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-rw-r--r--openbsc/src/nat/bsc_nat.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/openbsc/src/nat/bsc_nat.c b/openbsc/src/nat/bsc_nat.c
index 31009bb30..c7d97aa45 100644
--- a/openbsc/src/nat/bsc_nat.c
+++ b/openbsc/src/nat/bsc_nat.c
@@ -731,9 +731,17 @@ static int forward_sccp_to_msc(struct bsc_connection *bsc, struct msgb *msg)
case SCCP_MSG_TYPE_IT:
con = patch_sccp_src_ref_to_msc(msg, parsed, bsc);
if (con) {
- con_bsc = con->bsc;
- con_msc = con->msc_con;
- con_filter = con->con_local;
+ filter = bsc_nat_filter_dt(bsc, msg, con, parsed);
+ if (filter == 0) {
+ con_bsc = con->bsc;
+ con_msc = con->msc_con;
+ con_filter = con->con_local;
+ } else {
+ LOGP(DNAT, LOGL_ERROR, "Should drop the connection.\n");
+ con_bsc = con->bsc;
+ con_msc = con->msc_con;
+ con_filter = con->con_local;
+ }
}
break;
case SCCP_MSG_TYPE_RLC: