mirror of https://github.com/acanas/swad-core.git
49 lines
2.2 KiB
C
49 lines
2.2 KiB
C
// swad_firewall.h: firewall to mitigate denial of service attacks
|
|
|
|
#ifndef _SWAD_FW
|
|
#define _SWAD_FW
|
|
/*
|
|
SWAD (Shared Workspace At a Distance in Spanish),
|
|
is a web platform developed at the University of Granada (Spain),
|
|
and used to support university teaching.
|
|
|
|
This file is part of SWAD core.
|
|
Copyright (C) 1999-2023 Antonio Cañas Vargas
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Affero General Public License as
|
|
published by the Free Software Foundation, either version 3 of the
|
|
License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Affero General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Affero General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
/*****************************************************************************/
|
|
/************************** Public types and constants ***********************/
|
|
/*****************************************************************************/
|
|
|
|
/* The maximum number of clicks from the same IP-user in the interval
|
|
should be large enough to prevent an IP from being banned
|
|
due to automatic refresh when the user is viewing the last clicks. */
|
|
#define Fw_CHECK_INTERVAL ((time_t)(30UL)) // Check clicks in the last 30 seconds
|
|
#define Fw_MAX_CLICKS_IN_INTERVAL 150 // Maximum of 150 clicks allowed in 30 seconds
|
|
// (5 clicks/s sustained for 30 s)
|
|
|
|
#define Fw_TIME_BANNED ((time_t)(60UL*60UL)) // Ban IP for 1 hour
|
|
|
|
#define Fw_TIME_TO_DELETE_OLD_CLICKS Fw_CHECK_INTERVAL // Remove clicks older than these seconds
|
|
|
|
/*****************************************************************************/
|
|
/***************************** Public prototypes *****************************/
|
|
/*****************************************************************************/
|
|
|
|
void Fir_CheckFirewallAndExitIfBanned (void);
|
|
void Fir_CheckFirewallAndExitIfTooManyRequests (void);
|
|
|
|
#endif
|