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netfilter/iptcrdr.c: do not add MASQUERADE rule if iport==eport 

fixes #193
This commit is contained in:
Thomas Bernard 2016-03-08 10:29:47 +01:00
parent dc9eb0df1c
commit 688b13586c
2 changed files with 16 additions and 6 deletions
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5
miniupnpd/Changelog.txt
View File

@ -1,4 +1,7 @@
$Id: Changelog.txt,v 1.425 2016/02/20 19:11:58 nanard Exp $ $Id: Changelog.txt,v 1.426 2016/03/08 09:23:50 nanard Exp $
2016/03/08:
linux/netfilter: do not add MASQUERADE rule if ports are equals
2016/02/19: 2016/02/19:
set IPv6 Hop limit to 10 set IPv6 Hop limit to 10

17
miniupnpd/netfilter/iptcrdr.c
View File

@ -1,4 +1,4 @@
/* $Id: iptcrdr.c,v 1.58 2016/02/12 14:27:46 nanard Exp $ */ /* $Id: iptcrdr.c,v 1.59 2016/03/08 09:23:52 nanard Exp $ */
/* MiniUPnP project /* MiniUPnP project
* http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/ * http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
* (c) 2006-2016 Thomas Bernard * (c) 2006-2016 Thomas Bernard
@ -223,10 +223,17 @@ add_redirect_rule2(const char * ifname,
if(r >= 0) { if(r >= 0) {
add_redirect_desc(eport, proto, desc, timestamp); add_redirect_desc(eport, proto, desc, timestamp);
#ifdef ENABLE_PORT_TRIGGERING #ifdef ENABLE_PORT_TRIGGERING
/* TODO : check if this should be done only with UDP */ /* http://www.netfilter.org/documentation/HOWTO/NAT-HOWTO-6.html#ss6.3
r = addmasqueraderule(proto, eport, iaddr, iport, rhost/*, ifname*/); * The default behavior is to alter the connection as little
if(r < 0) { * as possible, within the constraints of the rule given by
syslog(LOG_NOTICE, "add_redirect_rule2(): addmasqueraderule returned %d", r); * the user.
* This means we won't remap ports unless we have to. */
if(iport != eport) {
/* TODO : check if this should be done only with UDP */
r = addmasqueraderule(proto, eport, iaddr, iport, rhost/*, ifname*/);
if(r < 0) {
syslog(LOG_NOTICE, "add_redirect_rule2(): addmasqueraderule returned %d", r);
}
} }
#endif /* ENABLE_PORT_TRIGGERING */ #endif /* ENABLE_PORT_TRIGGERING */
} }