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| howto:block-hackers [2023/12/17 21:53] – [Auto-Blocking] From Permanent to Persistent digital man | howto:block-hackers [2023/12/18 17:09] – [Denial of Service] Mention new MaxLoginInactivity setting digital man |
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| * Set the ''inactive_hangup'' setting in the ''[login]'' section of your ''[[dir:ctrl]]/[[config:modopts.ini]]'' file to terminate such //dumb// connections after just a short amount of inactivity (e.g. 30 seconds) | * Set the ''inactive_hangup'' setting in the ''[login]'' section of your ''[[dir:ctrl]]/[[config:modopts.ini]]'' file to terminate such //dumb// connections after just a short amount of inactivity (e.g. 30 seconds) |
| * Make sure if you're using any "login matrix" or other 3rd party login module, especially those with animated prompts, that they include some kind of user-inactivity timeout and disconnection support((this is a surprisingly common flaw in custom animated pause prompt mods)) | * Make sure if you're using any "login matrix" or other 3rd party login module, especially those with animated prompts, that they include some kind of user-inactivity timeout and disconnection support((this is a surprisingly common flaw in custom animated pause prompt mods)) |
| | * Synchronet v3.20 added a new configuration option to help with this scenario: SCFG->Servers->Terminal Server->Max Login Inactivity (default: 10 minutes), also ''MaxLoginInactivity'' in the ''[BBS]'' section of ''[[config:sbbs.ini]]'' |
| ===== Synchronet's Defense ===== | ===== Synchronet's Defense ===== |
| Synchronet normally disallows the use of common passwords by users (see the ''[[dir:text]]/password.can'' file) and system operator accounts are protected with a secondary "system password", so there should be little chance of a dictionary-based login attack actually succeeding. You can run ''[[dir:exec]]/badpasswords.js'' (e.g. using [[util:jsexec]]) to check your user database for common passwords if you wish. | Synchronet normally disallows the use of common passwords by users (see the ''[[dir:text]]/password.can'' file) and system operator accounts are protected with a secondary "system password", so there should be little chance of a dictionary-based login attack actually succeeding. You can run ''[[dir:exec]]/badpasswords.js'' (e.g. using [[util:jsexec]]) to check your user database for common passwords if you wish. |
