Skip to content

Modify iptables rules to allow exgress traffic from within the container #85

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
brycelelbach wants to merge 1 commit into from
+21 −1
Closed

Modify iptables rules to allow exgress traffic from within the container #85

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
22 changes: 21 additions & 1 deletion v1/providers/shadeform/firewall.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -15,10 +15,26 @@
ufwDefaultAllowPort2222 = "ufw allow 2222/tcp"
ufwForceEnable = "ufw --force enable"

// Clear DOCKER-USER policy.
ipTablesResetDockerUserChain = "iptables -F DOCKER-USER"

Check failure on line 19 in v1/providers/shadeform/firewall.go

View workflow job for this annotation

GitHub Actions / Test and Lint 

File is not properly formatted (gofumpt)
ipTablesAllowDockerUserOutbound = "iptables -A DOCKER-USER -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT"

// Allow return traffic.
ipTablesAllowDockerUserOutbound = "iptables -A DOCKER-USER -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT"

// Allow containers to initiate outbound traffic (default bridge + user-defined bridges).
ipTablesAllowDockerUserOutboundInit0 = "iptables -A DOCKER-USER -i docker0 ! -o docker0 -j ACCEPT"
ipTablesAllowDockerUserOutboundInit1 = "iptables -A DOCKER-USER -i br+ ! -o br+ -j ACCEPT"

// Allow container-to-container on the same bridge.
ipTablesAllowDockerUserDockerToDocker0 = "iptables -A DOCKER-USER -i docker0 -o docker0 -j ACCEPT"
ipTablesAllowDockerUserDockerToDocker1 = "iptables -A DOCKER-USER -i br+ -o br+ -j ACCEPT"

// Allow inbound traffic on the loopback interface.
ipTablesAllowDockerUserInpboundLoopback = "iptables -A DOCKER-USER -i lo -j ACCEPT"

// Drop everything else.
ipTablesDropDockerUserInbound = "iptables -A DOCKER-USER -j DROP"

ipTablesReturnDockerUser = "iptables -A DOCKER-USER -j RETURN"
)

Expand Down Expand Up @@ -63,6 +79,10 @@
commands := []string{
ipTablesResetDockerUserChain,
ipTablesAllowDockerUserOutbound,
ipTablesAllowDockerUserOutboundInit0,
ipTablesAllowDockerUserOutboundInit1,
ipTablesAllowDockerUserDockerToDocker0,
ipTablesAllowDockerUserDockerToDocker1,
ipTablesAllowDockerUserInpboundLoopback,
ipTablesDropDockerUserInbound,
ipTablesReturnDockerUser, // Expected by Docker
Expand Down
Loading