diff --git a/doc/configuration.txt b/doc/configuration.txt
index 1a6fbcf..af23d31 100644
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -6966,6 +6966,10 @@
   backend. It can be used to use a specific farm when the nominal one is full.
   See also the "fe_conn", "queue" and "be_sess_rate" criteria.
 
+be_id <integer>
+  Applies to the backend's id. Can be used in frontends to check from which
+  backend it was called.
+
 be_sess_rate <integer>
 be_sess_rate(backend) <integer>
   Returns true when the sessions creation rate on the backend matches the
@@ -7329,6 +7333,9 @@
             tcp-request content reject if { src_update_count gt 3 }
             server local 127.0.0.1:22
 
+srv_id <integer>
+  Applies to the server's id. Can be used in frontends or backends.
+
 srv_is_up(<server>)
 srv_is_up(<backend>/<server>)
   Returns true when the designated server is UP, and false when it is either
diff --git a/src/backend.c b/src/backend.c
index ff06d2c..bd20749 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -1386,6 +1386,30 @@
 	return 1;
 }
 
+/* set test->i to the id of the backend */
+static int
+acl_fetch_be_id(struct proxy *px, struct session *l4, void *l7, int dir,
+                struct acl_expr *expr, struct acl_test *test) {
+
+	test->flags = ACL_TEST_F_READ_ONLY;
+
+	test->i = l4->be->uuid;
+
+	return 1;
+}
+
+/* set test->i to the id of the server */
+static int
+acl_fetch_srv_id(struct proxy *px, struct session *l4, void *l7, int dir,
+                struct acl_expr *expr, struct acl_test *test) {
+
+	test->flags = ACL_TEST_F_READ_ONLY;
+
+	test->i = l4->srv->puid;
+
+	return 1;
+}
+
 /* set test->i to the number of connections per second reaching the backend */
 static int
 acl_fetch_be_sess_rate(struct proxy *px, struct session *l4, void *l7, int dir,
@@ -1482,13 +1506,15 @@
 
 /* Note: must not be declared <const> as its list will be overwritten */
 static struct acl_kw_list acl_kws = {{ },{
-	{ "nbsrv",    acl_parse_int,   acl_fetch_nbsrv,     acl_match_int, ACL_USE_NOTHING },
-	{ "connslots", acl_parse_int,   acl_fetch_connslots, acl_match_int, ACL_USE_NOTHING },
-	{ "be_sess_rate", acl_parse_int, acl_fetch_be_sess_rate, acl_match_int, ACL_USE_NOTHING },
-	{ "be_conn", acl_parse_int, acl_fetch_be_conn, acl_match_int, ACL_USE_NOTHING },
-	{ "queue", acl_parse_int, acl_fetch_queue_size, acl_match_int, ACL_USE_NOTHING },
-	{ "avg_queue", acl_parse_int, acl_fetch_avg_queue_size, acl_match_int, ACL_USE_NOTHING },
-	{ "srv_is_up",    acl_parse_nothing,   acl_fetch_srv_is_up,  acl_match_nothing, ACL_USE_NOTHING },
+	{ "nbsrv",        acl_parse_int,     acl_fetch_nbsrv,          acl_match_int,     ACL_USE_NOTHING },
+	{ "connslots",    acl_parse_int,     acl_fetch_connslots,      acl_match_int,     ACL_USE_NOTHING },
+	{ "be_id",        acl_parse_int,     acl_fetch_be_id,          acl_match_int,     ACL_USE_NOTHING },
+	{ "be_sess_rate", acl_parse_int,     acl_fetch_be_sess_rate,   acl_match_int,     ACL_USE_NOTHING },
+	{ "be_conn",      acl_parse_int,     acl_fetch_be_conn,        acl_match_int,     ACL_USE_NOTHING },
+	{ "queue",        acl_parse_int,     acl_fetch_queue_size,     acl_match_int,     ACL_USE_NOTHING },
+	{ "avg_queue",    acl_parse_int,     acl_fetch_avg_queue_size, acl_match_int,     ACL_USE_NOTHING },
+	{ "srv_is_up",    acl_parse_nothing, acl_fetch_srv_is_up,      acl_match_nothing, ACL_USE_NOTHING },
+	{ "srv_id",       acl_parse_int,     acl_fetch_srv_id,         acl_match_int,     ACL_USE_NOTHING },
 	{ NULL, NULL, NULL, NULL },
 }};