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Login LockDown records the IP address and timestamp of every failed login attempt. If more than a certain number of attempts are detected within a short period of time from the same IP range, then the login function is disabled for all requests from that IP address. This helps to prevent brute force password discovery and attacks.
The plugin defaults to a 1 hour lock out of an IP block after 3 failed login attempts within 5 minutes. This can be modified in options. Administrators can release locked out IP ranges manually from the panel.

Configure the plugin from Settings – Login LockDown

Skjámyndir

Protect your login form by banning IPs with multiple failed login attempts

Uppsetning

Extract the zip file into your plugins directory into its own folder.
Activate the plugin in the Plugin options.
Customize the settings from Settings – Login LockDown panel.

Umsagnir

strarsis 26. september, 2022

Nice plugin that adds protection against brute-force login attempts.

David Waumsley 20. september, 2021

I can't believe after many many years of use I have not said thank you. I really appreciate this plugin. I recommended this recently to a friend who was delighted there was no advertising and upsell. Indeed! Great to know there are still some who go to the effort of sharing and updating because it's a nice thing to do.

aseannewstoday 1. apríl, 2021

This is brilliant. It's a must have for websites that attract a lot of traffic and which therefore will attract a lot of forced login attempts.

ondrique 11. maí, 2020

Thank you for this perfect plugin. You wouldn't believe how many login attempts you can get even on a brand new website w/o any external links so far. This is one of the plugins, I install everywhere.

10. maí, 2020

Thanks, been working away in background for ages.

Closed account 25. september, 2019

I like this plugin and use it on a number of websites I am a webmaster for. In case it helps, here are some thoughts on how/why I have configured the plugin. I leave the first 3 entries as default (3,5,60). They seem ideal to me. I set Lockout Invalid Usernames? to YES. If they don't know the Username, why are they trying to login? I am careful, so I won't lock myself out. I set Mask Login Errors? to YES. Denies useful intelligence to people who are trying to login when they shouldn't. Why help them? I set Show Credit Link? to NO. I love helping people - and as it happens it's my professional work - however telling people about the plugin so they can protect their blogs also tells people who are trying to login when they shouldn't what security I am using. This is a more minor point, however it also falls under the 'need to know policy' - they don't.

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Þátttakendur & höfundar

“Login LockDown – Protect Login Form” er opinn hugbúnaður. Eftirfarandi aðilar hafa lagt sitt af mörkum við smíði þessarar viðbótar.

WebFactory

“Login LockDown – Protect Login Form” has been translated into 3 locales. Thank you to the translators for their contributions.

Translate “Login LockDown – Protect Login Form” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.

Breytingarsaga

v1.83

2022/10/04
fixed timezone bug

v1.82

2022/09/23
WebFactory took over development
a full rewrite will follow soon, for now we patched some urgent things
prefixed function names that are in global namespace
properly escaped all inputs

Old changelog

ver. 1.8.1 30-Sep-2019

adding missing ./languages folder

ver. 1.8 30-Sep-2019
fixed issues with internationalization, added .pot file
changed the credit link to default to not showing

ver. 1.7.1 13-Sep-2016
fixed bug causing all ipv6 addresses to get locked out if 1 was
added in WordPress MultiSite functionality
fixed bug where subnets could be overly matched, causing more IPs to be blocked than intended
moved the report for locked out IP addresses to its own tab

ver. 1.6.1 8-Mar-2014
fixed html glitch preventing options from being saved

ver. 1.6 7-Mar-2014
cleaned up deprecated functions
fixed bug with invalid property on a non-object when locking out invalid usernames
fixed utilization of $wpdb->prepare
added more descriptive help text to each of the options
added the ability to remove the „Login form protected by Login LockDown.“ message from within the dashboard

ver. 1.5 17-Sep-2009
implemented wp_nonce security in the options and lockdown release forms in the admin screen
fixed a security hole with an improperly escaped SQL query
encoded certain outputs in the admin panel using esc_attr() to prevent XSS attacks
fixed an issue with the ‘Lockout Invalid Usernames’ option not functioning as intended

ver. 1.4 29-Aug-2009
removed erroneous error affecting WP 2.8+
fixed activation error caused by customizing the location of the wp-content folder
added in the option to mask which specific login error (invalid username or invalid password) was generated
added in the option to lock out failed login attempts even if the username doesn’t exist

ver. 1.3 23-Feb-2009
adjusted positioning of plugin byline
allowed for dynamic location of plugin files

ver. 1.2 15-Jun-2008
now compatible with WordPress 2.5 and up only

ver. 1.1 01-Sep-2007
revised time query to MySQL 4.0 compatibility

ver. 1.0 29-Aug-2007
released

Does one job and does it well

Just the kind of WP plugin we need more of!

a must have for high volume websites

Works great!

Great little plugin

Useful security plug