Master<\/p>\n
#!\/bin\/sh
\nPATH=\/usr\/local\/sbin:\/usr\/local\/bin:\/sbin:\/bin:\/usr\/sbin:\/usr\/bin
\n# stop dei servizi
\n\/etc\/init.d\/squid stop
\n\/etc\/init.d\/dansguardian stop
\n\/etc\/init.d\/squid3\u00a0 stop<\/p>\n
OTHER_MAC=00:04:75:93:3C:5B
\nVIP=192.168.2.241
\nexec 2> \/dev\/null<\/p>\n
ip addr del $VIP\/24 dev “$1”
\nsend_arp \\
\n$VIP $OTHER_MAC \\
\n$VIP $OTHER_MAC \\
\n“$1” $OTHER_MAC FF:FF:FF:FF:FF:FF reply
\nsleep 1
\nsend_arp \\
\n$VIP $OTHER_MAC \\
\n$VIP 00:00:00:00:00:00 \\
\n“$1” $OTHER_MAC FF:FF:FF:FF:FF:FF request<\/p>\n
OTHER_MAC corrispondea al mac address della eth1 della macchina slave
\ncon questo “giro” di send_arp in sostanza si fa si che la macchina che si elegge master forgi delle “gratuitous arp request e reply” con il mac address dell’altra macchina.<\/p>\n
slave<\/p>\n
#!\/bin\/sh
\nPATH=\/usr\/local\/sbin:\/usr\/local\/bin:\/sbin:\/bin:\/usr\/sbin:\/usr\/bin<\/p>\n
OTHER_MAC=00:15:17:4B:9B:B2
\nVIP=192.168.2.241
\nexec 2> \/dev\/null<\/p>\n
ip addr del $VIP\/24 dev “$1”
\nsend_arp \\
\n$VIP $OTHER_MAC \\
\n$VIP $OTHER_MAC \\
\n“$1” $OTHER_MAC FF:FF:FF:FF:FF:FF reply
\nsleep 1
\nsend_arp \\
\n$VIP $OTHER_MAC \\
\n$VIP 00:00:00:00:00:00 \\
\n“$1” $OTHER_MAC FF:FF:FF:FF:FF:FF request<\/p>\n
# stop dei servizi
\n\/etc\/init.d\/squid stop
\n\/etc\/init.d\/dansguardian stop
\n\/etc\/init.d\/squid-ntlm stop<\/p>\n
OTHER_MAC corrispondea al mac address della eth1 della macchina Master
\ncon questo “giro” di send_arp in sostanza si fa si che la macchina che si elegge master forgi delle “gratuitous arp request e reply” con il mac address dell’altra macchina.<\/p>\n","protected":false},"excerpt":{"rendered":"
Master #!\/bin\/sh PATH=\/usr\/local\/sbin:\/usr\/local\/bin:\/sbin:\/bin:\/usr\/sbin:\/usr\/bin # stop dei servizi \/etc\/init.d\/squid stop \/etc\/init.d\/dansguardian stop \/etc\/init.d\/squid3\u00a0 stop OTHER_MAC=00:04:75:93:3C:5B VIP=192.168.2.241 exec 2> \/dev\/null ip addr del $VIP\/24 dev “$1” send_arp \\ $VIP $OTHER_MAC \\ $VIP $OTHER_MAC \\ “$1” $OTHER_MAC FF:FF:FF:FF:FF:FF reply sleep 1 send_arp \\ $VIP $OTHER_MAC \\ $VIP 00:00:00:00:00:00 \\ “$1” $OTHER_MAC FF:FF:FF:FF:FF:FF request OTHER_MAC corrispondea al mac address […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,8,7,6],"tags":[],"class_list":["post-257","post","type-post","status-publish","format-standard","hentry","category-cluster","category-linux","category-sistemi-operativi","category-work"],"_links":{"self":[{"href":"http:\/\/clark.tipistrani.it\/index.php?rest_route=\/wp\/v2\/posts\/257","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/clark.tipistrani.it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/clark.tipistrani.it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/clark.tipistrani.it\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/clark.tipistrani.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=257"}],"version-history":[{"count":1,"href":"http:\/\/clark.tipistrani.it\/index.php?rest_route=\/wp\/v2\/posts\/257\/revisions"}],"predecessor-version":[{"id":258,"href":"http:\/\/clark.tipistrani.it\/index.php?rest_route=\/wp\/v2\/posts\/257\/revisions\/258"}],"wp:attachment":[{"href":"http:\/\/clark.tipistrani.it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=257"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/clark.tipistrani.it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=257"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/clark.tipistrani.it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}