In mijn edimax router zit ook een firewall maar nu vroeg ik mij af of de settings wel ok staan.
Dit is standaard:
Intrusion Detection Feature
SPI and Anti-DoS firewall protection : aan
RIP defect : aan
Discard Ping to WAN Port : aan
Stateful Packet Inspection
Packet Fragmentation aan
TCP Connection aan
UDP Session aan
FTP Service aan
H.323 Service aan
TFTP Service aan
Connection Policy
Fragmentation half-open wait: 10 secs
TCP SYN wait: 30 sec.
TCP FIN wait: 5 sec.
TCP connection idle timeout: 3600 sec.
UDP session idle timeout: 30 sec.
H.323 data channel idle timeout: 180 sec.
DoS Detect Criteria
Total incomplete TCP/UDP sessions HIGH: 300 session
Total incomplete TCP/UDP sessions LOW: 200session
Incomplete TCP/UDP sessions (per min) HIGH: 250 session
Incomplete TCP/UDP sessions (per min) LOW: 200 session
Maximum incomplete TCP/UDP sessions number from same host: 10 session
Incomplete TCP/UDP sessions detect sensitive time period: 300 msec.
Maximum half-open fragmentation packet number from same host: 30
Half-open fragmentation detect sensitive time period: 10000 msec.
Flooding cracker block time: 300 sec.
MAAR check security log:
08/18/2003 13:49:05 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1320 (from WAN)
08/18/2003 13:48:55 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1313 (from WAN)
08/18/2003 13:48:53 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1320 (from WAN)
08/18/2003 13:48:47 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1320 (from WAN)
08/18/2003 13:48:44 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1320 (from WAN)
08/18/2003 13:48:43 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1313 (from WAN)
08/18/2003 13:48:41 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1320 (from WAN)
08/18/2003 13:48:37 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1313 (from WAN)
08/18/2003 13:48:34 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1313 (from WAN)
08/18/2003 13:48:31 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1313 (from WAN)
08/18/2003 12:42:55 **smurf** 62.45.125.0, 3826->> 62.45.180.144, 135 (from WAN)
08/18/2003 12:21:04 **smurf** 4.0.1.0, 0->> 224.0.0.22, 0 (from LAN)
08/18/2003 11:14:05 DHCP Client: Receive Ack from 62.45.45.74,Lease time=1800
08/18/2003 11:14:05 DHCP Client: Send Request,Request IP=62.45.180.144
08/18/2003 11:03:57 NTP Date/Time updated
08/18/2003 11:03:27 Begin to query NTP
08/18/2003 09:57:50 DHCP Client: Receive Ack from 62.45.45.74,Lease time=1800
08/18/2003 09:57:50 DHCP Client: Send Request,Request IP=62.45.180.144
08/18/2003 09:55:54 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3306 (from WAN)
08/18/2003 09:55:42 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3306 (from WAN)
08/18/2003 09:55:36 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3306 (from WAN)
08/18/2003 09:55:33 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3306 (from WAN)
08/18/2003 09:53:18 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3186 (from WAN)
08/18/2003 09:53:12 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3186 (from WAN)
08/18/2003 09:53:09 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3186 (from WAN)
08/18/2003 09:42:35 DHCP Client: Receive Ack from 62.45.45.74,Lease time=1800
08/18/2003 09:42:35 DHCP Client: Send Request,Request IP=62.45.180.144
Dat lijkt mij een beetje veel gesmurf.
Staan mijn settings zo fout of heb ik last van smurfen?
edit:
smurf =
Smurf is a simple attack based on IP spoofing and broadcasts. A single packet (such as an ICMP Echo Request) is sent as a directed broadcast to a subnet on the Internet. All the machines on that subnet respond to this broadcast. By spoofing the source IP address of the packet, all the responses will get sent to the spoofed IP address. Thus, a hacker can often flood a victim with hundreds of responses for every request the hacker sends out.
http://www.iss.net/securi...oits/IP/smurf/default.htm
Dit is standaard:
Intrusion Detection Feature
SPI and Anti-DoS firewall protection : aan
RIP defect : aan
Discard Ping to WAN Port : aan
Stateful Packet Inspection
Packet Fragmentation aan
TCP Connection aan
UDP Session aan
FTP Service aan
H.323 Service aan
TFTP Service aan
Connection Policy
Fragmentation half-open wait: 10 secs
TCP SYN wait: 30 sec.
TCP FIN wait: 5 sec.
TCP connection idle timeout: 3600 sec.
UDP session idle timeout: 30 sec.
H.323 data channel idle timeout: 180 sec.
DoS Detect Criteria
Total incomplete TCP/UDP sessions HIGH: 300 session
Total incomplete TCP/UDP sessions LOW: 200session
Incomplete TCP/UDP sessions (per min) HIGH: 250 session
Incomplete TCP/UDP sessions (per min) LOW: 200 session
Maximum incomplete TCP/UDP sessions number from same host: 10 session
Incomplete TCP/UDP sessions detect sensitive time period: 300 msec.
Maximum half-open fragmentation packet number from same host: 30
Half-open fragmentation detect sensitive time period: 10000 msec.
Flooding cracker block time: 300 sec.
MAAR check security log:
08/18/2003 13:49:05 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1320 (from WAN)
08/18/2003 13:48:55 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1313 (from WAN)
08/18/2003 13:48:53 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1320 (from WAN)
08/18/2003 13:48:47 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1320 (from WAN)
08/18/2003 13:48:44 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1320 (from WAN)
08/18/2003 13:48:43 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1313 (from WAN)
08/18/2003 13:48:41 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1320 (from WAN)
08/18/2003 13:48:37 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1313 (from WAN)
08/18/2003 13:48:34 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1313 (from WAN)
08/18/2003 13:48:31 **smurf** 66.218.66.255, 80->> 192.168.2.101, 1313 (from WAN)
08/18/2003 12:42:55 **smurf** 62.45.125.0, 3826->> 62.45.180.144, 135 (from WAN)
08/18/2003 12:21:04 **smurf** 4.0.1.0, 0->> 224.0.0.22, 0 (from LAN)
08/18/2003 11:14:05 DHCP Client: Receive Ack from 62.45.45.74,Lease time=1800
08/18/2003 11:14:05 DHCP Client: Send Request,Request IP=62.45.180.144
08/18/2003 11:03:57 NTP Date/Time updated
08/18/2003 11:03:27 Begin to query NTP
08/18/2003 09:57:50 DHCP Client: Receive Ack from 62.45.45.74,Lease time=1800
08/18/2003 09:57:50 DHCP Client: Send Request,Request IP=62.45.180.144
08/18/2003 09:55:54 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3306 (from WAN)
08/18/2003 09:55:42 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3306 (from WAN)
08/18/2003 09:55:36 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3306 (from WAN)
08/18/2003 09:55:33 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3306 (from WAN)
08/18/2003 09:53:18 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3186 (from WAN)
08/18/2003 09:53:12 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3186 (from WAN)
08/18/2003 09:53:09 **smurf** 66.218.66.255, 80->> 192.168.2.101, 3186 (from WAN)
08/18/2003 09:42:35 DHCP Client: Receive Ack from 62.45.45.74,Lease time=1800
08/18/2003 09:42:35 DHCP Client: Send Request,Request IP=62.45.180.144
Dat lijkt mij een beetje veel gesmurf.
Staan mijn settings zo fout of heb ik last van smurfen?
edit:
smurf =
Smurf is a simple attack based on IP spoofing and broadcasts. A single packet (such as an ICMP Echo Request) is sent as a directed broadcast to a subnet on the Internet. All the machines on that subnet respond to this broadcast. By spoofing the source IP address of the packet, all the responses will get sent to the spoofed IP address. Thus, a hacker can often flood a victim with hundreds of responses for every request the hacker sends out.
http://www.iss.net/securi...oits/IP/smurf/default.htm
[ Voor 10% gewijzigd door tatata op 18-08-2003 14:01 ]