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Diffstat (limited to 'src/libcharon/plugins/socket_default/socket_default_socket.c')
-rw-r--r--src/libcharon/plugins/socket_default/socket_default_socket.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/src/libcharon/plugins/socket_default/socket_default_socket.c b/src/libcharon/plugins/socket_default/socket_default_socket.c
index aa3d795fc..494bf57b1 100644
--- a/src/libcharon/plugins/socket_default/socket_default_socket.c
+++ b/src/libcharon/plugins/socket_default/socket_default_socket.c
@@ -692,6 +692,18 @@ socket_default_socket_t *socket_default_socket_create()
this->natt = 0;
}
+ if ((this->port && this->port < 1024) || (this->natt && this->natt < 1024))
+ {
+ if (!lib->caps->keep(lib->caps, CAP_NET_BIND_SERVICE))
+ {
+ /* required to bind ports < 1024 */
+ DBG1(DBG_NET, "socket-default plugin requires CAP_NET_BIND_SERVICE "
+ "capability");
+ destroy(this);
+ return NULL;
+ }
+ }
+
/* we allocate IPv6 sockets first as that will reserve randomly allocated
* ports also for IPv4. On OS X, we have to do it the other way round
* for the same effect. */