Commit Graph

5 Commits (b370274b29529b308c55de108b0c6156586fc632)

Author SHA1 Message Date
Brad Fitzpatrick 7a5263e6d0 util/linuxfw: rename ErrorFWModeNotSupported
Go style is for error variables to start with "err" (or "Err")
and for error types to end in "Error".

Updates #cleanup

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
1 year ago
KevinLiang10 ae63c51ff1 wgengine/router: add auto selection heuristic for iptables/nftables
This commit replaces the TS_DEBUG_USE_NETLINK_NFTABLES envknob with
a TS_DEBUG_FIREWALL_MODE that should be set to either 'iptables' or
'nftables' to select firewall mode manually, other wise tailscaled
will automatically choose between iptables and nftables depending on
environment and system availability.

updates: #319
Signed-off-by: KevinLiang10 <kevinliang@tailscale.com>
1 year ago
KevinLiang10 a3c7b21cd1 util/linuxfw: add nftables support
This commit adds nftable rule injection for tailscaled. If tailscaled is
started with envknob TS_DEBUG_USE_NETLINK_NFTABLES = true, the router
will use nftables to manage firewall rules.

Updates: #391

Signed-off-by: KevinLiang10 <kevinliang@tailscale.com>
1 year ago
KevinLiang10 243ce6ccc1 util/linuxfw: decoupling IPTables logic from linux router
This change is introducing new netfilterRunner interface and moving iptables manipulation to a lower leveled iptables runner.

For #391

Signed-off-by: KevinLiang10 <kevinliang@tailscale.com>
1 year ago
Andrew Dunham ba48ec5e39 util/linuxfw: initial implementation of package
This package is an initial implementation of something that can read
netfilter and iptables rules from the Linux kernel without needing to
shell out to an external utility; it speaks directly to the kernel using
syscalls and parses the data returned.

Currently this is read-only since it only knows how to parse a subset of
the available data.

Signed-off-by: Andrew Dunham <andrew@tailscale.com>
Change-Id: Iccadf5dcc081b73268d8ccf8884c24eb6a6f1ff5
2 years ago