Correct "it's" to "its" where necessary

it's = it is
its = belonging to it

scripts/citrix-enum-apps.nse

@@ -73,7 +73,7 @@ action = function(host, port)
 
   --
   -- Packets were intercepted from the Citrix Program Neighborhood client
-  -- They are used to query a server for it's list of servers
+  -- They are used to query a server for its list of servers
   --
   -- We're really not interested in the responses to the first two packets
   -- The third response contains the list of published applications

scripts/citrix-enum-servers.nse

@@ -70,7 +70,7 @@ action = function(host, port)
 
   --
   -- Packets were intercepted from the Citrix Program Neighborhood client
-  -- They are used to query a server for it's list of published applications
+  -- They are used to query a server for its list of published applications
   --
   -- We're really not interested in the responses to the first two packets
   -- The third response contains the list of published applications

scripts/dns-nsec3-enum.nse

@@ -173,7 +173,7 @@ local function random_string()
 end
 
 -- generate a random hash with domains suffix
--- return both domain and it's hash
+-- return both domain and its hash
 local function generate_hash(domain, iter, salt)
   local rand_str = random_string()
   local random_domain = rand_str .. "." .. domain

scripts/http-slowloris-check.nse

@@ -19,7 +19,7 @@ the final CRLF. After 10 seconds, second connection sends
 additional header. Both connections then wait for server timeout.
 If second connection gets a timeout 10 or more seconds after the
 first one, we can conclude that sending additional header prolonged
-it's timeout and that the server is vulnerable to slowloris DoS attack.
+its timeout and that the server is vulnerable to slowloris DoS attack.
 
 You can specify custom http User-agent field with <code>http.useragent</code>
 script argument.

scripts/krb5-enum-users.nse

@@ -52,7 +52,7 @@ portrule = shortport.port_or_service( 88, {"kerberos-sec"}, {"udp","tcp"}, {"ope
 
 -- This an embryo of a Kerberos 5 packet creation and parsing class. It's very
 -- tiny class and holds only the necessary functions to support this script.
--- This class be factored out into it's own library, once more scripts make use
+-- This class be factored out into its own library, once more scripts make use
 -- of it.
 KRB5 = {
 

scripts/netbus-info.nse

@@ -11,7 +11,7 @@ the host and the NetBus service itself.
 The extracted host information includes a list of running
 applications, and the hosts sound volume settings.
 
-The extracted service information includes it's access control list
+The extracted service information includes its access control list
 (acl), server information, and setup. The acl is a list of IP
 addresses permitted to access the service. Server information
 contains details about the server installation path, restart

scripts/rmi-vuln-classloader.nse

@@ -93,7 +93,7 @@ Default configuration of RMI registry allows loading classes from remote URLs wh
   rmiArgs:addRaw(bin.pack("H", argsRaw));
 
   -- reference: java/rmi/dgc/DGCImpl_Stub.java and java/rmi/dgc/DGCImpl_Skel.java
-  -- we are calling DGC's (it's objectId is 2) method with opnum 0
+  -- we are calling DGC's (its objectId is 2) method with opnum 0
   -- DCG's hashcode is f6b6898d8bf28643 hex or -669196253586618813 dec
   local status, j_array = registry.out:writeMethodCall(registry.out, 2, "f6b6898d8bf28643", 0, rmiArgs);
   local status, retByte = registry.out.dis:readByte();

scripts/vuze-dht-info.nse

@@ -23,7 +23,7 @@ Retrieves some basic information, including protocol version from a Vuze filesha
 -- |   Network id: Stable (0)
 -- |_  Instance id: 2260473691
 --
--- As Vuze doesn't have a default port for it's DHT service, this script has
+-- As Vuze doesn't have a default port for its DHT service, this script has
 -- some difficulties in determining when to run. Most scripts are triggered by
 -- either a default port or a fingerprinted service. To get around this, there
 -- are two options: