UFW (Uncomplicated Firewall)\u00a0 – it is available from Ubunut 15.X<\/p>\n\n\n\n
Install UFW simple on Linux<\/strong><\/p>\n\n\n\n I am using ubuntu most famous distro and most people use easy ( copy of debian).<\/p>\n\n\n\n #apt-get install ufw<\/strong><\/p>\n\n\n\n by dfault it was disabled as service – enable service.<\/p>\n\n\n\n #ufw enable<\/strong><\/p>\n\n\n\n Command may disrupt existing ssh connections. Proceed with operation (y|n)? y<\/strong> Checking the Service running or not by issuing below command :<\/p>\n\n\n\n #ufw status verbose<\/strong><\/p>\n\n\n\n UFW Deny Command<\/strong><\/p>\n\n\n\n The “deny” command works similar to the “allow” command and is used to close a port in the firewall:<\/p>\n\n\n\n Deny with Port option:<\/p>\n\n\n\n #ufw deny 80<\/strong><\/p>\n\n\n\n Allow a Port Range<\/p>\n\n\n\n You can allow a range of ports in UFW. Some services like FTP or IRC use a range of ports to communicate with its clients.<\/p>\n\n\n\n For this example we will allow the port range that used range is port 3000 to 7000.<\/p>\n\n\n\n #ufw allow 3000:7000\/tcp Allow a specific IP Address<\/strong><\/p>\n\n\n\n And you can add a specific IP to allow access to all services by adding the “from” option. <\/p>\n\n\n\n #ufw allow from 192.168.1.81<\/strong><\/p>\n\n\n\n Allow Subnet<\/strong><\/p>\n\n\n\n If you want to allow all IP addresses on your subnet, you can add the IP subnet (range of IP addresses) to the UFW command like this:<\/p>\n\n\n\n #ufw allow from 192.168.1.0\/24<\/strong><\/p>\n\n\n\n If you have a complex rule then there is a simple way to identify and delete the rule by its rule ID. Run the following command to get a list of all rules with their ID’s:<\/p>\n\n\n\n #ufw status numbered<\/strong><\/p>\n\n\n\n Now delete the SSH rule for IPv6 only by using the number of the rule:<\/p>\n\n\n\n #ufw delete 1<\/strong><\/p>\n\n\n\n Note : make you list again befre deleting another rule, since numbers are changed after deleting<\/p>\n\n\n\n Disable and Reset UFW<\/strong><\/p>\n\n\n\n #ufw disable<\/strong><\/p>\n\n\n\n Firewall stopped and disabled on system startup If you want to turn off UFW completely and delete all the rules, you can use “reset” command:<\/p>\n\n\n\n #ufw reset<\/strong> – make you understand this before executing, this will remove all rules happy Labbbbbbbbbbbbbing…!!!<\/p>\n","protected":false},"excerpt":{"rendered":" I want to run web Server Locally and safeguard my webserver decided to use UFW ( old school it was iptables – behind UFW). What is UFW ? UFW (Uncomplicated Firewall)\u00a0 – it is available from Ubunut 15.X Install UFW simple on Linux I am using ubuntu most famous distro and most people use easy […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-1055","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.balajibandi.com\/index.php?rest_route=\/wp\/v2\/posts\/1055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.balajibandi.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.balajibandi.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.balajibandi.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.balajibandi.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1055"}],"version-history":[{"count":1,"href":"https:\/\/www.balajibandi.com\/index.php?rest_route=\/wp\/v2\/posts\/1055\/revisions"}],"predecessor-version":[{"id":1058,"href":"https:\/\/www.balajibandi.com\/index.php?rest_route=\/wp\/v2\/posts\/1055\/revisions\/1058"}],"wp:attachment":[{"href":"https:\/\/www.balajibandi.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.balajibandi.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.balajibandi.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Firewall is active and enabled on system startup<\/p>\n\n\n\n![\"\"](\"https:\/\/www.balajibandi.com\/wp-content\/uploads\/2020\/07\/image.png\")
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#ufw allow 3000:7000\/udp<\/strong><\/p>\n\n\n\n
The command will allow connections to ports 3000-7000 via TCP and UDP protocol.<\/p>\n\n\n\n![\"\"](\"https:\/\/www.balajibandi.com\/wp-content\/uploads\/2020\/07\/image-1.png\")
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The UFW status command.<\/p>\n\n\n\n
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