36 Commits

Author SHA1 Message Date
Quentin McGaw ec24ffdfd8 hotfix(firewall): save and restore behavior fixed
- restore if IPv4 set all policies fails
- fix deadlock when using iptables custom rules
- fix setting ipv6 rules when running runMixedIptablesInstruction
2026-02-28 14:37:58 +00:00
Quentin McGaw 2bb4deccd5 feat(firewall): atomic iptables operations
- all operations rollback on failure
- disabling the firewall means rolling back to its state before enabling it
- aligns with nftables atomicity feature
2026-02-26 22:58:52 +00:00
Quentin McGaw d21953f62e chore(firewall): split apart iptables specific code in internal/firewall/iptables 2026-02-25 04:23:53 +00:00
Quentin McGaw 99e9bc87cf fix(firewall): deduplicate VPN address accept rule for multiple default routes with the same network interface 2024-10-06 09:48:07 +00:00
Quentin McGaw 9ef14ee070 fix(firewall): deduplicate ipv6 multicast output accept rules 2024-10-06 09:46:47 +00:00
Quentin McGaw c0621bf381 chore(lint): upgrade linter to v1.56.2 2024-03-21 17:02:11 +00:00
Quentin McGaw 4105f74ce1 feat(portforward): port redirection with VPN_PORT_FORWARDING_LISTENING_PORT 2023-11-23 08:37:43 +00:00
Quentin McGaw 4ea474b896 fix(routing): change firewall only for matching ip families 2023-09-20 10:45:13 +00:00
Quentin McGaw 0a29337c3b chore(all): replace net.IP with netip.Addr 2023-05-20 20:06:12 +00:00
Quentin McGaw d21a943779 chore(all): use netip.Prefix for ip networks
- remove usage of `net.IPNet`
- remove usage of `netaddr.IPPrefix`
2023-04-27 13:42:50 +00:00
Quentin McGaw 4ba159e483 chore(all): review error wrappings
- remove repetitive `cannot` and `failed` prefixes
- rename `unmarshaling` to `decoding`
2023-04-01 16:57:18 +00:00
EkilDeew 875690ab18 feat(network): enable ipv6 connection and tunneling (#1114)
Co-authored-by: Quentin McGaw <quentin.mcgaw@gmail.com>
2022-09-13 17:18:10 -07:00
Quentin McGaw 578ef768ab chore(all): return concrete types, accept interfaces
- Remove exported interfaces unused locally
- Define interfaces to accept arguments
- Return concrete types, not interfaces
2022-06-11 01:34:30 +00:00
Quentin McGaw f99d5e8656 feat(firewall): use all default routes
- Accept output traffic from all default routes through VPN interface
- Accept output from all default routes to outbound subnets
- Accept all input traffic on ports for all default routes
- Add IP rules for all default routes
2022-03-13 13:26:33 +00:00
Quentin McGaw 920ad8b54b chore(errors): review all errors in codebase 2022-02-20 02:58:16 +00:00
Quentin McGaw (desktop) bec8ff27ae Feat: OPENVPN_INTERFACE defaulting to tun0
- Fix: custom config with custom network interface name for firewall
- Keep VPN tunnel interface in firewall state
- Vul fix: only allow traffic through vpn interface when needed
- Adapt code to adapt to network interface name
- Remove outdated TUN and TAP constants
2021-08-19 23:22:55 +00:00
Quentin McGaw (desktop) 2ddc784965 Maint: firewall package interface rework
- return concrete struct type
- split interface is sub-interfaces
2021-07-23 19:12:16 +00:00
Quentin McGaw (desktop) 21f4cf7ab5 Maint: do not mock os functions
- Use filepaths with /tmp for tests instead
- Only mock functions where filepath can't be specified such as user.Lookup
2021-07-23 16:06:19 +00:00
Quentin McGaw 282c1e53ec Clear firewall rules on shutdown, fix #276 2021-04-19 14:27:38 +00:00
Quentin McGaw 7ba98af1cc Feature/Bugfix: IPv6 blocking (#428)
- Feature/Bugfix: Block all IPv6 traffic with `ip6tables` by default
- Feature: Adapt existing firewall code to handle IPv4 and IPv6, depending on user inputs and environment
- Maintenance: improve error wrapping in the firewall package
2021-04-19 09:24:46 -04:00
Michael Robbins 69f9461bcd Fix: restricting route listing to IPv4 only (#419) 2021-04-11 08:50:59 -04:00
Michael Robbins 8230596f98 Feature: uplift the 'localSubnet' concept to cover all local ethernet interfaces (#413) 2021-04-09 13:08:20 -04:00
Quentin McGaw 096a9c5fc0 Fix #289 2020-11-06 02:54:27 +00:00
Quentin McGaw db64dea664 Fix #273 (#277), adding FIREWALL_OUTBOUND_SUBNETS 2020-10-29 19:23:44 -04:00
Quentin McGaw ed4fcc17b3 Routing improvements (#268)
- Fixes #82 
- Remove `EXTRA_SUBNETS`
- Remove no longer needed iptables rules
- Reduce routing interface arity
- Routing setup is done in main.go instead of in the firewall
- Routing setup gets reverted at shutdown
2020-10-24 18:05:11 -04:00
Quentin McGaw ea3b3bc8a3 Netlink Go library to interact with IP routes (#267) 2020-10-22 18:55:28 -04:00
Quentin McGaw 9c73faaaeb Add linters and fix lint issues 2020-10-20 02:45:28 +00:00
Quentin McGaw c4354871f7 Single connection written to openvpn configuration (#258)
- From now only a single OpenVPN connection is written to the OpenVPN configuration file
- If multiple connections are matched given the user parameters (i.e. city, region), it is picked at pseudo random using the current time as the pseudo random seed.
- Not relying on Openvpn picking a random remote address, may refer to #229 
- Program is aware of which connection is to be used, in order to use its matching CN for port forwarding TLS verification with PIA v4 servers, see #236 
- Simplified firewall mechanisms
2020-10-12 15:29:58 -04:00
Quentin McGaw f95f6201b1 Rename repo to Gluetun, refers to #112 2020-07-26 12:07:06 +00:00
Quentin McGaw a13be8f45e Firewall simplifications
- Only a map of allowed input port to interface
- port forwarded is in the map of allowed input ports
- port forwarded has the interface tun0 in this map
- Always allow tcp and udp for allowed input ports
- Port forward state is in openvpn looper only
- Shadowsocks input port allowed on default interface only
- Tinyproxy input port allowed on default interface only
2020-07-20 00:39:59 +00:00
Quentin McGaw 85bd4f2e8d Get default route and local subnet only at start 2020-07-20 00:35:53 +00:00
Quentin McGaw 4a7d341c57 Fixing extra subnets firewall rules
- Fix #194
- Fix #190
- Refers to #188
2020-07-13 02:17:49 +00:00
Quentin McGaw 4cd6b33044 Add missing subnets setup, fixes #190
- Also setup subnet routes when firewall is disabled
2020-07-12 21:21:41 +00:00
Quentin McGaw 0731b1cb82 Remove horrible firewall debug 1 printing 2020-07-12 19:22:48 +00:00
Quentin McGaw 6afa4f69a0 Fix routing reading issues
- Detect VPN gateway properly
- Fix local subnet detection, refers to #188
- Split LocalSubnet from DefaultRoute (2 different routes actually)
2020-07-12 19:05:48 +00:00
Quentin McGaw b1596bc7e4 Firewall refactoring
- Ability to enable and disable rules in various loops
- Simplified code overall
- Port forwarding moved into openvpn loop
- Route addition and removal improved
2020-07-11 21:03:55 +00:00