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    <p>Je něco proti něčemu dropovat obecně celý provoz z AS patřícího k
      oné IP adrese? Plus nějaké porty povoluju.</p>
    <p>To podle toho, jak se to u mne vyskytuje v logu a podle četnosti.</p>
    <p><br>
    </p>
    <p>Vencour</p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 30. 10. 19 9:52, zd nex wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAC_zDp95jcd90nG=z2Fzb6orhRcnUEx+t_-9xU_H3fDQ++qEog@mail.gmail.com">
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          <div>Tak jsem to trochu prozkoumal více, vypadá to že je to
            nějaký scanner. Nyní je neaktivní (na žádném serveru to
            není)  a vypadá to, že přistupuje z  více obdobných adres
            např.  - každá z nich je z jiné části Amazonu (routing,
            compute) apod.. Vše je ale AWS Soul.<br>
          </div>
          <div>
            <span id="gmail-:34.co" class="gmail-tL8wMe gmail-EMoHub"
              style="text-align:left" dir="ltr">54.180.139.105<br>
              54.180.138.177<br>
              54.180.163.44<br>
              54.180.139.105</span></div>
          <div><span id="gmail-:34.co" class="gmail-tL8wMe gmail-EMoHub"
              style="text-align:left" dir="ltr"><br>
            </span></div>
          <div><span id="gmail-:34.co" class="gmail-tL8wMe gmail-EMoHub"
              style="text-align:left" dir="ltr">
            </span>
            <div id="gmail-:4k.ma" class="gmail-Mu gmail-SP"><span
                id="gmail-:4k.co" class="gmail-tL8wMe gmail-EMoHub"
                style="text-align:left" dir="ltr">13.124.8.54</span></div>
            <div id="gmail-:4l.ma" class="gmail-Mu gmail-SP"><span
                id="gmail-:4l.co" class="gmail-tL8wMe gmail-EMoHub"
                style="text-align:left" dir="ltr">13.125.235.121</span></div>
            <div class="gmail-Mu gmail-SP"><span id="gmail-:4l.co"
                class="gmail-tL8wMe gmail-EMoHub"
                style="text-align:left" dir="ltr">
                <span id="gmail-:4m.co" class="gmail-tL8wMe
                  gmail-EMoHub" style="text-align:left" dir="ltr">13.125.197.34
                  - tato dokonce je živá a jede tam nějaký mail server</span>
              </span></div>
          </div>
          <div><span id="gmail-:34.co" class="gmail-tL8wMe gmail-EMoHub"
              style="text-align:left" dir="ltr"><br>
            </span></div>
          <div><span id="gmail-:34.co" class="gmail-tL8wMe gmail-EMoHub"
              style="text-align:left" dir="ltr"><a
                href="https://www.abuseipdb.com/check/54.180.139.105"
                moz-do-not-send="true">https://www.abuseipdb.com/check/54.180.139.105</a></span></div>
          <div><span id="gmail-:34.co" class="gmail-tL8wMe gmail-EMoHub"
              style="text-align:left" dir="ltr">
              <span id="gmail-:4m.co" class="gmail-tL8wMe gmail-EMoHub"
                style="text-align:left" dir="ltr"><a rel="nofollow
                  noreferrer noopener" target="_blank"
href="https://www.google.com/url?q=https://www.abuseipdb.com/check/13.125.197.34&sa=D&source=hangouts&ust=1572511680416000&usg=AFQjCNEOOO_7Kqh0hzDL5cQBvLnegK-rWA"
                  class="gmail-Xx" tabindex="-1" dir="ltr"
                  moz-do-not-send="true">https://www.abuseipdb.com/check/13.125.197.34</a></span><br>
            </span></div>
          <div><span id="gmail-:34.co" class="gmail-tL8wMe gmail-EMoHub"
              style="text-align:left" dir="ltr"><br>
            </span></div>
          <div><span id="gmail-:34.co" class="gmail-tL8wMe gmail-EMoHub"
              style="text-align:left" dir="ltr">podle komentářů to
              opravdu vypadá na nějaký scanner / SYN flood?<br>
            </span></div>
        </div>
        <br>
        <div class="gmail_quote">
          <div dir="ltr" class="gmail_attr">st 30. 10. 2019 v 9:26
            odesílatel Pavel Snajdr <<a
              href="mailto:snajpa@snajpa.net" moz-do-not-send="true">snajpa@snajpa.net</a>>
            napsal:<br>
          </div>
          <blockquote class="gmail_quote" style="margin:0px 0px 0px
            0.8ex;border-left:1px solid
            rgb(204,204,204);padding-left:1ex">
            <div dir="auto">
              <div dir="ltr">... tak to prozkoumej, kdyz to rikas ;)</div>
              <div dir="ltr"><br>
              </div>
              <div dir="ltr">/snajpa</div>
              <div dir="ltr"><br>
                On 30 Oct 2019, at 07:04, zd nex <<a
                  href="mailto:zdnexnet@gmail.com" target="_blank"
                  moz-do-not-send="true">zdnexnet@gmail.com</a>>
                wrote:<br>
                <br>
              </div>
              <blockquote type="cite">
                <div dir="ltr">
                  <div dir="ltr">
                    <div dir="ltr">
                      <div>Ahojte,</div>
                      <div><br>
                      </div>
                      <div>popravdě jsem si toho také všiml, je to >
                        vše na 443 nebo 80 portu. Většina adress je
                        Amazon south asia (seoul) + nějaký provider
                        Leaseweb NL, je to na všech serverech.  Trochu
                        by to asi stálo za prozkoumání. Není toho moc
                        cca 50 -200. V minulosti to bylo víc, pak to
                        ustálo a asi se to oživuje?<br>
                      </div>
                    </div>
                    <div><br>
                    </div>
                    <div>Zdenek<br>
                    </div>
                    <div class="gmail_quote">
                      <div dir="ltr" class="gmail_attr">út 29. 10 2019
                        v 19:48 odesílatel Pavel Snajdr <<a
                          href="mailto:snajpa@snajpa.net"
                          target="_blank" moz-do-not-send="true">snajpa@snajpa.net</a>>
                        napsal:<br>
                      </div>
                      <blockquote class="gmail_quote" style="margin:0px
                        0px 0px 0.8ex;border-left:1px solid
                        rgb(204,204,204);padding-left:1ex">Ahoj,<br>
                        <br>
                        co myslis tim resit na infrastrukture? My Ti do
                        trafficu sahat nebudeme, <br>
                        pokud to nebude prusvih velikosti, jako byl ten
                        prusvih s memcached udp <br>
                        amplification utokama - nic takovyho
                        nepozorujeme; kazdopadne je mozny, <br>
                        ze se zase neco rozmaha (ale podle toho, ze se
                        zatim nezvedla vlna abuse <br>
                        notices, to nevypada).<br>
                        <br>
                        Kazdopadne se ujisti, ze mas vsechno aktualni -
                        z poslednich dni hlavne <br>
                        napr. PHP-FPM, ktere ma remote code execution
                        diru v urcitych setupech <br>
                        uz od PHP5... a na PHP7 je venku proof of
                        concept exploit.<br>
                        <br>
                        /snajpa<br>
                        <br>
                        On 2019-10-29 15:28, Petr Parolek wrote:<br>
                        > Ahoj,<br>
                        > <br>
                        > už několik dnů na mé VPS pozoruju mnoho
                        spojení se stavem SYN_RECV<br>
                        > <br>
                        > viz: netstat -anp |grep 'SYN_RECV' | awk
                        '{print $5}' | cut -d: -f1 |<br>
                        > sort | uniq -c | sort -n<br>
                        >      23 xxx.xxx.xxx.xxx<br>
                        >      23 xxx.xxx.xxx.xxx<br>
                        > ...<br>
                        > <br>
                        > okolo 20 IP adres.<br>
                        > <br>
                        > Mám se tím znepokojovat nebo je vše ok a
                        vše by se mělo řešit na <br>
                        > infrastruktuře?<br>
                        > <br>
                        > Díky moc za postřehy a rady<br>
                        > <br>
                        > <br>
                        > Petr<br>
                        >
                        _______________________________________________<br>
                        > Community-list mailing list<br>
                        > <a
                          href="mailto:Community-list@lists.vpsfree.cz"
                          target="_blank" moz-do-not-send="true">Community-list@lists.vpsfree.cz</a><br>
                        > <a
                          href="http://lists.vpsfree.cz/listinfo/community-list"
                          rel="noreferrer" target="_blank"
                          moz-do-not-send="true">http://lists.vpsfree.cz/listinfo/community-list</a><br>
                        _______________________________________________<br>
                        Community-list mailing list<br>
                        <a href="mailto:Community-list@lists.vpsfree.cz"
                          target="_blank" moz-do-not-send="true">Community-list@lists.vpsfree.cz</a><br>
                        <a
                          href="http://lists.vpsfree.cz/listinfo/community-list"
                          rel="noreferrer" target="_blank"
                          moz-do-not-send="true">http://lists.vpsfree.cz/listinfo/community-list</a><br>
                      </blockquote>
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                    <br>
                  </div>
                </div>
              </blockquote>
              <blockquote type="cite">
                <div dir="ltr"><span>_______________________________________________</span><br>
                  <span>Community-list mailing list</span><br>
                  <span><a href="mailto:Community-list@lists.vpsfree.cz"
                      target="_blank" moz-do-not-send="true">Community-list@lists.vpsfree.cz</a></span><br>
                  <span><a
                      href="http://lists.vpsfree.cz/listinfo/community-list"
                      target="_blank" moz-do-not-send="true">http://lists.vpsfree.cz/listinfo/community-list</a></span><br>
                </div>
              </blockquote>
            </div>
            _______________________________________________<br>
            Community-list mailing list<br>
            <a href="mailto:Community-list@lists.vpsfree.cz"
              target="_blank" moz-do-not-send="true">Community-list@lists.vpsfree.cz</a><br>
            <a href="http://lists.vpsfree.cz/listinfo/community-list"
              rel="noreferrer" target="_blank" moz-do-not-send="true">http://lists.vpsfree.cz/listinfo/community-list</a><br>
          </blockquote>
        </div>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
Community-list mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Community-list@lists.vpsfree.cz">Community-list@lists.vpsfree.cz</a>
<a class="moz-txt-link-freetext" href="http://lists.vpsfree.cz/listinfo/community-list">http://lists.vpsfree.cz/listinfo/community-list</a>
</pre>
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