Cybersecurity

Hi folks. I have a quick question on using "telnetd" vs. "telnetd -a".

OS: AIX 5.x (5.1 through 5.3 ML3)

Some engineers at work want to stop using "telnetd -a" and use "telnetd".
(and of course, if I could get a cogent answer from them, I wouldn't be posting this question...)

The man page for telnetd suggests that "telnetd -a" offers improved performance as follows:

-a Causes the PTY and socket to be linked directly in the kernel so that the data handling remains in the kernel to improve the performance.

I don't see a security issue here, so I'm guessing that there might be a memory issue related to this.

Barring a call to IBM (which I'm about to make), does anyone have a quick answer as to why *not* to use -a, or which option is preferred?

Thanks!

-Dave