Rename scripts (almost all of them) to make their names more consistent and

make them look better in output. The full list of changes is
  anonFTP => ftp-anon
  ASN => asn-query
  brutePOP3 => pop3-brute
  bruteTelnet => telnet-brute
  daytimeTest => daytime
  dns-safe-recursion-port => dns-random-srcport
  dns-safe-recursion-txid => dns-random-txid
  dns-test-open-recursion => dns-recursion
  ftpbounce => ftp-bounce
  HTTPAuth => http-auth
  HTTP_open_proxy => http-open-proxy
  HTTPpasswd => http-passwd
  HTTPtrace => http-trace
  iax2Detect => iax2-version
  ircServerInfo => irc-info
  ircZombieTest => irc-zombie
  MSSQLm => ms-sql-info
  MySQLinfo => mysql-info
  popcapa => pop3-capabilities
  PPTPversion => pptp-version
  promiscuous => sniffer-detect
  RealVNC_auth_bypass => realvnc-auth-bypass
  robots => robots.txt
  showHTMLTitle => html-title
  showOwner => identd-owners
  skype_v2-version => skypev2-version
  smb-enumdomains => smb-enum-domains
  smb-enumsessions => smb-enum-sessions
  smb-enumshares => smb-enum-shares
  smb-enumusers => smb-enum-users
  smb-serverstats => smb-server-stats
  smb-systeminfo => smb-system-info
  SMTPcommands => smtp-commands
  SMTP_openrelay_test => smtp-open-relay
  SNMPcommunitybrute => snmp-brute
  SNMPsysdescr => snmp-sysdescr
  SQLInject => sql-injection
  SSH-hostkey => ssh-hostkey
  SSHv1-support => sshv1
  SSLv2-support => sslv2
  strangeSMTPport => smtp-strangeport
  UPnP-info => upnp-info
  xamppDefaultPass => xampp-default-auth
  zoneTrans => zone-transfer

scripts/dns-recursion.nse

@@ -0,0 +1,39 @@
+
+description = [[
+Checks if a DNS server allows queries for third-party names.
+
+It is expected that recursion will be enabled on your own internal nameservers.
+]]
+
+author = "Felix Groebert <felix@groebert.org>"
+
+license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
+
+categories = {"default", "intrusive"}
+
+require "bit"
+require "comm"
+require "shortport"
+
+portrule = shortport.portnumber(53, "udp")
+
+action = function(host, port)
+
+    -- generate dns query, Transaction-ID 0xdead, www.wikipedia.org (type A, class IN)
+	local request = string.char(0xde, 0xad, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03) ..  "www" .. string.char(0x09) .. "wikipedia" .. string.char(0x03) ..  "org" .. string.char(0x00, 0x00, 0x01, 0x00, 0x01)
+
+	local status, result = comm.exchange(host, port, request, {proto="udp"})
+
+	if not status then
+		return
+	end
+
+    -- parse response for dns flags
+    if (bit.band(string.byte(result,3), 0x80) == 0x80
+    and bit.band(string.byte(result,4), 0x85) == 0x80)
+    then
+		return "Recursion appears to be enabled"
+    end
+
+	return
+end