SSH2 library for ios

Is there any quality SSH2 library for ios?

For java there's a library called jsch (http://www.jcraft.com/jsch/) that does a great job at wrapping ssh2. The one bit of functionality that I'm most interested in is the "Reverse Port Forward" method:

session.setPortForwardingR(remote_port, host, local_port);

I found one objective-c lib from http://www.chilkatsoft.com/ssh-sftp-objc.asp, but it's not free and doesn't seem to be at a high 开发者_如何学编程level of quality. Should I just attempt to port the C version of openssh?

Also, if porting openssh is the best option, is there any open source project that is currently doing this?

https://github.com/Lejdborg/NMSSH - https://github.com/x2on/libssh2-for-iOS

I might consider checking out libssh. At first glance it looks like an appealing option for C. It can probably be compiled for iPhone with a bit of effort.