Test SWID REST API ins tnc/tnccs-20-pdp scenarios

testing/tests/tnc/tnccs-20-pdp-pt-tls/hosts/alice/etc/iptables.rules

@@ -5,6 +5,10 @@
 -P OUTPUT DROP
 -P FORWARD DROP
 
+# open loopback interface
+-A INPUT  -i lo -j ACCEPT
+-A OUTPUT -o lo -j ACCEPT
+
 # allow PT-TLS 
 -A INPUT  -i eth0 -p tcp --dport 271 -j ACCEPT
 -A OUTPUT -o eth0 -p tcp --sport 271 -j ACCEPT