{"id":206,"date":"2011-04-21T12:50:07","date_gmt":"2011-04-21T17:50:07","guid":{"rendered":"http:\/\/www.popmartian.com\/tipsntricks\/?p=206"},"modified":"2011-04-21T12:50:07","modified_gmt":"2011-04-21T17:50:07","slug":"linux-howto-enable-miltucast-ping-icmp-replies-echo","status":"publish","type":"post","link":"https:\/\/www.popmartian.com\/tipsntricks\/2011\/04\/21\/linux-howto-enable-miltucast-ping-icmp-replies-echo\/","title":{"rendered":"Linux HOWTO Enable Miltucast Ping (ICMP) Replies (Echo)"},"content":{"rendered":"

The 2.6 Linux kernel does not respond to multicast ICMP Echo requests by default. This is a setting in \/proc\/sys\/net\/ipv4\/icmp_echo_ignore_broadcasts<\/p>\n

Test it:<\/p>\n

# cat \/proc\/sys\/net\/ipv4\/icmp_echo_ignore_broadcasts<\/code>
\n1
\n#<\/p>\n

Set it to 0 for ping replies:<\/p>\n

# echo \"0\" > \/proc\/sys\/net\/ipv4\/icmp_echo_ignore_broadcasts<\/code>
\n# cat \/proc\/sys\/net\/ipv4\/icmp_echo_ignore_broadcasts<\/code>
\n0
\n#<\/p>\n","protected":false},"excerpt":{"rendered":"

The 2.6 Linux kernel does not respond to multicast ICMP Echo requests by default. This is a setting in \/proc\/sys\/net\/ipv4\/icmp_echo_ignore_broadcasts Test it: # cat \/proc\/sys\/net\/ipv4\/icmp_echo_ignore_broadcasts 1 # Set it to 0 for ping replies: # echo “0” > \/proc\/sys\/net\/ipv4\/icmp_echo_ignore_broadcasts # … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,27,13],"tags":[],"class_list":["post-206","post","type-post","status-publish","format-standard","hentry","category-how-to-do-stuff","category-linux","category-networking"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.popmartian.com\/tipsntricks\/wp-json\/wp\/v2\/posts\/206","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.popmartian.com\/tipsntricks\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.popmartian.com\/tipsntricks\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.popmartian.com\/tipsntricks\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.popmartian.com\/tipsntricks\/wp-json\/wp\/v2\/comments?post=206"}],"version-history":[{"count":2,"href":"https:\/\/www.popmartian.com\/tipsntricks\/wp-json\/wp\/v2\/posts\/206\/revisions"}],"predecessor-version":[{"id":208,"href":"https:\/\/www.popmartian.com\/tipsntricks\/wp-json\/wp\/v2\/posts\/206\/revisions\/208"}],"wp:attachment":[{"href":"https:\/\/www.popmartian.com\/tipsntricks\/wp-json\/wp\/v2\/media?parent=206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.popmartian.com\/tipsntricks\/wp-json\/wp\/v2\/categories?post=206"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.popmartian.com\/tipsntricks\/wp-json\/wp\/v2\/tags?post=206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}