wifipineapple-openwrt/package/firewall/files/lib
Jo-Philipp Wich b457e4cfc9 firewall: allow local redirection of ports
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
2011-04-12 20:03:59 +00:00
..
config.sh [package] firewall: change the order of IPv4/IPv6 address detection, fixes mixed notation v6 improperly detected as v4 address 2010-05-31 01:34:47 +00:00
core.sh [package] firewall: make invalid redirects and duplicate zones non-fatal, print a notice and discard them 2010-09-16 11:47:35 +00:00
core_forwarding.sh [package] firewall: 2010-09-11 20:04:34 +00:00
core_init.sh [package] firewall: move include sourcing into a subshell, this makes the firewall init immune against exit in the include scripts 2011-03-02 19:20:29 +00:00
core_interface.sh [package] firewall: prevent duplicate values in interface state vars 2011-03-30 20:29:17 +00:00
core_redirect.sh firewall: allow local redirection of ports 2011-04-12 20:03:59 +00:00
core_rule.sh [package] firewall: fix wrong rule order if multiple protocols are used 2011-01-27 22:19:53 +00:00
fw.sh [package] fireall: 2010-09-28 10:42:56 +00:00
uci_firewall.sh [package] firewall: 2010-05-01 18:22:01 +00:00