SSH service runs on 22 port number. You can change this port number for security. If you use Oracle Linux 7, Centos 7 or Red Hat Linux 7 versions, you can change port number with below operations. If selinux is enabled, you have to add new port number to selinux configuration because of the fact that selinux allows only 22 port number for ssh connections.<\/p>\n
Step 1 : Change Port Number<\/strong><\/p>\n \n[root #] vi \/etc\/ssh\/sshd_config Save and Exit\n<\/p><\/blockquote>\n Step 2 : Change Selinux Configuration<\/strong><\/p>\n \nTo change: Step 3 : Add New Port to Firewall<\/strong><\/p>\n \nTo Add: Step 4 : Restart SSHD Service to Activate New SSH Confiuration<\/strong><\/p>\n \n[root #] systemctl restart sshd.service\n<\/p><\/blockquote>\n Step 5 : Show Running SSH Port<\/strong><\/p>\n \n[root #] ss -tnlp | grep ssh\n<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":" SSH service runs on 22 port number. You can change this port number for security. If you use Oracle Linux 7, Centos 7 or Red Hat Linux 7 versions, you can change port number with below operations. If selinux is enabled, you have to add new port number to selinux configuration because of the fact…<\/p>\n","protected":false},"author":37,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[18,95],"tags":[],"class_list":["post-1362","post","type-post","status-publish","format-standard","hentry","category-linux-unix","category-system-security"],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p39NFI-lY","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/posts\/1362","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/users\/37"}],"replies":[{"embeddable":true,"href":"http:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/comments?post=1362"}],"version-history":[{"count":5,"href":"http:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/posts\/1362\/revisions"}],"predecessor-version":[{"id":1425,"href":"http:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/posts\/1362\/revisions\/1425"}],"wp:attachment":[{"href":"http:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/media?parent=1362"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/categories?post=1362"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.fatihacar.com\/blog\/wp-json\/wp\/v2\/tags?post=1362"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nPort 2290<\/p>\n
\n[root #] semanage port -a -t ssh_port_t -p tcp 2290
\nTo list:
\n[root #] semanage port -l | grep ssh\n<\/p><\/blockquote>\n
\n[root #] firewall-cmd –permanent –zone=public –add-port=2290\/tcp
\nTo Activate
\n[root #] firewall-cmd –reload\n<\/p><\/blockquote>\n