出现这个问题是因为应用程序使用了特殊端口，修改端口就可以解决。

特殊端口列表

A security change has been made in Adobe Flash Player 9.0.115.0 to block commonly reserved ports (to prevent malicious activity).
If a port number is specified at the end of a URL (such as http://www.adobe.com:80), the port will be checked against a list of commonly reserved ports.
If the port matches the following list, the network request will be rejected and a securityError event will be fired.
The following ports are considered reserved:

• 1 tcpmux  
• 7 echo  
• 9 discard  
• 11 systat  
• 13 daytime  
• 15 netstat  
• 17 qotd  
• 19 chargen  
• 20 ftp data  
• 21 ftp control  
• 22 ssh  
• 23 telnet  
• 25 smtp  
• 37 time  
• 42 name  
• 43 nicname  
• 53 domain  
• 77 priv-rjs  
• 79 finger  
• 87 ttylink  
• 95 supdup  
• 101 hostriame  
• 102 iso-tsap  
• 103 gppitnp  
• 104 acr-nema  
• 109 POP2  
• 110 POP3  
• 111 sunrpc  
• 113 auth  
• 115 sftp  
• 117 uucp-path  
• 119 NNTP  
• 123 NTP  
• 135 loc-srv / epmap  
• 139 netbios  
• 143 IMAP2  
• 179 BGP  
• 389 LDAP  
• 465 SMTP+SSL  
• 512 print / exec  
• 513 login  
• 514 shell  
• 515 printer  
• 526 tempo  
• 530 courier  
• 531 chat  
• 532 netnews  
• 540 uucp  
• 556 remotefs  
• 563 NNTP+SSL  
• 587 submission  
• 601 syslog  
• 636 LDAP+SSL  
• 993 IMAP+SSL  
• 995 POP3+SSL  
• 2049 nfs  
• 4045 lockd  
• 6000 X11  

Flex Error #2156问题