Alerts This Week
Warning Icon 1 409
Alerts This Week
Warning Icon 1 409

Stay Ahead With Linux Security HOWTOs

Reduce Attack Surface Of Public Linux Servers Hero Esm H350
How to Secure My NetworkPrice Tag%201network security Linux administration

Open ports have a way of accumulating over time. A test environment gets deployed and never removed. An administrative interface is exposed for troubleshooting and left in place. A database that was supposed to listen internally ends up reachable from the internet. . Attackers look for these mistakes constantly. Redis, Elasticsearch, MongoDB, Jenkins, and similar services still show up on internet-facing systems where they were never meant to be exposed. Sometimes it's a temporary change that...
1 min read How to Secure My Network
How To Remove Malicious Cron Esm H350
How to Secure My NetworkPrice Tag%201security advisory intrusion detection

A compromised Linux server can continue running malware long after the initial intrusion. One of the most common persistence techniques is a malicious cron job that silently downloads payloads, restarts malware, or re-establishes attacker access every few minutes. This guide shows how to identify suspicious cron entries, preserve forensic evidence, remove unauthorized scheduled tasks, and verify that no additional persistence mechanisms remain. . What Should You Save Before Removing Cron Jobs...
5 - 9 min read How to Secure My Network
7.Locks HexConnections Esm H350
How to Secure My NetworkPrice Tag%201access control Linux administration

Most SSH hardening advice ends at the same recommendation: Disable password authentication and use SSH keys. . That's good advice. It removes entire classes of attacks, including password spraying, credential stuffing, and brute-force attempts against exposed servers. The problem is what happens next. Many administrators treat SSH keys as the finish line when they are really the beginning of the hardening process. Attackers rarely care whether they obtained access with a password or a private...
6 - 12 min read How to Secure My Network
Detect Unauthorised Ssh Keys Hero Esm H350
How to Secure My NetworkPrice Tag%201security advisory remote access

Most of the time, nobody notices. SSH authentication succeeds, no alerts are generated, and the connection looks exactly the way it did the day the key was installed. That's part of the problem. . When security teams investigate unauthorized access on Linux systems, they often focus on passwords, exposed services, or vulnerable software. Trusted access receives less attention. Yet a single forgotten or unauthorized SSH key can provide the same access as a legitimate user while attracting very...
4 - 7 min read How to Secure My Network
IDS VS IPS Esm H350
How to Secure My NetworkPrice Tag%201intrusion detection application security

The wrong IPS rule can look like a security fix right up until it becomes an outage. . On Linux systems, detection and prevention are often discussed together, but they do not carry the same operational risk. One tells admins that something suspicious happened. The other can decide whether traffic is allowed to continue. That is why IDS vs IPS is not just a definition to memorize. It is a deployment decision about where to monitor, where to block, and how much confidence a team needs before...
4 - 8 min read How to Secure My Network
Filter%20icon Refine HOWTOs
X Clear Filters
X Clear Filters
View More

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Community Poll

More Polls

What got you started with Linux?

No answer selected. Please try again.
Please select either existing option or enter your own, however not both.
Please select minimum {0} answer(s).
Please select maximum {0} answer(s).
/main-polls/150-what-got-you-started-with-linux?task=poll.vote&format=json
150
radio
0
[{"id":483,"title":"Self-taught through trial and error","votes":559,"type":"x","order":1,"pct":78.73,"resources":[]},{"id":484,"title":"Formal training or courses","votes":31,"type":"x","order":2,"pct":4.37,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.79,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.11,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
bottom 200
Loading...

Explore Latest Linux Security HOWTOs

We found -4 articles for you...
162
4.Lock AbstractDigital Esm H240
Price Tag%201securityprivacyonline privacy

Boost Your Online Privacy Using The Tor Browser Effectively

If you want the highest level of privacy and security with your web browser, you should be using Tor. . A while ago I wrote a piece on the best way to ensure your privacy with a web browser . A part of that advice was to use the Tor browser. In simplest terms, you cannot get more privacy and security from a web browser than when using Tor. The Tor browser uses the Onion network to ensure privacy and security. What is the Onion network? First off, Tor is short for "The Onion Router." When using the Onion network, all traffic is encapsulated in layers of encryption, which is transmitted through a series of nodes called "onion routers." As the traffic passes through a node, it peels away a single layer that reveals the next destination for the data. This makes it very difficult for a third party to trace your internet activity (more than any other browser). Both the Tor browser and the Onion network are free-to-use for anyone and the Tor browser is available for Android, Linux, MacOS, and Windows. And although Tor is a web browser, using it is slightly different than using browsers like Firefox, Chrome, Opera, Brave, Safari, and Edge. . Explore how the Tor Browser safeguards your online presence through multi-layered encryption and a global network of volunteer relays, ensuring anonymity and access.. Tor Browser, Onion Routing, Secure Browsing. . Brittany Day

Calendar%202 Mar 31, 2023 •User Avatar Brittany Day How to Strengthen My Privacy
News Add Esm H240

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Community Poll

More Polls

What got you started with Linux?

No answer selected. Please try again.
Please select either existing option or enter your own, however not both.
Please select minimum {0} answer(s).
Please select maximum {0} answer(s).
/main-polls/150-what-got-you-started-with-linux?task=poll.vote&format=json
150
radio
0
[{"id":483,"title":"Self-taught through trial and error","votes":559,"type":"x","order":1,"pct":78.73,"resources":[]},{"id":484,"title":"Formal training or courses","votes":31,"type":"x","order":2,"pct":4.37,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.79,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.11,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
bottom 200

Search Topics

Your message here