![]() ![]() Recipient email address: change to 127.0.0.1įTP transmits files in plain text, but with Stunnel the FTP transmission also can be safe. Sending email address: change to 127.0.0.1 When finish the configuration, you also need to match the client side to it: If there are multiple email transmissions to be encrypted, you need to add the corresponding configurations of POP3 and SMTP. Suppose that you have a mail box and the server IP is 202.108.44.153, the configuration is as follows: In these configurations, the client side is on the local with IP 127.0.0.1 the server side is on an extranet server with IP 202.151.90.28.Įncrypted email transmission requires protecting the both process of sending and reception, so you need to encrypt the transmission method of POP3 and SMTP. nf configuration is comparatively simple, the following are some common application configurations. It also has a requirement on the bandwidth speed of the server because the encrypted data need to be decrypted via the server side.īoth the client side and server side contain the configuration file nf, the format is as below:Ĭonnect = destination server IP: destination port Note: It is required to have a server with management authorization on extranet to run the Server program. exe file in Start Menu to run the program automatically at every boot Change the network connection configuration of corresponding application on local Īfter configuration, you may create a shortcut of the. ![]() Download the server side program ( ) and then unzip to a server on extranet.Download the client side program ( ) and then unzip to the local category C:\Program Files.The following will introduce how to use this tool to encrypt data. You just need to install the server side program on a server outside your LAN, the data should be safe in the process of encryption transmission in LAN. Stunnel program takes the Client/Server pattern – transmitting to a designated server side for decrypt after encrypting data on the client side, and then retransmitting to the destination server. Stunnel can allow you to secure non-SSL aware daemons and protocols (like POP, IMAP, LDAP, etc) by having Stunnel provide the encryption, requiring no changes to the daemon's code. Stunnel () is a free program that allows you to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows. In order to protect the important data transmitted over LAN, you may use the “Stunnel” tool to encrypt your data. In other words, however, those information which can be captured is supposed to be unsafe.Īs shown in the figure below, in a common network data are transmitted without protection, important information would be listened easily if you meet with network attack. Using Stunnel to encrypt your network - Colasoft Capsa Help Using Stunnel to Encrypt Your NetworkĬolasoft Capsa is able to capture the important information unencrypted in LAN, such as email message, FTP transfers and HTTP requests. ![]()
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