{{tag>wtmp strings hostname ip egrep grep utmpdump aix howto}}
====== determine connection source hosts ======
  * http://www.linuxquestions.org/questions/linux-security-4/var-log-wtmp-72976/
  * https://linux.die.net/man/5/wtmp

<sxh bash; gutter: false>
strings /var/log/wtmp | egrep -vi "^pts\/|^ts\/" | grep -P "[0-9_\-]+\.[0-9_\-]+\.[0-9_\-]+\.[0-9_\-]+" | sort | uniq
utmpdump /var/log/wtmp | less
/usr/lib/acct/fwtmp < /var/adm/wtmp > /tmp/abc.out # AIX
</sxh>

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~~DISCUSSION~~