Noter til bogen Mastering FreeBSD and OpenBSD Security del 2
Programsituationer Lars Sommer < [email protected] > 11. september 2007 Noter til bogen Mastering FreeBSD and OpenBSD Security del 2 Indhold Kapitel 1 Webserver 1.1 Angreb En webserver står ofte åben for hele verden, så folk kan komme og se på hjem- mesiderne. Dette medfører at webservere ofte er…
Wireless network (sikkerhed) for begyndere
Noter fra foredrag omkring 2005. Wireless network (sikkerhed) for begyndere hlkv6 har security6.net Tjek standarderne 802.11 b, g men især i (security stuff) "i" er kun softwareudvidelser. Frekvenser og kanaler hænger sammen. Søg efter liste. (se om der er taget højde for interferens (som med…
File backed encrypted file system on FreeBSD 6.2
Lars Sommer, [email protected], 2008-01-10 Written as a personal note. This is useful when you need an encrypted file system, without modifying the partition table. Directly based on: http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/disks-virtual.html http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/disks-encrypting.html --- Names and paths used I'm making my stuff in a separate folder in my homedir,…
BSD-sikkerhedsnoter v.0.1
Lars Sommer < [email protected] > 11. april 2006 0.1 Forord og introduktion 0.1.1 Forord BSD er godt. BSD kan gøres sikkert. Jeg interesserer mig for operativsyste- mer og sikkerhed. Her er en lille kombination. 0.1.2 Introduktion Dette er ikke en bog! Dette er hverken en veldokumenteret vejledning…
Remote reverse ssh shell på OpenWRT og lignende
Remote reverse ssh shell på OpenWRT og lignende Lars Sommer, [email protected] 2007-07-12, v.1.0, beerware Disclaimer: Alt i denne artikel er dit eget ansvar. Alt hvad du bruger denne viden til, er dit eget ansvar. Indholdet af denne artikel kan misbruges til ulovlig overvågning af andres…
Secure erase data on hard drives in FreeBSD
2009-04-11, Lars Sommer, [email protected] Secure erase data on hard drives in FreeBSD 2009-04-11, Lars Sommer, [email protected] Short summary: Install security/bcwipe, run bcwipe -vdbm /dev/diskdevice I got six used hard drives through my company, and promised to securely erase data on them, before using them in…
Chroot your UltimateIRCd on OpenBSD
Probably written near 2005. Chroot your UltimateIRCd on OpenBSD COPYRIGHT Lars Sommer, [email protected] LICENSE: This document is free. You may do with it what you want, as long as you keep this copyright and license notice unmodified. If this document helps you, and you like…
Rootkit-detection in FreeBSD
Lars Sommer, [email protected], 2007-10-18DISCLAIMER: This is a personal note made for personal usage. It might not be easy usable nor explaining. Install these ports: security/chkrootkit security/rkhunter rkhunter install options: make options: WITH_LSOF=true WITH_NMAP=true --- chkrootkit usage: Run sometimes with: sudo chkrootkit -q Or add to…
FreeBSD jails note
Lars Sommer, [email protected], 2009-05-20DISCLAIMER: This is a personal note made for personal usage. It might not be easy usable nor explaining. Install these ports: sysutils/jailutils sysutils/ezjail If "make buildworld" just has been done, then ezjail-admin update -i to install the recently build world is fine.…
Denyhosts on FreeBSD 8
Lars Sommer, [email protected], 2011-06-20 Install the port security/denyhosts Add to /etc/rc.conf denyhosts_enable="YES" add syslogd_flags="-c" in /etc/hosts.allow add: sshd : /etc/hosts.deniedssh : deny sshd : ALL : allow Or, if anything should be denied from these hosts who fails ssh login; insert ALL instead of sshd.…