- solve scoping issues when multiple values are used, thanks Daniel Dickinson
- ignore src_port/dest_port for proto icmp rules, ignore icmp_type for non-icmp rules
- properly handle icmp when proto is given in numerical form (1, 58)
- support negated icmp types
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27500 3c298f89-4303-0410-b956-a3cf2f4a3e73
- allow multiple ports, protocols, macs, icmp types per rule
- implement "limit" and "limit_burst" options for rules
- implement "extra" option to rules and redirects for passing arbritary flags to iptables
- implement negations for "src_port", "dest_port", "src_dport", "src_mac", "proto" and "icmp_type" options
- allow wildcard (*) "src" and "dest" options in rules to allow specifying "any" source or destination
- validate symbolic icmp-type names against the selected iptables binary
- properly handle forwarded ICMPv6 traffic in the default configuration
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27317 3c298f89-4303-0410-b956-a3cf2f4a3e73
Two examples of potentially useful configurations (commented out, of course):
(a) map the ssh service running on the firewall to 22001 externally, without modifying the configuration of the daemon itself. this allows port 22 on the WAN side to then be port-forwarded to a
LAN-based machine if desired, or if not, simply obscures the port from external attack.
(b) allow IPsec/ESP and ISAKMP (UDP-based key exchange) to happen by default. useful for most modern VPN clients you might have on your WAN.
Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26805 3c298f89-4303-0410-b956-a3cf2f4a3e73
Allow a redirect like:
config redirect
option src 'wan'
option dest 'lan'
option src_dport '22001'
option dest_port '22'
option proto 'tcp'
note the absence of the "dest_ip" field, meaning to terminate the connection on the firewall itself.
This patch makes three changes:
(1) moves the conntrack module into the conntrack package (but not any of the conntrack_* helpers).
(2) fixes a bug where the wrong table is used when the "dest_ip" field is absent.
(3) accepts incoming connections on the destination port on the input_ZONE table, but only for DNATted
connections.
In the above example,
ssh -p 22 root@myrouter
would fail from the outside, but:
ssh -p 22001 root@myrouter
would succeed. This is handy if:
(1) you want to avoid ssh probes on your router, or
(2) you want to redirect incoming connections on port 22 to some machine inside your firewall, but
still want to allow firewall access from outside.
Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26617 3c298f89-4303-0410-b956-a3cf2f4a3e73
- support negations for src_ip, dest_ip, src_dip options in rules and redirects
- add NOTRACK target to rule sections, allows to define fine grained notrack rules
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23141 3c298f89-4303-0410-b956-a3cf2f4a3e73
- simplify masquerade rule setup
- remove various subshell invocations
- speedup fw() by not relying on xargs and pipes
- rework SNAT support - attach to dest zone, use src_dip/src_dport as snat source
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23024 3c298f89-4303-0410-b956-a3cf2f4a3e73
- fix possible endless loop when the family option is used for forwardings
- only generate forwarding rules in SNAT redirect sections if src_dip is specified
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22938 3c298f89-4303-0410-b956-a3cf2f4a3e73
