A Facebook page named "The Reis" published content on August 18 claiming that "Turkey has leased the Port of Khums on Libya's Mediterranean coast to establish a military base for 99 years."
However, after verifying the facts based on research conducted through online search engines, hibrid.info has found that such a claim has been denied by Libyan state officials.
Link to the post published on Facebook by the page "The Reis":

Fact checker from Turkey "dogurlukpayi.com" they say they originally appeared in an unspecified Twitter post from the "Sanayi Savunma" TR account (which later removed the account post), were distributed and were reported within a short time.

In a statement Libyan Government spokesman Mohammed Hammude denied claims about leasing the Al-Khums port to a foreign state, Anadolu Agency reported.
"The Lebanese government on Thursday denied reports that it had leased a port to a foreign country for military purposes.
"Rumors that the Lebanese state has given up on Al-Khums port or that the port will be used as a military base by a foreign country are baseless."
Analyze:
From the fact-checking and analysis, it results that the claim made by the Facebook page named "The Reis" about the leasing of the Al-Khums port in Lebanon by Turkey is unfounded.
Such a claim has been denied by official institutions at the central and local levels of the Libyan state.
Based on its work methodology, hibrid.info considers this claim to be "misinformation".
Rating:
A “Disinformation” rating is given to media reporting that contains a “mix” of inaccurate sources or even half-truthful content. This rating will also address reports that have incorrect attributions or headlines that do not reflect the text in terms of information accuracy.