For example, if you want to allow certain users to access guard points only if the users log in via SSH and Telnet, add | authenticator | in front of the login processes as shown in Listing 2.

例如，如果您希望仅允许通过ssh和telnet登录的特定用户访问保护点，那么需要在登录进程的前面添加| authenticator |，如清单2所示。

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Anyone who wanted to leave the courtroom had to ask a security guard for an access card and then display it before being allowed to re-enter.

CNN: Airplane bomb suspect pleads not guilty

And today we have 20, 000 National Guard and Reserve members in California who have access to health care because I teamed up with Senator Lindsey Graham of South Carolina to get that done.

CNN: Transcript of Thursday's Democratic presidential debate

Mobile phones, it seems, are the advance guard for mobile-broadband networks that will extend internet access to the whole of mankind.

ECONOMIST: Finishing the job