Update xmas.md

added requested changes.

Author: d78ui98

documentation/modules/auxiliary/scanner/portscan/xmas.md

@@ -2,19 +2,13 @@
 
 This module is used to determine if the ports on target machine are closed. It sends probes containing the FIN, PSH and URG flags. Scan is faster and stealthier compared to some other scans. Following action are performed depending on the state of ports -
 
-#### Open Port:
-Detects an open port via no response to the segment
+#### OPEN|FILTERED Port:
+Detects open|filtered port via no response to the segment
 
 #### Closed Port: 
-Detects that a closed via a RST received in response to the FIN
+Detects a closed port via a RST received in response to the FIN
 
-#### Filtered Port:
-Cannot distinguish between a filtered port and an open port
-
-#### Unfiltered Port:
-Cannot distinguish between an unfiltered port and a non-stateful filtered port
-
-# Vulnerable Application
+# Required Permissions
 
   XMAS scan requires the use of raw sockets, and thus cannot be performed from some Windows
   systems (Windows XP SP 2, for example). On Unix and Linux, raw socket manipulations require root privileges.