Date: Tue, 1 Jul 1997 22:13:58 +0300 (EEST) From: Sergey Pukach <pss@gloom.te.net.ua> To: freebsd-questions@freebsd.org Cc: kvn@gloom.te.net.ua, vlad@nobulus.tn.odessa.ua Subject: Security hole ? Message-ID: <199707011913.WAA00442@gloom.te.net.ua>
next in thread | raw e-mail | index | archive | help
Hi. I have two ISP, one of which running FreeBSD and assign static IP to all users. For connection I'm using ppp by Toshiharu OHNO. Playing wiht /etc/ppp/ppp.conf I'm found amazing (for me) feature. This is string from ppp.conf: add ifaddr a.b.c.d 0 So, remote server can use any IP and my IP should be a.b.c.d If instesd of a.b.c.d I substitute real IP of one of my ISP server I can declare myself as another machine. During such connection I have received a lot of mail which is not intended to be mine. I think skilful hacker can use this in another way. So, how ISP can avoid such unproper connections? pss // Sergey Pukach // pss@te.net.ua
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199707011913.WAA00442>