo: not promisc and no packet sniffer sockets
eth0: PACKET SNIFFER(/sbin/dhclient3[5364])
Checking `w55808'... not infected
Checking `wted'... chkwtmp: nothing deleted
Checking `scalper'... not infected
Checking `slapper'... not infected
Checking `z2'... user bio deleted or never logged from lastlog!
user root deleted or never logged from lastlog!


Il programma scansiona tutte le parti vulnerabili e attaccabili dai rookit, controlliamo che le risposte siano tutte negative.

Link sull’argomento

Rootkit su Wikipedia

Chkootkit su Wikipedia

Home Page Chkrootkit