Is MacPort's SSH more secure than Apple's SSH?

[Jose Hales-Garcia]

I've had an unusual episode of DoS attacks on SSH 4.5 (the one that  
comes with Tiger and patched with Security Update 2007-003[1]).  The  
SSHD processes are left hanging and the system eventually runs out of  
TTYs.

I installed MacPorts' SSH 4.7.  Besides the fact that it's running  
off of a slightly more obscure port and I've made changes in the  
sshd_config file to help make SSHD more robust, is there something  
inherently more robust about MacPorts' version of SSH?  It is version  
4.7 as opposed to version 4.5.  Also, I'm assuming it's not dependent  
on the whatever makes Apple's implementation susceptible to it's  
particular problems.  Is that a correct assumption?

Thanks,
Jose

[1] http://docs.info.apple.com/article.html?artnum=305214