Skip to content
This repository has been archived by the owner on Jan 23, 2022. It is now read-only.

[release-1.5] istio-iptables: Replace socket match with conntrack match #281

Open
wants to merge 1 commit into
base: release-1.5
Choose a base branch
from
Open

[release-1.5] istio-iptables: Replace socket match with conntrack match #281

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 2 additions & 3 deletions tools/packaging/common/istio-iptables.sh
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -422,7 +422,7 @@ if [ -n "${INBOUND_PORTS_INCLUDE}" ]; then
if [ "${INBOUND_INTERCEPTION_MODE}" = "TPROXY" ]; then
# If an inbound packet belongs to an established socket, route it to the
# loopback interface.
iptables -t mangle -A ISTIO_INBOUND -p tcp -m socket -j ISTIO_DIVERT || echo "No socket match support"
iptables -t mangle -A ISTIO_INBOUND -p tcp -m conntrack --ctstate RELATED,ESTABLISHED -j ISTIO_DIVERT || echo "No conntrack match support"
# Otherwise, it's a new connection. Redirect it using TPROXY.
iptables -t mangle -A ISTIO_INBOUND -p tcp -j ISTIO_TPROXY
else
Expand All @@ -432,8 +432,7 @@ if [ -n "${INBOUND_PORTS_INCLUDE}" ]; then
# User has specified a non-empty list of ports to be redirected to Envoy.
for port in ${INBOUND_PORTS_INCLUDE}; do
if [ "${INBOUND_INTERCEPTION_MODE}" = "TPROXY" ]; then
iptables -t mangle -A ISTIO_INBOUND -p tcp --dport "${port}" -m socket -j ISTIO_DIVERT || echo "No socket match support"
iptables -t mangle -A ISTIO_INBOUND -p tcp --dport "${port}" -m socket -j ISTIO_DIVERT || echo "No socket match support"
iptables -t mangle -A ISTIO_INBOUND -p tcp --dport "${port}" -m conntrack --ctstate RELATED,ESTABLISHED -j ISTIO_DIVERT || echo "No conntrack match support"
iptables -t mangle -A ISTIO_INBOUND -p tcp --dport "${port}" -j ISTIO_TPROXY
else
iptables -t nat -A ISTIO_INBOUND -p tcp --dport "${port}" -j ISTIO_IN_REDIRECT
Expand Down