Tài liệu Intrusion Detection and Prevention ppt
Tài liệu Intrusion Detection and Prevention ppt
...
Intrusion Detection and Prevention
Because network traffic must cross the firewall to reach the end systems, ... appropriate. For many years,
firewall vendors such as Cisco Systems, Inc. and Check Point have been including
intrusion detection system (IDS) capabilities to their firewalls. These devices were ... through a port on a switch, and the interface that connects to...
Tài liệu Intrusion Detection Patterns 2 pptx
... understanding:
A large number of NT and Unix attacks involve going
after the password file and then decrypting it off line.
One of the bread and butter techniques of an attacker is to acquire and ... three commands: uname –a, id and w, which could reveal operating system
information, user and group IDs, and other information. The hex dump in this slide shows the same three
com...
Tài liệu Intrusion Detection Overview and Trends in Internet Attacks pptx
... low and slow
and covert channels. Covert channels involves hiding information in packet headers, or in what is called
null padding, and can be a handy way to synchronize with Trojans. Low and ... debate the effectiveness of Jackal and the software that followed its lead, but from an
intrusion detection point of view, the key point is that source port zero and SF set are a goo...
Tài liệu Intrusion Detection Patterns and Analysis ppt
... more, and also consider the architecture for intrusion detection.
12
IDIC - SANS GIAC LevelTwo
©2000, 2001
12
Firewalls and Intrusion Detection
• Firewalls perturb traffic – disrupt 3-way
handshake
• ... makes a wonderful policy for
intrusion detection and security in general. An allow everything
not specifically denied firewall policy makes site customized
intrusion de...
Tài liệu Intrusion Detection System Policy Manager ppt
... contain?
A. Organization ID and WatchDogInterval.
B. Organization ID and Organization name.
C. Organization ID and TimeOutAlarmLevel.
D. Organization name and WatchDogInterval.
Answer: ... firewall to allow Telnet traffic from the sensors
command and control interface to the router and UDP port 45000 traffic through the
firewall and the routers to the director.
Con...
Tài liệu Intrusion Detection The Big Picture – Part III ppt
... 192.168.1.1 and
(
(tcp and ((tcp[13] & 2 != 0) and (tcp[13] & 0x10 = 0))
and (not dst port 80))
or
(udp and not dst port 53 and not dst port 137)
or
(icmp and (icmp[0] != 8) and (icmp[0] != 0)
and ...
Intrusion Detection
• Host-Based Intrusion Detection
–Unix
– Windows NT, 95, 98
• Network-Based Intrusion Detection
–Shadow
– ISS RealSecure
–Cisco NetRange...
Tài liệu Intrusion Detection The Big Picture – Part VI ppt
... system.
1
1
Intrusion Detection - The Big Picture – SANS GIAC
©2000, 2001
Intrusion Detection
The Big Picture – Part VI
Stephen Northcutt
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20
Intrusion Detection ... for intrusion detection -
revisited “How to use Risk
Assessment tools!”
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25
Intrusion Detection - The Big Picture – SANS GIAC
©2000, 200...
Tài liệu Intrusion Detection The Big Picture – Part III docx
... 192.168.1.1 and
(
(tcp and ((tcp[13] & 2 != 0) and (tcp[13] & 0x10 = 0))
and (not dst port 80))
or
(udp and not dst port 53 and not dst port 137)
or
(icmp and (icmp[0] != 8) and (icmp[0] != 0)
and ... pool.
2
Intrusion Detection - The Big Picture - SANS GIAC
© 2000
2
Network-Based Intrusion
Detection
• Host Based Intrusion Detection
–Unix
– Windows NT, 9...
Tài liệu Grammar, Punctuation, and Capitalization pptx
... dash.
emphasis,
brevity and, 33
colon and, 43, 46, 47
comma and, 43, 51
dash and, 43, 57, 58
dash vs. semicolon, 58
italics for, 41, 63
lists, 42
on action, 28, 30
parallelism and, 41
parentheses and, 57
positions ... examples are highly technical and therefore harder to understand, but technical editors and other
technical publishing professionals must understand grammar, punctuat...
Tài liệu Intrusion Detection The Big Picture – Part IV pdf
... the most important intrusion
detection sensors on the Internet.
17
Intrusion Detection - The Big Picture – SANS GIAC
©2000
17
Intrusion Detection Roadmap
What are the pieces and how they play ...
©2000
18
P
Indications and Warning
P
Early Detection
P
Detection
P
Late Detection
P
Negation
P
Early Negation
P
Late Negation
P
Host Negation
P
Host Detection
P
Host...
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