{"id":12653,"date":"2026-01-28T22:18:23","date_gmt":"2026-01-28T17:18:23","guid":{"rendered":"https:\/\/alexeyka.zantsev.com\/?p=12653"},"modified":"2026-01-28T22:18:52","modified_gmt":"2026-01-28T17:18:52","slug":"tcpdump-hourly","status":"publish","type":"post","link":"https:\/\/alexeyka.zantsev.com\/?p=12653","title":{"rendered":"tcpdump hourly"},"content":{"rendered":"\n<p>cron job:<\/p>\n\n\n\n<pre class=\"wp-block-code has-vivid-red-color has-text-color has-link-color wp-elements-3db7df722ed9b4b8d9f89eeaea978a88\"><code># start tcpdump each hour from 8:00 to 20:00 daily\n00 8-20 * * * root      \/var\/scripts\/tcpdumper.sh<\/code><\/pre>\n\n\n\n<p>tcpdumper.sh script:<\/p>\n\n\n\n<pre class=\"wp-block-code has-vivid-red-color has-text-color has-link-color wp-elements-14185cfaf139f846694667b92ddcae07\"><code>#!\/bin\/bash\n\nTCPDUMP=\"\/usr\/bin\/timeout 1h \/usr\/sbin\/tcpdump -v -As0 -pnni enp2s0 udp and net 10.72.1.0\/24 or net 10.72.2.0\/24 or host 1.2.3.4\"\nDATE=$(date +%F_%T)\n\ncd \/home\/user\/\n$TCPDUMP -w $DATE.pcap\n\n# remove older than 5 days old dumps\nfind \/home\/user\/ -type f -name \"*pcap\" -mtime +5 -execdir rm -f {} \\;\n\nexit $?<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>cron job: tcpdumper.sh script:<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[219],"class_list":["post-12653","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-tcpdump"],"_links":{"self":[{"href":"https:\/\/alexeyka.zantsev.com\/index.php?rest_route=\/wp\/v2\/posts\/12653","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/alexeyka.zantsev.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/alexeyka.zantsev.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/alexeyka.zantsev.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/alexeyka.zantsev.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12653"}],"version-history":[{"count":3,"href":"https:\/\/alexeyka.zantsev.com\/index.php?rest_route=\/wp\/v2\/posts\/12653\/revisions"}],"predecessor-version":[{"id":12656,"href":"https:\/\/alexeyka.zantsev.com\/index.php?rest_route=\/wp\/v2\/posts\/12653\/revisions\/12656"}],"wp:attachment":[{"href":"https:\/\/alexeyka.zantsev.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12653"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/alexeyka.zantsev.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12653"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/alexeyka.zantsev.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12653"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}