diff --git a/sources/tech/20150205 Install Strongswan - A Tool to Setup IPsec Based VPN in Linux.md b/sources/tech/20150205 Install Strongswan - A Tool to Setup IPsec Based VPN in Linux.md
index ca909934fa..cd9ee43213 100644
--- a/sources/tech/20150205 Install Strongswan - A Tool to Setup IPsec Based VPN in Linux.md	
+++ b/sources/tech/20150205 Install Strongswan - A Tool to Setup IPsec Based VPN in Linux.md	
@@ -1,3 +1,4 @@
+wyangsun translating
 Install Strongswan - A Tool to Setup IPsec Based VPN in Linux
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 IPsec is a standard which provides the security at network layer. It consist of authentication header (AH) and encapsulating security payload (ESP) components. AH provides the packet Integrity and confidentiality is provided by ESP component . IPsec ensures the following security features at network layer.
@@ -110,4 +111,4 @@ via: http://linoxide.com/security/install-strongswan/
 本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
 
 [a]:http://linoxide.com/author/naveeda/
-[1]:https://www.strongswan.org/
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+[1]:https://www.strongswan.org/