{"id":8058,"date":"2025-06-01T09:51:24","date_gmt":"2025-06-01T07:51:24","guid":{"rendered":"https:\/\/milchyn.cz\/?page_id=8058"},"modified":"2025-09-22T10:45:49","modified_gmt":"2025-09-22T10:45:49","slug":"antiviry","status":"publish","type":"page","link":"https:\/\/milchyn.cz\/antiviry","title":{"rendered":"Antiviry"},"content":{"rendered":"<p>Linux je sice obecn\u011b v\u016f\u010di vir\u016fm odoln\u011bj\u0161\u00ed ne\u017e Windows, ale nikoli nezraniteln\u00fd. Odolnost vych\u00e1z\u00ed z jeho architektury, zp\u016fsobu spr\u00e1vy u\u017eivatelsk\u00fdch pr\u00e1v a v\u00fdvoje open-source softwaru. V\u00fdznam antiviru na Linuxu je p\u0159edev\u0161\u00edm v prevenci, aby se nezan\u00e1\u0161el infikovan\u00fdmi soubory a ne\u0161\u00ed\u0159il je d\u00e1l. Av\u0161ak antivirov\u00e9 skenov\u00e1n\u00ed do jist\u00e9 m\u00edry zat\u011b\u017euje syst\u00e9m \u2014 p\u0159edev\u0161\u00edm procesor a disk.<\/p>\n<p>P\u0159ehled n\u011bkolika antivir\u016f:<\/p>\n<ul>\n<li><a href=\"https:\/\/www.clamav.net\/about\" target=\"_blank\" rel=\"noopener\">clamAv<\/a> \u00a0&#8211; open-source voln\u011b dostupn\u00fd antivir s aktivn\u00edm v\u00fdvojem, instalovateln\u00e9 p\u0159\u00edmo z repozit\u00e1\u0159\u016f dan\u00fdch distribuc\u00ed<\/li>\n<li><a href=\"https:\/\/www.comodo.com\/home\/internet-security\/antivirus-for-linux.php\" target=\"_blank\" rel=\"noopener\">Comodo<\/a> &#8211; ov\u011b\u0159it si podporu nov\u00fdch verz\u00ed Linux\u016f<\/li>\n<li><a href=\"https:\/\/www.avast.com\/business\/products\/linux-antivirus#pc\" target=\"_blank\" rel=\"noopener\">Avast<\/a> &#8211; komer\u010dn\u00ed s aktivn\u00edm v\u00fdvojem,\u00a0\u00a0<a href=\"https:\/\/repo.avcdn.net\/linux-av\/doc\/avast-techdoc.pdf\" target=\"_blank\" rel=\"noopener\">podporuj\u00edc\u00ed i nov\u00e9 verze Linux\u016f<\/a>, ur\u010den\u00fd p\u0159edev\u0161\u00edm pro firemn\u00ed nasazen\u00ed<\/li>\n<\/ul>\n<hr \/>\n<a id=\"clamav\"><\/a><div class=\"mch-acr\"><div class=\"mch-acr-title\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"mch-acr-content-6\">clamAv<\/div><div id=\"mch-acr-content-6\" class=\"mch-acr-content\" hidden><\/p>\n<p><a href=\"https:\/\/www.clamav.net\/about\" target=\"_blank\" rel=\"noopener\">ClamAV<\/a> je voln\u011b dostupn\u00e1 open-source antivirov\u00e1 aplikace spravovan\u00e1 komunitou. Umo\u017e\u0148uje si vytvo\u0159it vlastn\u00ed styl antivirov\u00e9ho skenov\u00e1n\u00ed a \u010dasov\u00e9ho napl\u00e1nov\u00e1n\u00ed. Samoz\u0159ejm\u011b s p\u0159ihl\u00e9dnut\u00edm na z\u00e1t\u011b\u017e syst\u00e9mu p\u0159i skenov\u00e1n\u00ed. Z\u00e1rove\u0148 umo\u017e\u0148uje u\u017eivatel\u016fm individu\u00e1ln\u011b oskenovat si data, ke kter\u00fdm maj\u00ed p\u0159\u00edstupov\u00e1 pr\u00e1va a to pomoc\u00ed p\u0159\u00edkazov\u00e9 \u0159\u00e1dky nebo grafick\u00e9ho rozhran\u00ed. Antivirov\u00e1 datab\u00e1ze se aktualizuje automaticky.<\/p>\n<p><a href=\"https:\/\/www.clamav.net\/about\" target=\"_blank\" rel=\"noopener\">Clamav<\/a> je modul\u00e1rn\u00ed a m\u00e1 dva z\u00e1kladn\u00ed druhy skenov\u00e1n\u00ed:<\/p>\n<ul>\n<li><strong>bez slu\u017eby<\/strong><em> (standalone m\u00f3d)<\/em>\n<ul>\n<li>ob\u010dasn\u00e9 oskenov\u00e1n\u00ed u\u017eivatelsk\u00e9ho adres\u00e1\u0159e z p\u0159\u00edkazov\u00e9 \u0159\u00e1dky nebo z grafick\u00e9ho rozhran\u00ed <code>clamtk<\/code><\/li>\n<li>pomalej\u0161\u00ed skenov\u00e1n\u00ed ne\u017e slu\u017ebou <code>clamd\u00a0<\/code><\/li>\n<li>nepot\u0159ebuje slu\u017ebu <code data-start=&#8220;310&#8243; data-end=&#8220;317&#8243;>clamd<\/code><\/li>\n<\/ul>\n<\/li>\n<li><strong>jako slu\u017eba<\/strong> (<code>clamd<\/code>)\n<ul>\n<li>\u010dast\u00e9 skenov\u00e1n\u00ed v\u011bt\u0161\u00edho objemu dat<\/li>\n<li>rychlej\u0161\u00ed skenov\u00e1n\u00ed ne\u017e bez slu\u017eby<\/li>\n<li>po\u017eadavky na skenov\u00e1n\u00ed adres\u00e1\u0159\u016f nebo od mail serveru, webov\u00e9ho proxy apod. p\u0159eb\u00edr\u00e1 p\u0159es sockety<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>\u261d\ufe0f<\/strong> Po p\u0159eru\u0161en\u00ed <code>clamscan<\/code> a <code>clamdscan<\/code> se <strong>nenav\u00e1\u017ee<\/strong>, po spu\u0161t\u011bn\u00ed za\u010dne skenov\u00e1n\u00ed od znova.<\/p>\n<p><strong>\u261d\ufe0f<\/strong> Pozor na <strong>limituj\u00edc\u00ed pr\u00e1va<\/strong> k soubor\u016fm a slo\u017ek\u00e1m u\u017eivatele, pod kter\u00fdm skenov\u00e1n\u00ed b\u011b\u017e\u00ed.<\/p>\n<p><\/div><\/div>\n<a id=\"clamav_daemon_slu\u017eba_clamd\"><\/a><div class=\"mch-acr\"><div class=\"mch-acr-title\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"mch-acr-content-7\">clamav-daemon - slu\u017eba clamd<\/div><div id=\"mch-acr-content-7\" class=\"mch-acr-content\" hidden><\/p>\n<p>clamd je na pozad\u00ed b\u011b\u017e\u00edc\u00ed slu\u017eba, kter\u00e1 \u010dek\u00e1 na p\u0159\u00edkazy od klienta p\u0159es Unix Socket nebo TCP socket. Samotn\u00fd clamd tedy nev\u00ed, co m\u00e1 skenovat, dokud mu to n\u011bkdo ne\u0159ekne.<\/p>\n<p>\ud83d\udca1 Po\u017eadavek z p\u0159\u00edkazu\u00a0 <code data-start=&#8220;613&#8243; data-end=&#8220;624&#8243;>clamdscan<\/code> se p\u0159eb\u00edr\u00e1 p\u0159es Unix Socket <em>(Local Socket)<\/em> nebo TCP Socket.<\/p>\n<p>\ud83d\udca1 Extern\u00ed po\u017eadavky od mail serveru, webov\u00e9ho proxy apod. se p\u0159eb\u00edraj\u00ed p\u0159es TCP Sockety.<\/p>\n<p><strong>\u261d\ufe0f<\/strong> <code>clamd<\/code> skenuje s p\u0159\u00edstupov\u00fdmi pr\u00e1vy u\u017eivatele, nadefinovan\u00e9ho v <code>\/etc\/clamav\/clamd.conf<\/code> , standardn\u011b &#8222;clamav&#8220;.<\/p>\n<p>\ud83d\ude0e <strong>koncept pro m\u00e9 po\u017eadavky:<\/strong><\/p>\n<ul style=\"list-style-type: square\">\n<li>skenov\u00e1n\u00ed soubor\u016f a slo\u017eek nap\u0159\u00ed\u010d po\u010d\u00edta\u010dem<\/li>\n<li>pouze lok\u00e1ln\u011b, pomoc\u00ed <code>clamdscan<\/code><\/li>\n<li>jak ru\u010dn\u011b spou\u0161t\u011bn\u00e9 tak pl\u00e1novan\u00e9 cronem<\/li>\n<\/ul>\n<h5>Instalace:<\/h5>\n<p>\ud83d\udca1 Instalace je mo\u017en\u00e1 i z ofici\u00e1ln\u00edch str\u00e1nek <a href=\"https:\/\/www.clamav.net\/downloads\" target=\"_blank\" rel=\"noopener\">clamAv<\/a> obsahuj\u00edc\u00ed instala\u010dn\u00ed soubor a pokyny.<\/p>\n<p>\ud83d\ude0e Vol\u00edm instalaci z repozit\u00e1\u0159\u016f na Xubuntu 24.04.<\/p>\n<p>\ud83d\udcbb <code>sudo apt install clamav-daemon<\/code><\/p>\n<p>Automaticky se doinstaluj\u00ed bal\u00ed\u010dky:<\/p>\n<ul>\n<li><code>clamav<\/code> \u2013 pro skenovan\u00ed v r\u00e1mci u\u017eivatele p\u0159\u00edkazem <code>clamscan<\/code><\/li>\n<li><code>clamav-base<\/code> \u2013 z\u00e1klad<\/li>\n<li><code>clamav-daemon<\/code> \u2013 slu\u017eba <code>clamd<\/code>, \u010dekaj\u00edc\u00ed na skenovac\u00ed p\u0159\u00edkazy nap\u0159\u00edklad od <code>clamdscan<\/code> nebo odjinud<\/li>\n<li><code>clamav-freshclam<\/code> \u2013 slu\u017eba <code data-start=&#8220;705&#8243; data-end=&#8220;716&#8243;>freshclam<\/code>, automaticky aktualizuj\u00edc\u00ed antivirovou datab\u00e1zi<\/li>\n<li><code>libclamav11t64<\/code> \u2013 knihovny<\/li>\n<\/ul>\n<p>Slu\u017eby:<\/p>\n<ul>\n<li><code>clamav-daemon.service<\/code> \u2013 systemd jednotka, pro start, stop slu\u017eby <code>clamd<\/code><\/li>\n<li><code>clamav-freshclam.service<\/code> \u2013 systemd jednotka, pro start, stop slu\u017eby <code data-start=&#8220;705&#8243; data-end=&#8220;716&#8243;>freshclam<\/code><code data-start=&#8220;705&#8243; data-end=&#8220;716&#8243;><\/code><\/li>\n<\/ul>\n<h5>Nastaven\u00ed slu\u017eeb:<\/h5>\n<p>\u261d\ufe0f Pro skenov\u00e1n\u00ed soubor\u016f v\u0161ech u\u017eivatel\u016f, se mus\u00ed slu\u017eb\u011b ud\u011blit nejvy\u0161\u0161\u00ed p\u0159\u00edstupov\u00e1 pr\u00e1va, ale z\u00e1rove\u0148 zamezit p\u0159\u00edstupu v\u0161em ostatn\u00edm.<\/p>\n<p>\ud83d\udcbb <code>sudo cp -p \/etc\/clamav\/clamd.conf \/etc\/clamav\/clamd.conf.orig<\/code><\/p>\n<p># editace<br \/>\nsudo mousepad \/etc\/clamav\/clamd.conf<\/p>\n<table style=\"width: 100%;height: 138px\">\n<tbody>\n<tr style=\"height: 23px\">\n<td style=\"height: 23px\"><code>User<\/code><\/td>\n<td style=\"height: 23px\"><strong>root<\/strong><\/td>\n<td style=\"height: 23px\">\ud83d\udc49 pro skenov\u00e1n\u00ed v\u0161ech soubor\u016f nap\u0159\u00ed\u010d u\u017eivatel\u016f<\/td>\n<\/tr>\n<tr style=\"height: 23px\">\n<td style=\"height: 23px\"><code>LocalSocketGroup<\/code><\/td>\n<td style=\"height: 23px\"><strong>clamav<\/strong><\/td>\n<td style=\"height: 23px\">\ud83d\udc49 u\u017eivatelsk\u00e1 skupina pro socket<\/td>\n<\/tr>\n<tr style=\"height: 23px\">\n<td style=\"height: 23px\"><code>LocalSocketMode<\/code><\/td>\n<td style=\"height: 23px\"><strong>660<\/strong><\/td>\n<td style=\"height: 23px\">\ud83d\udc49 pr\u00e1va u\u017eivateli <code>root<\/code> skenovat a skupin\u011b <code>clamav<\/code> spou\u0161t\u011bt, prohl\u00ed\u017eet logy<\/td>\n<\/tr>\n<tr style=\"height: 23px\">\n<td style=\"height: 23px\"><code>LocalSocket<\/code><\/td>\n<td style=\"height: 23px\"><strong>\/run\/clamav\/clamd.ctl<\/strong><\/td>\n<td style=\"height: 23px\">\ud83d\udc49 Unix socket<\/td>\n<\/tr>\n<tr style=\"height: 23px\">\n<td style=\"height: 23px\"><code>TCPSocket<\/code><\/td>\n<td style=\"height: 23px\"><strong>0<\/strong><\/td>\n<td style=\"height: 23px\">\ud83d\udc49 zak\u00e1z\u00e1n\u00ed TCP sockeku <em>(chyb\u00ed-li tento parametr, tak ho p\u0159idat)<\/em><\/td>\n<\/tr>\n<tr style=\"height: 23px\">\n<td style=\"height: 23px\"><code>DetectPUA<\/code><\/td>\n<td style=\"height: 23px\"><strong>true<\/strong><\/td>\n<td style=\"height: 23px\">\ud83d\udc49 detekce pouze potenci\u00e1ln\u011b ne\u017e\u00e1douc\u00edch aplikac\u00ed, nejde o skute\u010dn\u00e9 viry<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u261d\ufe0f<\/strong> Z\u00e1rove\u0148 zamezit p\u0159\u00edstupu v\u0161em ostatn\u00edm v nastaven\u00ed Socketu.<\/p>\n<p>\ud83d\udcbb <code>sudo cp -p \/usr\/lib\/systemd\/system\/clamav-daemon.socket \/usr\/lib\/systemd\/system\/clamav-daemon.socket.orig<\/code><\/p>\n<p># editace<br \/>\nsudo mousepad \/usr\/lib\/systemd\/system\/clamav-daemon.socket<\/p>\n<table style=\"border-collapse: collapse;width: 100%;height: 132px\">\n<tbody>\n<tr style=\"height: 22px\">\n<td style=\"width: 31.7636%;height: 22px\"><code>[Socket]<\/code><\/td>\n<td style=\"width: 68.2364%;height: 22px\"><\/td>\n<\/tr>\n<tr style=\"height: 22px\">\n<td style=\"width: 31.7636%;height: 22px\"><code>ListenStream=\/run\/clamav\/clamd.ctl<\/code><\/td>\n<td style=\"width: 68.2364%;height: 22px\">\ud83d\udc49 slu\u017eba clamd vytvo\u0159\u00ed na t\u00e9to cest\u011b Unix socket <em>(TCP socket t\u00edmto vypnut)<\/em><\/td>\n<\/tr>\n<tr style=\"height: 22px\">\n<td style=\"width: 31.7636%;height: 22px\"><code>SocketUser=root<\/code><\/td>\n<td style=\"width: 68.2364%;height: 22px\">\ud83d\udc49 Unix socket bude vlastn\u011bn u\u017eivatelem <code data-start=&#8220;1038&#8243; data-end=&#8220;1044&#8243;>root<\/code><\/td>\n<\/tr>\n<tr style=\"height: 22px\">\n<td style=\"width: 31.7636%;height: 22px\"><code>SocketGroup=clamav<\/code><\/td>\n<td style=\"width: 68.2364%;height: 22px\">\ud83d\udc49 Unix socket bude ve skupin\u011b <code data-start=&#8220;1147&#8243; data-end=&#8220;1155&#8243;>clamav<\/code><\/td>\n<\/tr>\n<tr style=\"height: 22px\">\n<td style=\"width: 31.7636%;height: 22px\"><code>SocketMode=0660<\/code><\/td>\n<td style=\"width: 68.2364%;height: 22px\">\ud83d\udc49 pouze u\u017eivatel a skupina mohou \u010d\u00edst i zapisovat<\/td>\n<\/tr>\n<tr style=\"height: 22px\">\n<td style=\"width: 31.7636%;height: 22px\"><code>RemoveOnStop=True<\/code><\/td>\n<td style=\"width: 68.2364%;height: 22px\">\ud83d\udc49 Unix socket bude po zastaven\u00ed slu\u017eby odstran\u011bn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5><\/h5>\n<h5>Zanesen\u00ed zm\u011bn do syst\u00e9mu:<\/h5>\n<p>\ud83d\udcbb <code>sudo systemctl daemon-reload<\/code><\/p>\n<p>\ud83d\udcbb <code>sudo systemctl restart clamav-daemon.service<\/code><\/p>\n<p>\ud83d\udcbb <code>sudo systemctl<\/code><\/p>\n<p>\ud83d\udcbb <code>restart clamav-daemon.socket<\/code><\/p>\n<h5>Kontrola nastaven\u00ed slu\u017eeb:<\/h5>\n<p>\ud83d\udca1 P\u0159idan\u00fd nepovinn\u00fd parametr <code>--no-pager<\/code> jen vypne str\u00e1nkovac\u00ed zobrazen\u00ed, ukon\u010duj\u00edc\u00ed se jinak kl\u00e1vesou &#8218;q&#8216;.<\/p>\n<p>\ud83d\udcbb <code>sudo systemctl status clamav-daemon.service --no-pager<\/code><\/p>\n<h5><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8257 alignnone\" src=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamav-daemon.service__STATUS-e1749284502605.png\" alt=\"\" width=\"550\" height=\"200\" srcset=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamav-daemon.service__STATUS-e1749284502605.png 550w, https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamav-daemon.service__STATUS-e1749284502605-300x109.png 300w\" sizes=\"auto, (max-width: 550px) 100vw, 550px\" \/><\/h5>\n<p>\ud83d\udcbb <code>sudo systemctl status clamav-daemon.socket --no-pager<\/code><\/p>\n<h5><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8258 alignnone\" src=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamav-daemon.socket__STATUS-e1749284679613.png\" alt=\"\" width=\"540\" height=\"200\" srcset=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamav-daemon.socket__STATUS-e1749284679613.png 540w, https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamav-daemon.socket__STATUS-e1749284679613-300x111.png 300w\" sizes=\"auto, (max-width: 540px) 100vw, 540px\" \/><\/h5>\n<p>\ud83d\udcbb <code>sudo ls -l \/run\/clamav\/clamd.ctl<\/code><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamd.ctl__STATUS-e1749284812365.png\" alt=\"\" width=\"455\" height=\"50\" \/><\/p>\n<p>\ud83d\udcbb <code>sudo systemctl status clamav-freshclam.service --no-pager<\/code><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8259 alignnone\" src=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamav-freshclam.service__STATUS-e1749284902682.png\" alt=\"\" width=\"566\" height=\"200\" srcset=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamav-freshclam.service__STATUS-e1749284902682.png 566w, https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamav-freshclam.service__STATUS-e1749284902682-300x106.png 300w\" sizes=\"auto, (max-width: 566px) 100vw, 566px\" \/><\/p>\n<h5>P\u0159id\u00e1n\u00ed u\u017eivatele do skupiny clamav:<\/h5>\n<p>\ud83d\udca1 Aby mohl u\u017eivatel spou\u0161t\u011bt antivirov\u00e9 skenov\u00e1n\u00ed p\u0159es slu\u017ebu <code>clamd<\/code> nebo prohl\u00ed\u017eel jej\u00ed logy, mus\u00ed b\u00fdt ve skupin\u011b <code>clamav<\/code>.<\/p>\n<p>\ud83d\udc49 P\u0159\u00edklad p\u0159id\u00e1n\u00ed u\u017eivatele <code>spravce<\/code> do skupiny <code>clamav<\/code> a kontrola akce.<\/p>\n<p>\ud83d\udcbb <code>sudo usermod -aG clamav spravce<\/code><\/p>\n<p>\ud83d\udcbb <code>sudo getent group clamav<\/code><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8263 alignnone\" src=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/group-clamav-spravce__SET-e1749286799467.png\" alt=\"\" width=\"329\" height=\"70\" srcset=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/group-clamav-spravce__SET-e1749286799467.png 329w, https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/group-clamav-spravce__SET-e1749286799467-300x64.png 300w\" sizes=\"auto, (max-width: 329px) 100vw, 329px\" \/><br \/>\n\u26a0\ufe0f Zm\u011bna se projev\u00ed a\u017e po odhl\u00e1\u0161en\u00ed a op\u011btovn\u00e9m p\u0159ihl\u00e1\u0161en\u00ed u\u017eivatele.<\/p>\n<h5>P\u0159\u00edklad skenov\u00e1n\u00ed adres\u00e1\u0159e:<\/h5>\n<p>\ud83d\udcbb <code>\/usr\/bin\/clamdscan ~\/Dokumenty<\/code><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8309 alignnone\" src=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamdscan-dokumenty__STATUS-e1749319636918.png\" alt=\"\" width=\"280\" height=\"155\" \/><\/p>\n<p>\ud83d\udca1 Tento <code>clamdscan<\/code> slu\u017edou <code>clamd<\/code> byl p\u0159ibli\u017en\u011b 2 kr\u00e1t rychlej\u0161\u00ed ne\u017e v p\u0159\u00edkladu <code>clamscan<\/code> bey slu\u017eby.<\/p>\n<p><\/div><\/div>\n<a id=\"clamav_freshclam_slu\u017eba_freshclam\"><\/a><div class=\"mch-acr\"><div class=\"mch-acr-title\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"mch-acr-content-8\">clamav-freshclam - slu\u017eba freshclam<\/div><div id=\"mch-acr-content-8\" class=\"mch-acr-content\" hidden><\/p>\n<p>Slu\u017eba, kter\u00e1 automaticky aktualizuje aintivirovou datab\u00e1zi.<\/p>\n<h5>Instalace:<\/h5>\n<p>\ud83d\udca1 Instalace je mo\u017en\u00e1 i z ofici\u00e1ln\u00edch str\u00e1nek <a href=\"https:\/\/www.clamav.net\/downloads\" target=\"_blank\" rel=\"noopener\">clamAv<\/a> obsahuj\u00edc\u00ed instala\u010dn\u00ed soubor a pokyny.<\/p>\n<p>\ud83d\ude0e Vol\u00edm instalaci z repozit\u00e1\u0159\u016f na Xubuntu 24.04.<\/p>\n<p>\ud83d\udcbb <code>sudo apt install clamav-freshclam<\/code><\/p>\n<p>Automaticky se doinstaluj\u00ed bal\u00ed\u010dky:<\/p>\n<ul>\n<li><code>clamav<\/code> \u2013 pro skenovan\u00ed v r\u00e1mci u\u017eivatele p\u0159\u00edkazem <code>clamscan<\/code><code><\/code><\/li>\n<li><code>clamav-base<\/code> \u2013 z\u00e1klad<\/li>\n<li><code>libclamav11t64<\/code> \u2013 knihovny<\/li>\n<\/ul>\n<p>Slu\u017eba:<\/p>\n<ul>\n<li><code>clamav-freshclam.service<\/code> \u2013 systemd jednotka, pro start, stop slu\u017eby <code data-start=&#8220;705&#8243; data-end=&#8220;716&#8243;>freshclam<\/code><code data-start=&#8220;705&#8243; data-end=&#8220;716&#8243;><\/code><\/li>\n<\/ul>\n<h5>Editace nastaven\u00ed:<\/h5>\n<p>\ud83d\udcbb <code>sudo mousepad \/etc\/clamav\/freshclam.conf<\/code><\/p>\n<p><\/div><\/div>\n<a id=\"clamav_skenov\u00e1n\u00ed_p\u0159\u00edkazem_clamscan\"><\/a><div class=\"mch-acr\"><div class=\"mch-acr-title\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"mch-acr-content-9\">clamav - skenov\u00e1n\u00ed p\u0159\u00edkazem clamscan<\/div><div id=\"mch-acr-content-9\" class=\"mch-acr-content\" hidden><\/p>\n<p>U\u017eivatel m\u016f\u017ee p\u0159\u00edkazem <code>clamscan<\/code> spustit antivirovou kontrolu soubor\u016f a slo\u017eek, ke kter\u00fdm m\u00e1 p\u0159\u00edstup alespo\u0148 pro \u010dten\u00ed.<\/p>\n<p>U\u017eivatel m\u00e1 mo\u017enost p\u0159\u00edkazem oskenovat soubory na viry, ke kter\u00fdm m\u00e1 pr\u00e1va alespo\u0148 pro \u010dten\u00ed. Nastaven\u00ed, co a jak se skenuje nebo zaznamen\u00e1v\u00e1 do log z\u00e1znamu, se \u0159\u00edd\u00ed parametry p\u0159\u00edkazu.<\/p>\n<p>\ud83d\udca1 V\u00fdsledek skenov\u00e1n\u00ed se zobraz\u00ed v termin\u00e1lu, nebo m\u016f\u017ee b\u00fdt p\u0159esm\u011brov\u00e1n do logovac\u00edho souboru.<\/p>\n<p>\ud83d\udca1 P\u0159i b\u011b\u017e\u00edc\u00ed slu\u017eb\u011b <code>clamav-freshclam.service<\/code> automatick\u00e9 aktualizace antivirov\u00e9 datab\u00e1ze, nelze vykonat ru\u010dn\u00ed aktualizaci <code>sudo freshclam<\/code>\u00a0.<\/p>\n<p>\u26a0\ufe0f Skenov\u00e1n\u00ed je pouze s pr\u00e1vy u\u017eivetele, pod kter\u00fdm je p\u0159\u00edkaz <code>clamscan<\/code> spu\u0161t\u011bn. Tam kam nem\u00e1 p\u0159\u00edstup, hl\u00e1s\u00ed chybu.<\/p>\n<p>\ud83d\udca1 Pro pr\u00e1va skenov\u00e1n\u00ed v\u0161eho lze\u00a0pou\u017e\u00edt <code>sudo \/usr\/bin\/clamscan<\/code> a k p\u0159edejit\u00ed podsunut\u00ed aliasu, tak s cestou k p\u0159\u00edkazu.<\/p>\n<h5>Instalace:<\/h5>\n<p>\ud83d\udca1 Instalace je mo\u017en\u00e1 i z ofici\u00e1ln\u00edch str\u00e1nek <a href=\"https:\/\/www.clamav.net\/downloads\" target=\"_blank\" rel=\"noopener\">clamAv<\/a> obsahuj\u00edc\u00ed instala\u010dn\u00ed soubor a pokyny.<\/p>\n<p>\ud83d\ude0e Vol\u00edm instalaci z repozit\u00e1\u0159\u016f na Xubuntu 24.04.<\/p>\n<p>\ud83d\udcbb <code>sudo apt install clamav<\/code><\/p>\n<p>Automaticky se doinstaluj\u00ed bal\u00ed\u010dky:<\/p>\n<ul>\n<li><code>clamav-base<\/code> \u2013 z\u00e1klad<\/li>\n<li><code>clamav-freshclam<\/code> \u2013 slu\u017eba <code data-start=&#8220;705&#8243; data-end=&#8220;716&#8243;>freshclam<\/code>, automaticky aktualizuj\u00edc\u00ed antivirovou datab\u00e1zi<\/li>\n<li><code>libclamav11t64<\/code> \u2013 knihovny<\/li>\n<\/ul>\n<p>Slu\u017eba:<\/p>\n<ul>\n<li><code>clamav-freshclam.service<\/code> \u2013 systemd jednotka, pro start, stop slu\u017eby <code data-start=&#8220;705&#8243; data-end=&#8220;716&#8243;>freshclam<\/code><code data-start=&#8220;705&#8243; data-end=&#8220;716&#8243;><\/code><\/li>\n<\/ul>\n<h5>Skenov\u00e1n\u00ed soubor\u016f a slo\u017eek, v\u010detn\u011b vno\u0159en\u00fdch, s podrobn\u00fdm z\u00e1znamem do logovac\u00edho souboru:<\/h5>\n<p>\ud83d\udcbb <code>\/usr\/bin\/clamscan -r --detect-pua=yes \/adres\u00e1\u0159_k_oskenovan\u00ed &amp;gt;\/cesta\/clamscan.log 2&amp;gt;&amp;amp;1<\/code><\/p>\n<h5>Stejn\u00e9 skenov\u00e1n\u00ed, ale bez zaznamen\u00e1v\u00e1n\u00ed &#8222;OK&#8220; soubor\u016f do logu:<\/h5>\n<p>\ud83d\udcbb <code>\/usr\/bin\/clamscan -r --suppress-ok-results --detect-pua=yes \/adres\u00e1\u0159_k_oskenovan\u00ed &amp;gt;\/cesta\/clamscan.log 2&amp;gt;&amp;amp;1<\/code><\/p>\n<p>Zkr\u00e1cen\u011b:<\/p>\n<p>\ud83d\udcbb <code>\/usr\/bin\/clamscan -r -o --detect-pua=yes \/adres\u00e1\u0159_k_oskenovan\u00ed &amp;gt;\/cesta\/clamscan.log 2&amp;gt;&amp;amp;1<\/code><\/p>\n<h5>Stejn\u00e9 skenov\u00e1n\u00ed, ale do logu zaznamen\u00e1vaj\u00edc\u00ed pouze infikovan\u00e9, podez\u0159el\u00e9 soubory a sum\u00e1rn\u00ed zpr\u00e1vu:<\/h5>\n<p>\ud83d\udcbb <code>\/usr\/bin\/clamscan -r --infected --detect-pua=yes \/adres\u00e1\u0159_k_oskenovan\u00ed &amp;gt;\/cesta\/clamscan.log 2&amp;gt;&amp;amp;1<\/code><\/p>\n<p>zkr\u00e1cen\u011b<\/p>\n<p>\ud83d\udcbb <code>\/usr\/bin\/clamscan -r -i --detect-pua=yes \/adres\u00e1\u0159_k_oskenovan\u00ed &amp;gt;\/cesta\/clamscan.log 2&amp;gt;&amp;amp;1<\/code><\/p>\n<h5>Zobrazen\u00ed z logu pouze z\u00e1znam\u016f o infikovan\u00fdch a podez\u0159el\u00fdch souborech:<\/h5>\n<p>\ud83d\udcbb <code>grep -E &#039;Heuristic|PUA|Phishing|Suspicious&#039; \/cesta\/clamscan.log<\/code><\/p>\n<h5>P\u0159\u00edklad skenov\u00e1n\u00ed adres\u00e1\u0159e:<\/h5>\n<p>\ud83d\udcbb <code>clamscan ~\/Dokumenty<\/code><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8274 alignnone\" src=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamscan-dokumenty__STATUS-e1749306045314.png\" alt=\"\" width=\"507\" height=\"255\" srcset=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamscan-dokumenty__STATUS-e1749306045314.png 507w, https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/06\/clamscan-dokumenty__STATUS-e1749306045314-300x151.png 300w\" sizes=\"auto, (max-width: 507px) 100vw, 507px\" \/><\/p>\n<p>\ud83d\udca1 Tento <code>clamscan<\/code> byl p\u0159ibli\u017en\u011b 2 kr\u00e1t pomalej\u0161\u00ed ne\u017e v p\u0159\u00edkladu <code>clamdscan<\/code> p\u0159es slu\u017ebu <code>clamd<\/code>.<\/p>\n<p><\/div><\/div>\n<a id=\"clamtk_skenov\u00e1n\u00ed_v_grafick\u00e9m_rozhran\u00ed\"><\/a><div class=\"mch-acr\"><div class=\"mch-acr-title\" role=\"button\" tabindex=\"0\" aria-expanded=\"false\" aria-controls=\"mch-acr-content-10\">ClamTk - skenov\u00e1n\u00ed v grafick\u00e9m rozhran\u00ed<\/div><div id=\"mch-acr-content-10\" class=\"mch-acr-content\" hidden><\/p>\n<p>D\u00e1v\u00e1 u\u017eivateli mo\u017enost vlastn\u00ed spr\u00e1vy antivirov\u00e9ho skenov\u00e1n\u00ed sv\u00fdch dat.<\/p>\n<p>\ud83d\ude0e Grafick\u00e9 rozhran\u00ed moc nepou\u017e\u00edv\u00e1m, tak o n\u011bm jen obecn\u011bji.<\/p>\n<p>\ud83d\udca1 Nastaven\u00ed se vztahuje pouze pro aktu\u00e1ln\u00edho u\u017eivatele, ulo\u017een\u00e9 v adres\u00e1\u0159i <code>~\/.clamtk\/<\/code> .<\/p>\n<p>\ud83d\udca1 Glob\u00e1ln\u00ed nastaven\u00ed pro slu\u017ebu clamav-daemon zde neplat\u00ed.<\/p>\n<p>\ud83d\udca1 Na infikovan\u00e9 soubory pouze upozorn\u00ed v okn\u011b &#8222;Karant\u00e9na&#8220; a nab\u00eddne jejich smaz\u00e1n\u00ed.<\/p>\n<p>\u26a0\ufe0f Soubory, ke kter\u00fdm nem\u00e1 antivirov\u00fd skener pr\u00e1va alespo\u0148 pro \u010dten\u00ed, jsou ignorov\u00e1ny.<\/p>\n<p>\u26a0\ufe0f Z &#8222;Karant\u00e9ny&#8220; nejdou smazat infikovan\u00e9 soubory, ke kter\u00fdm u\u017eivatel nem\u00e1 pr\u00e1vo k z\u00e1pisu.<\/p>\n<p>\u26a0\ufe0f Sporn\u00e1 funk\u010dnost &#8222;Heuristic&#8220; <em>(\u201eMo\u017en\u00e9 hrozby\u201c)<\/em><\/p>\n<h5>Instalace:<\/h5>\n<p>\ud83d\udca1 Instalace je mo\u017en\u00e1 i z ofici\u00e1ln\u00edch str\u00e1nek <a href=\"https:\/\/www.clamav.net\/downloads\" target=\"_blank\" rel=\"noopener\">clamAv<\/a> obsahuj\u00edc\u00ed instala\u010dn\u00ed soubor a pokyny.<\/p>\n<p>\ud83d\ude0e Vol\u00edm instalaci z repozit\u00e1\u0159\u016f na Xubuntu 24.04.<\/p>\n<p>\ud83d\udcbb <code>sudo apt install clamtk<\/code><\/p>\n<p>Automaticky se doinstaluj\u00ed bal\u00ed\u010dky:<\/p>\n<ul>\n<li><code>clamav<\/code> \u2013 pro skenovan\u00ed v r\u00e1mci u\u017eivatele p\u0159\u00edkazem <code>clamscan<\/code><\/li>\n<li><code>clamav-base<\/code> \u2013 z\u00e1klad<\/li>\n<li><code>clamav-freshclam<\/code> \u2013 slu\u017eba <code data-start=&#8220;705&#8243; data-end=&#8220;716&#8243;>freshclam<\/code>, automaticky aktualizuj\u00edc\u00ed antivirovou datab\u00e1zi<\/li>\n<li><code>libclamav11t64<\/code> \u2013<\/li>\n<\/ul>\n<p>Slu\u017eby:<\/p>\n<ul>\n<li><code>clamav-freshclam.service<\/code> \u2013 systemd jednotka, pro start, stop slu\u017eby <code data-start=&#8220;705&#8243; data-end=&#8220;716&#8243;>freshclam<\/code><code data-start=&#8220;705&#8243; data-end=&#8220;716&#8243;><\/code><\/li>\n<\/ul>\n<h5>Spu\u0161t\u011bn\u00ed:<\/h5>\n<p>\ud83d\udcbb <code>clamtk<\/code><\/p>\n<p>\ud83c\udfc1 V Desktopov\u00e9m prost\u0159ed\u00ed lze spustit z\u00e1stupcem <code>Clamtk<\/code><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8030 alignleft\" src=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/05\/clamtk-gui-e1748682878249.png\" alt=\"\" width=\"300\" height=\"289\" \/>\u00a0 \u00a0 <img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8036 alignleft\" src=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/05\/clamtk-gui-aktualizace-e1748683931531.png\" alt=\"\" width=\"300\" height=\"286\" \/><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-8029 alignnone\" src=\"https:\/\/milchyn.cz\/wp-content\/uploads\/2025\/05\/clamtk-gui-settings-e1748682897772.png\" alt=\"\" width=\"300\" height=\"287\" \/><\/p>\n<p><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Linux je sice obecn\u011b v\u016f\u010di vir\u016fm odoln\u011bj\u0161\u00ed ne\u017e Windows, ale nikoli nezraniteln\u00fd. Odolnost vych\u00e1z\u00ed z jeho architektury, zp\u016fsobu spr\u00e1vy u\u017eivatelsk\u00fdch pr\u00e1v a v\u00fdvoje open-source softwaru. V\u00fdznam antiviru na Linuxu je p\u0159edev\u0161\u00edm v prevenci, aby se nezan\u00e1\u0161el infikovan\u00fdmi soubory a ne\u0161\u00ed\u0159il je d\u00e1l. Av\u0161ak antivirov\u00e9 skenov\u00e1n\u00ed do jist\u00e9 m\u00edry zat\u011b\u017euje syst\u00e9m \u2014 p\u0159edev\u0161\u00edm procesor a disk. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":6311,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-8058","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Antiviry - milchyn.cz<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/milchyn.cz\/antiviry\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Antiviry - milchyn.cz\" \/>\n<meta property=\"og:description\" content=\"Linux je sice obecn\u011b v\u016f\u010di vir\u016fm odoln\u011bj\u0161\u00ed ne\u017e Windows, ale nikoli nezraniteln\u00fd. Odolnost vych\u00e1z\u00ed z jeho architektury, zp\u016fsobu spr\u00e1vy u\u017eivatelsk\u00fdch pr\u00e1v a v\u00fdvoje open-source softwaru. V\u00fdznam antiviru na Linuxu je p\u0159edev\u0161\u00edm v prevenci, aby se nezan\u00e1\u0161el infikovan\u00fdmi soubory a ne\u0161\u00ed\u0159il je d\u00e1l. Av\u0161ak antivirov\u00e9 skenov\u00e1n\u00ed do jist\u00e9 m\u00edry zat\u011b\u017euje syst\u00e9m \u2014 p\u0159edev\u0161\u00edm procesor a disk. 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