Date: Sat, 26 Feb 2000 01:56:17 -0800 (PST) From: Nguyen Manh Tho <manhtho@yahoo.com> To: FreeBSD Questions <freebsd-questions@FreeBSD.ORG> Cc: nmtho@dit.hcmut.edu.vn Subject: Could I use the dhcp.bind to query the machine accessing to my Server ? Message-ID: <20000226095617.14167.qmail@web1604.mail.yahoo.com>
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Dear FreeBSD members,
I need your helps in my problems and I am very
appreciated for all your reply. I am aslo sorry if it
make you trouble.
Our University now have the Internet service system
for student accessing through some service such as
fpt,
http, telnet,... We need to inquire who had accessed
our system and now I have to write the program doing
this work. I am now looking for the solving way to do
this task.
I have read the file dhcpdb.bind but I didn't
understand much. Is that file store informations of
the one who accessed to the host?
An example of one line in that file is:
1:0x00004c438911:192.168.1.0:1:0x00004c438911:"Thu Dec
3 19:15:11 1998":0068
I have some question here:
Is "1:0x00004c438911" the MAC address of the accessing
computer?
Is "Thu Dec 3 19:15:11 1998" is the date and time of
accessing?
And is "0068" the number of that computer which is
stored is the file dhcpdb.pool?
But which computer has the IP address "192.168.1.0"?
Because I've found that all the lines in dhcpdb.bind
have the same one ("192.168.1.0"). What's is the real
IP address of the machine access ?
Another question is what is the usage of the file
dhcpdb.bind? Is it the database that the DHCP Server
will use for leasesing IP automatically.
Now our Univesity is very interested in the security
problem of our Internet system, could we use that
file to inquire who had accessed our system?
Would you please help me or tell me where I could find
the answer? Now I couldn't have any detail document
about that.
If anyone have other solving satisfy this task, please
let me know.
I'm very sorry if my questions are so silly because
I'm very new in both UNIX and Free BSD. I'm using Free
BSD version 3.3.
Nguyen Manh Tho.
++++++++++++++++++++++++++++++++++++
Engineer, Assistant Lecturer, Database Group,
Department of Information Technology,
Hochiminh City University of Technology,
Block A3, 268 Ly Thuong Kiet Street, Ward 12,
District 10, Hochiminh City, Vietnam.
Email: nmtho@dit.hcmut.edu.vn
URL: http://www.hcmut.edu.vn
++++++++++++++++++++++++++++++++++++
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