Score:0

Can I consider my OS Safe after I installed firewall?

ms flag

After ubuntu 20 installation I installed firewall with main options:

hoster@hoster-laptop:/project$ sudo ufw allow ssh
Rules updated
Rules updated (v6)
hoster@hoster-laptop:/project$ sudo ufw enable
Firewall is active and enabled on system startup
hoster@hoster-laptop:/project$ sudo ufw default deny incoming
Default incoming policy changed to 'deny'
(be sure to update your rules accordingly)
hoster@hoster-laptop:/project$ sudo ufw default allow outgoing
Default outgoing policy changed to 'allow'
(be sure to update your rules accordingly)
hoster@hoster-laptop:/project$ sudo ufw status numbered
Status: active

     To                         Action      From
     --                         ------      ----
[ 1] 22/tcp                     ALLOW IN    Anywhere
[ 2] 22/tcp (v6)                ALLOW IN    Anywhere (v6)

I wonder can I consider my composer safe ? I do not need other people/applications has access to content of my OS. I have apache installed only for internal access.

Have I to take some additive steps?

Thanks in advance!

cn flag
"Have I to take some additive steps?" Ubuntu out of the box IS as safe as it gets; all incomming traffic is blocked unless you install software that allows it. Please do not ask for opinions "I wonder can I consider my composer safe ?" is not going to be answered.
user535733 avatar
cn flag
Good security is more a set of good habits and a bit of learning instead of a single magic application. Firewalls originally became a popular workaround back in the 1990s because Windows had exploitable services listening for connections that the user could not control nor disable (they fixed that problem long ago). Ubuntu never had that problem. A good introduction to smart security is the [Ubuntu Security Podcast](https://ubuntusecuritypodcast.org/)
Score:1
cn flag

At some point its put you in safe side, Better than nothing. Here is some others tips but not limited, that can make it to be more secure.

  1. Choose Disk Encryption
  2. Make sure the Important security updates option is turned on
  3. Many free extensions are available to improve the security of your browser
  4. Locking root for ssh login
mangohost

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.