mirror of
https://github.com/bol-van/zapret.git
synced 2024-11-15 11:08:34 +05:00
54 lines
1.5 KiB
Bash
54 lines
1.5 KiB
Bash
|
set_conntrack_liberal_mode()
|
||
|
|
{
|
||
|
|
[ -n "$SKIP_CONNTRACK_LIBERAL_MODE" ] || sysctl -w net.netfilter.nf_conntrack_tcp_be_liberal=$1
|
||
|
|
}
|
||
|
|
zapret_do_firewall()
|
||
|
|
{
|
||
|
|
linux_fwtype
|
||
|
|
|
||
|
|
[ "$1" = 1 -a -n "$INIT_FW_PRE_UP_HOOK" ] && $INIT_FW_PRE_UP_HOOK
|
||
|
|
[ "$1" = 0 -a -n "$INIT_FW_PRE_DOWN_HOOK" ] && $INIT_FW_PRE_DOWN_HOOK
|
||
|
|
|
||
|
|
case "$FWTYPE" in
|
||
|
|
iptables)
|
||
|
|
zapret_do_firewall_ipt "$@"
|
||
|
|
;;
|
||
|
|
nftables)
|
||
|
|
zapret_do_firewall_nft "$@"
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
|
||
|
|
# russian DPI sends RST,ACK with wrong ACK.
|
||
|
|
# this is sometimes treated by conntrack as invalid and connbytes fw rules do not pass RST packet to nfqws.
|
||
|
|
# switch on liberal mode on zapret firewall start and switch off on zapret firewall stop
|
||
|
|
# this is only required for processing incoming bad RSTs. incoming rules are only applied in autohostlist mode
|
||
|
|
# calling this after firewall because conntrack module can be not loaded before applying conntrack firewall rules
|
||
|
|
[ "$MODE_FILTER" = "autohostlist" -a "$MODE" != tpws -a "$MODE" != tpws-socks ] && set_conntrack_liberal_mode $1
|
||
|
|
|
||
|
|
[ "$1" = 1 -a -n "$INIT_FW_POST_UP_HOOK" ] && $INIT_FW_POST_UP_HOOK
|
||
|
|
[ "$1" = 0 -a -n "$INIT_FW_POST_DOWN_HOOK" ] && $INIT_FW_POST_DOWN_HOOK
|
||
|
|
|
||
|
|
return 0
|
||
|
|
}
|
||
|
|
zapret_apply_firewall()
|
||
|
|
{
|
||
|
|
zapret_do_firewall 1 "$@"
|
||
|
|
}
|
||
|
|
zapret_unapply_firewall()
|
||
|
|
{
|
||
|
|
zapret_do_firewall 0 "$@"
|
||
|
|
}
|
||
|
|
|
||
|
|
first_packets_for_mode()
|
||
|
|
{
|
||
|
|
# autohostlist and autottl modes requires incoming traffic sample
|
||
|
|
# always use conntrack packet limiter or nfqws will deal with gigabytes
|
||
|
|
local n
|
||
|
|
if [ "$MODE_FILTER" = "autohostlist" ]; then
|
||
|
|
n=$((6+${AUTOHOSTLIST_RETRANS_THRESHOLD:-3}))
|
||
|
|
else
|
||
|
|
n=6
|
||
|
|
fi
|
||
|
|
echo $n
|
||
|
|
}
|