1) What? Asynchronous/synchronous communication is a term used to describe 2 way communication over physical medium. Syslog-ng message relaying is one way and over tcp or udp.

2) Yes syslog-ng will send the unsent messages. You need the premium version for this feature.

3) You can use vpn tunnels or some other type of tunnel for this. Syslog-ng does not have any built-in transport encryption.

4) If youre asking are messages forwarded to remote syslog-ng server as soon as theyre received, it can be configured this way yes. Or it can buffer them and send in bursts.

Sent: Tuesday, May 25, 2010 2:20:58 AM
From: Dyne Lai <dynelai@gmail.com>
To: syslog-ng@lists.balabit.hu
Subject: [syslog-ng] Quick Questions 
Hi Syslog-ng Developers,

I have a few general questions regarding syslog-ng as below.
1) What is the type of transmission (Asynchronous/Synchronous) used
for the transfer of log messages between server and remote client?

2) I understand that Syslog-ng is able to store unsent messages from
remote client to server in the local hardisk during network/system
outrage. Will syslog-ng be able to resume with the unsent messages
upon the revive of the network/system? If possible, how can we
configure/setup to achieve that?

3) In view of security, how can we configure remote client and server
to perform authentication (using X.509 certificates) during log
message forwarding?

4) Is the forwarding of log message between remote client and server
consider real-time? (assume syn=0)

Do pardon if the questions appears ignorant.Thanks for the time!

Best Regards,
Dyne Lai
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