TL;DR - What are you running as a means of “antivirus” on Linux servers?

I have a few small Debian 12 servers running my services and would like to enhance my security posture. Some services are exposed to the internet and I’ve done quite a few things to protect the services and the hosts. When it comes to “antivirus”, I was looking at ClamAV as it seemed to be the most recommended. However, when I read the documentation, it stated that the recommended RAM was at least 2-4 gigs. Some of my servers have more power than other but some do not meet this requirement. The lower powered hosts are rpi3s and some Lenovo tinys.

When I searched for alternatives, I came across rkhunter and chrootkit, but they seem to no longer be maintained as their latest release was several years ago.

If possible, I’d like to run the same software across all my servers for simplicity and uniformity.

If you have a similar setup, what are you running? Any other recommendations?

P.S. if you are of the mindset that Linux doesn’t need this kind of protection then fine, that’s your belief, not mine. So please just skip this post.

  • nexusband@lemmy.worldEnglish
    914·
    10 months ago

    There are none. ClamAV is the only one there is, because it has a very specific and narrow purpose. There are no viruses for Linux.

    Chrootkit and rkhunter are also built for very specific things (detecting rootkits - or making them) and are not designed to protect, they are designed to analyse.

    My writing here also isn’t specifically to OP, but to all others that may find this thread - Anti Virus for Linux is BS and unless you are running SMB and still have lots of Windows in your network, it’s absolutely not needed, especially if you follow the basics (like not doing stuff as root, using sudo and not giving out any system rights).

      • nexusband@lemmy.worldEnglish
        59·
        10 months ago

        …some Linux machines definitely need anti-virus software. Samba or NFS servers, for instance, may store documents in undocumented, vulnerable Microsoft formats, such as Word and Excel, that contain and propagate viruses. Linux mail servers should run AV software in order to neutralize viruses before they show up in the mailboxes of Outlook and Outlook Express users.[

        Which is exactly what I said. ClamAV serves a very specific purpose and that’s this one.

        There are still no viruses for Linux specifically designed to break in to Linux, because it’s not possible.

          • nexusband@lemmy.worldEnglish
            11·
            10 months ago

            Apache and OpenSSL must be enabled and OpenSSL version must be 0.96d or older.

            Right. Completely proven wrong.

          • mathemachristian@lemm.eeEnglish
            24·
            10 months ago

            So if I’m reading this correct the vulnerability was patched before the worm got programmed and it peaked at 2000 machines infected when it targeted apache servers running openssl, which back in 2002 was basically any encrypted website.

            Don’t know how an AV would have helped there.

            • Kangie@lemmy.srcfiles.zipEnglish
              41·
              10 months ago

              Simply refuting the BS claim that it’s impossible for there to be a Linux virus.

              This one existed, therefore the claim is false.

        • Big P@feddit.ukEnglish
          7·
          10 months ago

          Mirai and other botnets, coin miners, ransomware… Do you think that malware makers just decided to ignore the billions of Linux servers and IoT devices that exist?

          • Zeth0s@lemmy.worldEnglish
            12·
            10 months ago

            I agree with you, but, it is also true that the overwhelming majority of ransomwares affect windows https://www.statista.com/statistics/701020/major-operating-systems-targeted-by-ransomware/

            Linux is not a significant target despite being so diffused

            Edit. For those downvoting, windows server is ~20% of the server market and it is second in that stat. GNU/Linux distros such as rhel, debian and so on are almost 80% of server market and still there are no sufficient attacks reported to end up in that stat

            • Big P@feddit.ukEnglish
              3·
              10 months ago

              True, but the largest botnet in the world runs purely on Linux devices

              • Zeth0s@lemmy.worldEnglish
                22·
                10 months ago

                It targets router firmwares though… These bot farms do not usually target real gnu/Linux os, because it is easier and more effective to attack router firmwares that are not well configured by producers and telcoms, and are practically never upgraded.

                Therefore they are not a real threat for standard mint or popOS user… Let alone gentoo users

                Edit. See https://en.m.wikipedia.org/wiki/Mirai_(malware)