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add opt-in configuration for incoming Related connections through 'gateway_allow_incoming_related_state' #3

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merged 1 commit into from
May 15, 2023
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add opt-in configuration for incoming Related connections through 'gateway_allow_incoming_related_state' #3

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10 changes: 8 additions & 2 deletions usr/bin/whonix-gateway-firewall
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Original file line number Diff line number Diff line change
Expand Up @@ -379,8 +379,14 @@ ipv4_input_rules() {
## Traffic on the loopback interface is accepted.
$iptables_cmd -A INPUT -i lo -j ACCEPT

## Established incoming connections are accepted.
$iptables_cmd -A INPUT -m state --state ESTABLISHED -j ACCEPT
## Established incoming connections are always accepted.
## Optionally, allow Related incoming connections when
## GATEWAY_ALLOW_INCOMING_RELATED_STATE mode is enabled.
if [ "$GATEWAY_ALLOW_INCOMING_RELATED_STATE" = "1" ]; then
$iptables_cmd -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
else
$iptables_cmd -A INPUT -m state --state ESTABLISHED -j ACCEPT
fi

## Drop all incoming ICMP traffic by default.
## All incoming connections are dropped by default anyway, but should a user
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