Each license includes one year of free updates, and unlimited lifetime
technical support. Remember that each developer must have his own
design-time license.
General information
wodSSHServer is an SSH Server ActiveX component (but also Telnet Server ActiveX as well) that will give you ability to easily add
SSH2 (and SFTP) server capabilities to your application, as well as old TELNET server protocol. SSH protocol provides strong encryption of data, and
authentication of users over insecure networks, such as Internet. Using it is really
easy. Add it to your form (or create instance on the fly), use internal
methods to generate pair of keys for the server (or import existing ones from
other SSH servers) and start the server. From that moment, clients will be
able to connect to your server, and do the following
enter chat that you created for them,
start command prompt and execute commands inside (just as they would do
it from the console window),
start some program of their choice
use internally provided SFTP (secure ftp) server, or
open port forwarding for other programs
All of this, of course, can be adjusted by your needs. By default, server
will not allow anyone to login unless you specify so (using LoginPassword event that
is fired when someone wants to login to your server). Once connected, you will
get the information about service type user requests. At this point, you can
accept, reject or even change the service he requested. Or, you can just leave
him alone and not interfere with his actions at all.
Using wodSSHServer is ideal if you need server side of encrypted communication,
and don't want to hassle with certificates (used in SSL communication). Almost
everyone today has some sort of SSH client which can be used to connect to
your server.
Samples
Included samples will show you, step by step, how to
manually respond to client's actions. You can make an interface that
will talk to the clients (like an BBS system), they will enter commands and
different type of values in your program where you can evaluate them. This
is ideal for making restricted access area where users will be allowed only
to, for example, login and change their password.
interact with user's shell commands. In case you think user's actions
are becoming too aggressive and may damage your system, you can easily deny
any action made by them
start SFTP server in restricted environment. You can define custom
directories that will be shown to the clients as root folders. They will not
be able to access any parent folders than you specified. On each their
action, event will be fired where you can deny certain actions
open port forwarding where you can inspect the request, allow or deny
the action, or even change the parameters for it without the client even
knowing that.
Unlimited connections supported
Maximum number of connection is not omitted by wodSSHServer. It depends
on your OS and computer power. If you wish, you can easily limit number of the
connection by rejecting new connections when
wodSSHServer1.Users.Count exceeds certain value.
Encryption algorithms
Supported ciphers are AES, 3DES and Blowfish. 3DES is defined as
required by SSH2 protocol specification, so all clients should be able to
negotiate proper cipher between client and the server. Supported MAC
algorithms are MD5 and SHA1.
Generating keys needed for proper operation is easy using method
wodSSHServer1.Keys.Generate . However, using
externally generated keys is also supported with
Load (and Save) methods.
Additional notes
More information about SSH2 protocol can be found from IETF-secsh
Internet-Drafts (http://www.ietf.org/ID.html).
Usage of SSH1 version is deprecated and is not recommended to be used anymore,
thus is not implemented in wodSSHServer.
Note: in DEMO version you can not change the value of
BannerText property.