security

So I have FreeBSD 14.0 with several real network interfaces (em0, igb0, wlan0, wlan1) and several loopback interfaces for jails. This configuration isn't final yet as I'm still experimenting. One of the real interfaces is facing the ISP, obviously, and hence it's configured by dhclient. It could...

Hi Did a random scan today with chkrootkit and rkhunter, chkrootkit gave me a warning: "Searching for Syslogk LKM rootkit... INFECTED: Possible Malicious Syslogk LKM rootkit installed" Anyone know anything about if this is normal error and can be ignored or if it can be something else? I...

Is Intel’s Total Memory Encryption (Multi-Key) feature supported in FreeBSD? And if so, how to enable it?

I have a concern about the recent news regarding the newly discovered SSH attacks, when "ChaCha20-Poly1305" or "CBC with Encrypt-then-MAC" is used. So, if we set up a server (sshd) or using it as a client (ssh) as default, would this vulnerability be relevant?

stable/12 and 12.4 31st December 2023 <https://lists.freebsd.org/archives/freebsd-announce/2023-December/000113.html> stable/13 30th April 2026 <https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=273795#c4>

I use ZFS snapshots and mirroring (both on a harddrive that is permanently connected and on harddrives that aren't always connected) as a means of keeping backups of my data. Using the snapshots, I can go back in time if I accidentally delete files or something else happened to my data on the...

With an external display connected: closing the lid does not lock lock the screen. Is there a workaround? Essentially: for locking to succeed.

Could anyone recommend any website pen testing software for FreeBSD? I have used vega scan in the past on Linux. But I don't know what tools are available for FreeBSD. I've done as much manual testing as I can think of so I'm looking for something automated. Thanks!

Hello, My new server is 13.2 and port security/zebedee does not exist, But I had it in 12.x . Does it has security problem to removed ?

Does the tpm2 driver in freebsd does have in-kernel RM similar to what is available in Linux via /dev/tpm0rm0 ? This is the preferred solution apparently in Linux instead of using the tpm2-abrmd stack. This tpm2-abrmd is dependent on dbus.

Hello all, my first post! Been using FreeBSD for a week or two now and I wanted to secure the simple things right away as is my nature. I wrote a Python script that can set and re-set: rc.conf sysctl.conf loader.conf login.conf Along with a set of mitigations that I've gathered over the...

This topic provides a solution on how to make own Proxy serwer, on a FreeBSD operating system, using Stunnel validated with public-key cryptography between Stunnel server and Stunnel client, for use by a web browser. The primary benefit is that, unlike other VPN, the client does not require...

Anybody using security/acme.sh might want to upgrade: security/acme.sh runs arbitrary commands from a remote server! If you're using HiCA, you surely want to revoke & renew your certs (with a more trustworthy CA). See this GitHub issue: https://github.com/acmesh-official/acme.sh/issues/4659

Is there a security oriented memory allocator for FreeBSD like GrapheneOS/Linux's Hardened_malloc library https://github.com/GrapheneOS/hardened_malloc or OpenBSD's Otto-malloc https://man.openbsd.org/malloc.3 where you can enable additional checks? I'd like to do additional hardening on some of...

I've finally enabled w^x for on 13.1-RELEASE-p1: # sysctl -a |grep wx kern.elf32.allow_wx: 0 kern.elf64.allow_wx: 0 For the usual suspects that struggle with this, I've used elfctl or proccontrol to circumvent the restriction. Unfortunately, I've come across one program that persistently...

I do not have a static IP for my computer connected by fiber to home. My ISP assigns an IP address by DHCP, is there a way of making my ISP's router at my home remember the address assigned to me by local settings? I do not fully understand but this URL to a how-to guide points to a method...

Somewhat duplicating portions of what I posted on a different thread, to provide context : Tried installation from the Ports tree, I was doing that to understand the process of installing software from source using the Ports collection. There were error messages while running...

After a couple of years, I have started to use FreeBSD again. Previously I was using Linux, and in all my servers I have installed "PSAD" package, which detect the Port Scanners IP addresses and bans them through IPTabels rules. I have searched the same in FreeBSD but does not exit. something...

Heads up: So, this turned out to be very long. Longer than I anticipated before I started writing. Also, I'm not completely certain whether this shouldn't have gone into user space programing. Since it's still very much tied into base, I'll leave it here for the moment and ask the moderators to...

Has anyone got a good reference for how to set up krb5p security? I've got NFSv4 running fine without security, but that kerberos setup has been a major pain in the neck. There doesn't seem to be much logging going on, no matter how much -d or -h's I use. It appears, Wireshark is my only utility...