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[Netfilter] respect ban time limits

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This commit is contained in:
Habetdin 2024-01-30 14:09:37 +03:00
parent 63426c3cd0
commit 1787c53d98
1 changed files with 15 additions and 8 deletions
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23
data/Dockerfiles/netfilter/main.py
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@ -114,8 +114,6 @@ def ban(address):
global lock global lock
refreshF2boptions() refreshF2boptions()
BAN_TIME = int(f2boptions['ban_time'])
BAN_TIME_INCREMENT = bool(f2boptions['ban_time_increment'])
MAX_ATTEMPTS = int(f2boptions['max_attempts']) MAX_ATTEMPTS = int(f2boptions['max_attempts'])
RETRY_WINDOW = int(f2boptions['retry_window']) RETRY_WINDOW = int(f2boptions['retry_window'])
NETBAN_IPV4 = '/' + str(f2boptions['netban_ipv4']) NETBAN_IPV4 = '/' + str(f2boptions['netban_ipv4'])
@ -150,7 +148,7 @@ def ban(address):
if bans[net]['attempts'] >= MAX_ATTEMPTS: if bans[net]['attempts'] >= MAX_ATTEMPTS:
cur_time = int(round(time.time())) cur_time = int(round(time.time()))
NET_BAN_TIME = BAN_TIME if not BAN_TIME_INCREMENT else BAN_TIME * 2 ** bans[net]['ban_counter'] NET_BAN_TIME = calcNetBanTime(bans[net]['ban_counter'])
logger.logCrit('Banning %s for %d minutes' % (net, NET_BAN_TIME / 60 )) logger.logCrit('Banning %s for %d minutes' % (net, NET_BAN_TIME / 60 ))
if type(ip) is ipaddress.IPv4Address and int(f2boptions['manage_external']) != 1: if type(ip) is ipaddress.IPv4Address and int(f2boptions['manage_external']) != 1:
with lock: with lock:
@ -277,12 +275,11 @@ def snat6(snat_target):
tables.snat6(snat_target, os.getenv('IPV6_NETWORK', 'fd4d:6169:6c63:6f77::/64')) tables.snat6(snat_target, os.getenv('IPV6_NETWORK', 'fd4d:6169:6c63:6f77::/64'))
def autopurge(): def autopurge():
global f2boptions
while not quit_now: while not quit_now:
time.sleep(10) time.sleep(10)
refreshF2boptions() refreshF2boptions()
BAN_TIME = int(f2boptions['ban_time'])
MAX_BAN_TIME = int(f2boptions['max_ban_time'])
BAN_TIME_INCREMENT = bool(f2boptions['ban_time_increment'])
MAX_ATTEMPTS = int(f2boptions['max_attempts']) MAX_ATTEMPTS = int(f2boptions['max_attempts'])
QUEUE_UNBAN = r.hgetall('F2B_QUEUE_UNBAN') QUEUE_UNBAN = r.hgetall('F2B_QUEUE_UNBAN')
if QUEUE_UNBAN: if QUEUE_UNBAN:
@ -290,9 +287,9 @@ def autopurge():
unban(str(net)) unban(str(net))
for net in bans.copy(): for net in bans.copy():
if bans[net]['attempts'] >= MAX_ATTEMPTS: if bans[net]['attempts'] >= MAX_ATTEMPTS:
NET_BAN_TIME = BAN_TIME if not BAN_TIME_INCREMENT else BAN_TIME * 2 ** bans[net]['ban_counter'] NET_BAN_TIME = calcNetBanTime(bans[net]['ban_counter'])
TIME_SINCE_LAST_ATTEMPT = time.time() - bans[net]['last_attempt'] TIME_SINCE_LAST_ATTEMPT = time.time() - bans[net]['last_attempt']
if TIME_SINCE_LAST_ATTEMPT > NET_BAN_TIME or TIME_SINCE_LAST_ATTEMPT > MAX_BAN_TIME: if TIME_SINCE_LAST_ATTEMPT > NET_BAN_TIME:
unban(net) unban(net)
def mailcowChainOrder(): def mailcowChainOrder():
@ -306,6 +303,16 @@ def mailcowChainOrder():
if quit_now: return if quit_now: return
quit_now, exit_code = tables.checkIPv6ChainOrder() quit_now, exit_code = tables.checkIPv6ChainOrder()
def calcNetBanTime(ban_counter):
global f2boptions
BAN_TIME = int(f2boptions['ban_time'])
MAX_BAN_TIME = int(f2boptions['max_ban_time'])
BAN_TIME_INCREMENT = bool(f2boptions['ban_time_increment'])
NET_BAN_TIME = BAN_TIME if not BAN_TIME_INCREMENT else BAN_TIME * 2 ** ban_counter
NET_BAN_TIME = max([BAN_TIME, min([NET_BAN_TIME, MAX_BAN_TIME])])
return NET_BAN_TIME
def isIpNetwork(address): def isIpNetwork(address):
try: try:
ipaddress.ip_network(address, False) ipaddress.ip_network(address, False)