Bug 245966 - RFE: Allow SSH throttling to discourage brute force attacks
Summary: RFE: Allow SSH throttling to discourage brute force attacks
Alias: None
Product: Fedora
Classification: Fedora
Component: system-config-firewall (Show other bugs)
(Show other bugs)
Version: rawhide
Hardware: All Linux
Target Milestone: ---
Assignee: Thomas Woerner
QA Contact: Fedora Extras Quality Assurance
Keywords: FutureFeature
Depends On:
TreeView+ depends on / blocked
Reported: 2007-06-27 17:51 UTC by Danny D'Amours
Modified: 2013-11-06 19:30 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2013-11-06 19:30:48 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

Description Danny D'Amours 2007-06-27 17:51:09 UTC
Description of problem:

With the SSH port opened via iptables, it is possible for others to run a brute
force ssh attack.

Version-Release number of selected component (if applicable):

How reproducible:

Always on any internet accessible machine

Steps to Reproduce:
1. Open SSH port via iptables or system-config-securitylevel
Actual results:

Logs reveal repeated and constant attempts to login to SSH using common
usernames and passwords

Expected results:

Allow users in system-config-securitylevel to enable throttling on the SSH port
to discourage repeated attempts.  See :
http://la-samhna.de/library/brutessh.html#3 for more details.

Ideally this functionality could be easily exposed as well as having the
parameters customizable.

Additional info:

Comment 1 Thomas Woerner 2007-07-25 11:50:43 UTC
There will be a new firewall configuration tool for Fedora, soon. Mechanisms
like this are on the todo list.

Comment 2 Thomas Woerner 2007-09-21 09:14:58 UTC
Assigning to system-config-firewall in devel.

Comment 3 Jon Stanley 2008-04-23 20:28:39 UTC
Adding FutureFeature keyword to RFE's.

Comment 4 John Poelstra 2008-09-18 21:42:15 UTC
The ability to block hosts which repeatedly fail to login is provided by the denyhosts package.  Should this RFE remain open?

Comment 5 Danny D'Amours 2008-09-19 14:02:00 UTC
denyhosts certainly does the job but I think a GUI to enabled denyhosts and to change the config in system-config-firewall or its replacement is necessary to help expose this functionality.

Is there any chance that denyhosts (with fairly lax restrictions) would be considered to be enabled on default installs?  I can't think of a valid use case where an IP should continually bang on a server with bad passwords.

Comment 6 Thomas Woerner 2013-11-06 19:30:48 UTC
Closing because there will not be big changes to system-config-firewall anymore.

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