Proxy SSL authentication in split SSL for client-side proxy agent resources with content insertion
A traffic management device (TMD), system, and processor-readable storage medium are directed to determining that an end-to-end encrypted session has been established between a client and an authentication server, intercepting and decrypting subsequent task traffic from the client, and forwarding the intercepted traffic toward a server. In some embodiments, a second connection between the TMD and server may be employed to forward the intercepted traffic, and the second connection may be unencrypted or encrypted with a different mechanism than the encrypted connection to the authentication server. The encrypted connection to the authentication server may be maintained following authentication to enable termination of the second connection if the client becomes untrusted, and/or to enable logging of client requests, connection information, and the like. In some embodiments, the TMD may act as a proxy to provide client access to a number of servers and/or resources.
1. A traffic management device for managing network traffic between a client device and a plurality of server devices, comprising:
a transceiver to send and receive data over a network; and
a processor, in communication with the transceiver, that performs actions, including:
obtaining a key associated with an encrypted first connection between the client device and an authentication server device, wherein the encrypted first connection is established using a two-way authentication between the client device and the authentication server device;
intercepting a message sent from the client device toward the authentication server device over the encrypted first connection;
performing an analysis of the intercepted message based on the key; and
selectively forwarding the intercepted message toward a determined server device based on the analysis, using a second connection between the traffic management device and the determined server device that is separate from communication with the authentication server device, while the encrypted first connection is actively maintained between the client device and the authentication server device.
2. The traffic management device of claim 1 , wherein the analysis of the intercepted message includes decrypting the intercepted message using one or more connection keys derived from the key.
3. The traffic management device of claim 1 , wherein the actions further include:
receiving from the authentication server device a token identifying the client device as authenticated by the two-way authentication; and
providing the token in the intercepted message forwarded to the determined server device.
4. The traffic management device of claim 1 , wherein the actions further include:
suspending the forwarding of the intercepted message to the determined server device, in response to receiving a request for a renegotiation of the encrypted first connection between the client device and the authentication server device; and
resuming the forwarding of the intercepted message to the determined server device, in response to receiving an indication of a completion of the renegotiation.
5. The traffic management device of claim 1 , wherein forwarding the intercepted message to the determined server device further includes encrypting the intercepted message prior to forwarding.
6. The traffic management device of claim 1 , wherein the actions further include forwarding the intercepted message to the authentication server device, to enable the authentication server device to log at least some information included in the intercepted message.
7. The traffic management device of claim 1 , wherein the actions further comprise:
receiving from the determined server device a response message to the forwarded intercepted message;
encrypting the response message based on the key; and
forwarding the encrypted response message to the client device, using the encrypted first connection.
8. A system for managing network traffic, comprising:
a plurality of server devices;
an authentication server device; and
a traffic management device in communication with the plurality of server devices, the authentication server device, and a client device, and configured to perform actions including:
obtaining a key associated with an encrypted first connection between the client device and the authentication server device, wherein the encrypted first connection is established using a two-way authentication between the client device and the authentication server device;
intercepting a message sent from the client device toward the authentication server device over the encrypted first connection;
performing an analysis of the intercepted message based on the key; and
selectively forwarding the intercepted message toward a determined server device based on the analysis, using a second connection between the traffic management device and the determined server device that is separate from communication with the authentication server device, while the encrypted first connection is actively maintained between the client device and the authentication server device.
9. The system of claim 8 , wherein the analysis of the intercepted message includes decrypting the intercepted message using one or more connection keys derived from the key, and wherein forwarding the intercepted message to the determined server device further includes re-encrypting the intercepted message prior to forwarding.
10. The system of claim 8 , wherein the actions further include:
receiving from the authentication server device a token identifying the client device as authenticated by the two-way authentication; and
providing the token in the intercepted message forwarded to the determined server device.
11. The system of claim 8 , wherein the actions further include:
suspending the forwarding of the intercepted message to the determined server device, in response to receiving a request for a renegotiation of the encrypted first connection between the client device and the authentication server device; and
resuming the forwarding of the intercepted message to the determined server device, in response to receiving an indication of a completion of the renegotiation.
12. The system of claim 8 , wherein the encrypted first connection is actively maintained between the client device and the authentication server device based on at least one keep alive message.
13. The system of claim 8 , wherein the actions further include forwarding the intercepted message to the authentication server device, to enable the authentication server device to log at least some information included in the intercepted message.
14. A processor readable non-transitory storage medium storing instructions that enable a processor to perform actions for managing network traffic between a client device and a plurality of server devices, comprising:
obtaining a key associated with an encrypted first connection between the client device and an authentication server device, wherein the encrypted first connection is established using a two-way authentication between the client device and the authentication server device;
intercepting a message sent from the client device toward the authentication server device over the encrypted first connection;
performing an analysis of the intercepted message based on the key; and
selectively forwarding the intercepted message toward a determined server device based on the analysis, using a second connection between the traffic management device and the determined server device that is separate from communication with the authentication server device, while the encrypted first connection is actively maintained between the client device and the authentication server device.
15. The processor readable non-transitory storage medium of claim 14 , wherein the actions further comprise:
receiving from the determined server device a response message to the forwarded intercepted message;
encrypting the response message based on the key; and
forwarding the encrypted response message to the client device, using the encrypted first connection.
16. The processor readable non-transitory storage medium of claim 14 , wherein the actions further include:
suspending the forwarding of the intercepted message to the determined server device, in response to receiving a request for a renegotiation of the encrypted first connection between the client device and the authentication server device; and
resuming the forwarding of the intercepted message to the determined server device, in response to receiving an indication of a completion of the renegotiation.
17. The processor readable non-transitory storage medium of claim 14 , wherein forwarding the intercepted message to the at least one server device further includes encrypting the intercepted message prior to forwarding.
18. The processor readable non-transitory storage medium of claim 14 , wherein the actions further include forwarding the intercepted message to the authentication server device, to enable the authentication server device to log at least some information included in the intercepted message.
19. The processor readable non-transitory storage medium of claim 14 , wherein the message sent from the client device includes a request for a particular resource available from the determined server device.
20. The processor readable non-transitory storage medium of claim 14 , wherein the message sent from the client device includes a request for access to a plurality of servers that include the determined server device.