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<p class="MsoNormal"><span lang="EN-US">Hi all, I was trying to setup an alert when a server has established SSH connections with a “foreign” remote IP (i.e. not beginning with 192.168).<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">It seem to be working so I’m posting, it maybe it’s useful for someone.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Any comment or correction will be appreciated.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">P.S.: change host name and the regex accordingly with your ip addressing
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">HOST=host01<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"> PORT "LOCAL=%([.:]22)$" "REMOTE=%^(?!(192\.168)).+" state=ESTABLISHED MAX=0 COLOR=red TRACK=SSH_fconn "TEXT=SSH foreign connections"<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">P.P.S.: very useful site for composing regexp
<a href="https://regex101.com/">https://regex101.com/</a> </span><span lang="EN-US" style="font-family:Wingdings">J</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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