SSH Security Primer: Server Security Settings
My previous article in this series discussed SSH client security settings. To summarize, if you can’t control installations of rogue SSH clients, your only control is to limit outbound access through firewalling or other network-layer controls. Another of my articles discusses the issues with allowing outbound SSH access to the Internet.
SSH Servers: A Basic Risk Analysis
How do you secure your SSH servers? What are the total risks of such servers to your organization? You’re well aware of the possibility of people hacking your server and getting unauthorized access. That’s bad. But there are other risks. The SANS Institute’s Top 20 risk list really stresses SSH risks. If compromised, that host can be a router/forwarder that will forward any kind of traffic to any host the p0wned box can access—even your "secured" hosts given Internet Assigned Numbers Authority (IANA) reserved IP addresses. (Read RFC 3330 and RFC 1918 for the gory details on these addresses.) In most cases, those addresses aren’t accessible over the Internet.
More of a concern is your host’s threat to the rest of the Internet.
- Login or register to post comments
- Printer-friendly version
- 1249 reads
- PDF version
More in Tux Machines
- Highlights
- Front Page
- Latest Headlines
- Archive
- Recent comments
- All-Time Popular Stories
- Hot Topics
- New Members
digiKam 7.7.0 is releasedAfter three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. |
Dilution and Misuse of the "Linux" Brand
|
Samsung, Red Hat to Work on Linux Drivers for Future TechThe metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. |
today's howtos
|
Recent comments
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago