{"id":67588,"date":"2021-07-25T21:30:07","date_gmt":"2021-07-26T01:30:07","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/recent-posts\/experiment-with-firewalls-in-linux-centos-redhat-devops-rhcsa\/"},"modified":"2021-07-25T21:30:07","modified_gmt":"2021-07-26T01:30:07","slug":"experiment-with-firewalls-in-linux-centos-redhat-devops-rhcsa","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=67588","title":{"rendered":"Experiment with Firewalls in Linux (CentOS\/RedHat) #DevOps #RHCSA"},"content":{"rendered":"

44 firewall-cmd –state
\n45 systemctl status firewalld
\n46 firewall-cmd –reload
\n47 systemctl restart firewalld.service<\/p>\n

systemctl restart firewalld<\/p>\n

48 firewall-cmd –get-default-zone
\n49 firewall-cmd –get-active-zones
\n50 firewall-cmd –get-zones
\n51 firewall-cmd –get-zone-of-interface=ens33
\n52 firewall-cmd –list-all
\n53 firewall-cmd –list-all-zones
\n54 firewall-cmd –get-default-zone
\n55 firewall-cmd –get-active-zones
\n56 firewall-cmd –list-all
\n57 firewall-cmd –get-zones
\n58 firewall-cmd –list-all-zones
\n59 firewall-cmd –list-all –zone external
\n60 firewall-cmd –new-zone testzone –perm
\n61 firewall-cmd –delete-zone testzone –perm
\n62 firewall-cmd –get-zones
\n63 firewall-cmd –new-zone testzone –perm
\n64 firewall-cmd –get-zones
\n65 cat \/etc\/firewalld\/zones\/testzone.xml
\n66 cat \/etc\/firewalld\/zones\/
\n67 ll \/etc\/firewalld\/zones\/
\n68 cat \/etc\/firewalld\/firewalld.conf
\n69 firewall-cmd –get-services
\n70 firewall-cmd –list-services
\n71 firewall-cmd –list-services –zone internal
\n72 firewall-cmd –query-service tftp
\n73 firewall-cmd –query-service ftp<\/p>\n

76 firewall-cmd –query-service ssh
\n77 firewall-cmd –new-service testservice –perm
\n78 ll \/etc\/firewalld\/services\/testservice.xml
\n79 firewall-cmd –add-service testservice testservice –zone work –perm
\n80 firewall-cmd –permanent –add-service testservice –zone work
\n81 firewall-cmd –list-services –zone work
\n82 firewall-cmd –list-ports
\n83 firewall-cmd –query-port 53\/tcp –zone dmz
\n84 firewall-cmd –permanent –add-port 53\/tcp
\n85 firewall-cmd –list-ports
\n86 firewall-cmd –query-port 53\/tcp –zone dmz
\n87 firewall-cmd –query-port 53\/tcp From: http:\/\/sitestree.com\/?p=11980
Categories:DevOps, RHCSA
Tags:
Post Data:2017-12-15 12:47:48<\/p>\n

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44 firewall-cmd –state 45 systemctl status firewalld 46 firewall-cmd –reload 47 systemctl restart firewalld.service systemctl restart firewalld 48 firewall-cmd –get-default-zone 49 firewall-cmd –get-active-zones 50 firewall-cmd –get-zones 51 firewall-cmd –get-zone-of-interface=ens33 52 firewall-cmd –list-all 53 firewall-cmd –list-all-zones 54 firewall-cmd –get-default-zone 55 firewall-cmd –get-active-zones 56 firewall-cmd –list-all 57 firewall-cmd –get-zones 58 firewall-cmd –list-all-zones 59 firewall-cmd –list-all –zone external … <\/p>\n

Continue reading<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1917],"tags":[],"class_list":["post-67588","post","type-post","status-publish","format-standard","hentry","category-fromsitestree-com","item-wrap"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":67586,"url":"http:\/\/bangla.sitestree.com\/?p=67586","url_meta":{"origin":67588,"position":0},"title":"Create your own yum repo in Centos\/Redhat #DevOps #RHCSA","author":"Author-Check- Article-or-Video","date":"July 25, 2021","format":false,"excerpt":"Yum is a software installation manager for Redhat Linux and Related. yum is a better tool than rpm. Here, we will take the rpm packages as come with Redhat\/Centos and then we will host those packages on our own Repo Server for yum. i.e. yum will use this Repo to\u2026","rel":"","context":"In "FromSitesTree.com"","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":14013,"url":"http:\/\/bangla.sitestree.com\/?p=14013","url_meta":{"origin":67588,"position":1},"title":"Centos\/Redhat \u09b2\u09bf\u09a8\u09be\u0995\u09cd\u09b8 \u098f yum \u0987\u09a8\u09cd\u09b8\u099f\u09b2\u09be\u09b0 \u09b8\u09be\u09b0\u09cd\u09ad\u09be\u09b0 \u0995\u09bf\u09ad\u09be\u09ac\u09c7 \u0995\u09a8\u09ab\u09bf\u0997\u09be\u09b0 \u0995\u09b0\u09ac\u09c7\u09a8","author":"Sayed","date":"December 7, 2017","format":false,"excerpt":"Centos\/Redhat \u09b2\u09bf\u09a8\u09be\u0995\u09cd\u09b8 \u098f yum \u0987\u09a8\u09cd\u09b8\u099f\u09b2\u09be\u09b0 \u09b8\u09be\u09b0\u09cd\u09ad\u09be\u09b0 \u0995\u09bf\u09ad\u09be\u09ac\u09c7 \u0995\u09a8\u09ab\u09bf\u0997\u09be\u09b0 \u0995\u09b0\u09ac\u09c7\u09a8 Mount Installer ISO mkdir \/mnt\/dvd1 mount \/dev\/sr0 \/mnt\/dvd1 Check if FTP server is installed systemctl status vsftpd systemctl start vsftpd Install ftp Server. Using rpm as yum is not available yet [default yum needs the internet, kindof] cd \/mnt\/dvd1\/Packages\/ rpm -ivh\u2026","rel":"","context":"In "\u09b2\u09bf\u09a8\u09be\u0995\u09cd\u09b8 \u098f\u09ac\u0982 \u0989\u09a8\u09bf\u0995\u09cd\u09b8 \u0964 Linux and Unix"","block_context":{"text":"\u09b2\u09bf\u09a8\u09be\u0995\u09cd\u09b8 \u098f\u09ac\u0982 \u0989\u09a8\u09bf\u0995\u09cd\u09b8 \u0964 Linux and Unix","link":"http:\/\/bangla.sitestree.com\/?cat=1231"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":20401,"url":"http:\/\/bangla.sitestree.com\/?p=20401","url_meta":{"origin":67588,"position":2},"title":"Learn some Centos\/Redhat Linux: RHCE: MariaDB Administration on Redhat\/Fedora\/CentOS","author":"Author-Check- Article-or-Video","date":"February 20, 2021","format":false,"excerpt":"RHCE: MariaDB Administration on Redhat\/Fedora\/CentOS Check if mariaDB is installed or not 130 yum list installed | grep ^mariadb mariaDB originated from MySQL - after MySQL Got Bought by Oracle 133 yum list installed | grep ^mariadb I see - installed though not completely Output: mariadb-libs.x86_64 1:5.5.52-1.el7 @anaconda There are\u2026","rel":"","context":"In "FromSitesTree.com"","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":20403,"url":"http:\/\/bangla.sitestree.com\/?p=20403","url_meta":{"origin":67588,"position":3},"title":"Learn some Centos\/Redhat Linux: RHCE: MariaDB Administration on Redhat\/Fedora\/CentOS","author":"Author-Check- Article-or-Video","date":"February 20, 2021","format":false,"excerpt":"The author is: the_authornRHCE: MariaDB Administration on Redhat\/Fedora\/CentOS Check if mariaDB is installed or not 130 yum list installed | grep ^mariadb mariaDB originated from MySQL - after MySQL Got Bought by Oracle 133 yum list installed | grep ^mariadb I see - installed though not completely Output: mariadb-libs.x86_64 1:5.5.52-1.el7\u2026","rel":"","context":"In "FromSitesTree.com"","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":20405,"url":"http:\/\/bangla.sitestree.com\/?p=20405","url_meta":{"origin":67588,"position":4},"title":"Learn some Centos\/Redhat Linux: RHCE: MariaDB Administration on Redhat\/Fedora\/CentOS","author":"Author-Check- Article-or-Video","date":"February 20, 2021","format":false,"excerpt":"The author is: the_authornRHCE: MariaDB Administration on Redhat\/Fedora\/CentOS Check if mariaDB is installed or not 130 yum list installed | grep ^mariadb mariaDB originated from MySQL - after MySQL Got Bought by Oracle 133 yum list installed | grep ^mariadb I see - installed though not completely Output: mariadb-libs.x86_64 1:5.5.52-1.el7\u2026","rel":"","context":"In "FromSitesTree.com"","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":20409,"url":"http:\/\/bangla.sitestree.com\/?p=20409","url_meta":{"origin":67588,"position":5},"title":"Learn some Centos\/Redhat Linux: RHCE: MariaDB Administration on Redhat\/Fedora\/CentOS","author":"Author-Check- Article-or-Video","date":"February 20, 2021","format":false,"excerpt":"The author is: the_authornRHCE: MariaDB Administration on Redhat\/Fedora\/CentOS Check if mariaDB is installed or not 130 yum list installed | grep ^mariadb mariaDB originated from MySQL - after MySQL Got Bought by Oracle 133 yum list installed | grep ^mariadb I see - installed though not completely Output: mariadb-libs.x86_64 1:5.5.52-1.el7\u2026","rel":"","context":"In "FromSitesTree.com"","block_context":{"text":"FromSitesTree.com","link":"http:\/\/bangla.sitestree.com\/?cat=1917"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/67588","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=67588"}],"version-history":[{"count":0,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/67588\/revisions"}],"wp:attachment":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=67588"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=67588"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=67588"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}