Skip to content
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.

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

nat: Add flag for specified range in DNAT #270

Merged
merged 1 commit into from
Aug 30, 2024

Conversation

a-ilin
Copy link
Contributor

@a-ilin a-ilin commented Aug 29, 2024

The current implementation of NAT lacks the flag for specified ranges: https://github.com/torvalds/linux/blob/master/net/netfilter/nf_nat_core.c#L525

Example nft command: meta l4proto tcp dnat to 10.200.45.6:9080

  [ meta load l4proto => reg 1 ]
  [ cmp eq reg 1 0x00000006 ]
  [ immediate reg 1 0x062dc80a ]
  [ immediate reg 2 0x00007823 ]
  [ nat dnat ip addr_min reg 1 proto_min reg 2 flags 0x2 ]

This PR adds specified ranges parameter in NAT.

Example: meta l4proto tcp dnat to 10.200.45.6:9080

  [ meta load l4proto => reg 1 ]
  [ cmp eq reg 1 0x00000006 ]
  [ immediate reg 1 0x062dc80a ]
  [ immediate reg 2 0x00007823 ]
  [ nat dnat ip addr_min reg 1 proto_min reg 2 flags 0x2 ]
@stapelberg stapelberg merged commit 7a6c4ef into google:main Aug 30, 2024
2 checks passed
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

2 participants