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802.11g ADSL2+ VPN Firewall Router
Chapter 4: Configuration
Table 2: Hacker attack types recognized by the IDS
Intrusion Name Detect Parameter Blacklist
Type of Block
Duration
Drop Packet Show Log
Ascend Kill
Ascend Kill data Src IP DoS Yes Yes
WinNuke
TCP
Port 135, 137~139,
Flag: URG
Src IP DoS Yes Yes
Smurf
ICMP type 8
Des IP is broadcast
Dst IP
Victim
Protection
Yes Yes
Land attack
SrcIP = DstIP Yes Yes
Echo/CharGen Scan
UDP Echo Port and
CharGen Port
Yes Yes
Echo Scan
UDP Dst Port =
Echo(7)
Src IP Scan Yes Yes
CharGen Scan
UDP Dst Port =
CharGen(19)
Src IP Scan Yes Yes
X’mas Tree Scan
TCP Flag: X’mas Src IP Scan Yes Yes
IMAP
SYN/FIN Scan
TCP Flag: SYN/FIN
DstPort: IMAP(143)
SrcPort: 0 or 65535
Src IP Scan Yes Yes
SYN/FIN/RST/ACK
Scan
TCP,
No Existing session
A
nd Scan Hosts
more than five.
Src IP Scan Yes Yes
Net Bus Scan
TCP
No Existing session
DstPort = Net Bus
12345,12346, 3456
SrcIP Scan Yes Yes
Back Orifice Scan
UDP, DstPort =
Orifice Port (31337)
SrcIP Scan Yes Yes
SYN Flood
Max TCP Open
Handshaking Count
(Default 100 c/sec)
Yes
ICMP Flood
Max ICMP Count
(Default 100 c/sec)
Yes
ICMP Echo
Max PING Count
(Default 15 c/sec)
Yes
Src IP: Source IP Src Port: Source Port
Dst Port: Destination Port Dst IP: Destination IP
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