Logo

Session Report

Summary:
Test run at: 2017-05-26 18:03:50 GMT
Client Prefix (v4): 217.240.81.x/24
Client AS (v4): 3320 (DTAG)
IPv4 Probes: 118
Client Prefix (v6): 2003:6:15xx::/40
Client AS (v6): 3320 (DTAG)
IPv6 Probes: 78
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length nonenone
Spoof status key
receivedSpoofed packet was received.Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewrittenSpoofed packet was received, but the source address was changed en route.
blockedSpoofed packet was not received, but unspoofed packet was.
unknownNeither spoofed nor unspoofed packet was received.
IPv4 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  

IPv4 Adjacent Netblock Testing:

Your host (217.240.81.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
217.240.81.x/24/313320natblock
217.240.81.x/24/303320natblock
217.240.81.x/24/293320natblock
217.240.81.x/24/283320natblock
217.240.81.x/24/273320natblock
217.240.81.x/24/263320natblock
217.240.81.x/24/253320natblock
217.240.81.x/24/243320natblock
217.240.80.x/24/233320natblock
217.240.83.x/24/223320natblock
217.240.85.x/24/213320natblock
217.240.89.x/24/203320natblock
217.240.65.x/24/193320natblock
217.240.113.x/24/183320natblock
217.240.17.x/24/173320natblock
217.240.209.x/24/163320natblock
217.241.81.x/24/153320natblock
217.242.81.x/24/143320natblock
217.244.81.x/24/133320natblock
217.248.81.x/24/123320natblock
217.224.81.x/24/113320natblock
217.208.81.x/24/103301natblock
217.176.81.x/24/95503natblock
217.112.81.x/24/829550natblock

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 1 IP hop(s).
IPv6 AS Route:
This test run probed the following paths in order to infer your ability to send different spoofed source packets. Each node in the graph corresponds to an autonomous system, i.e. different Internet service providers. NOTE: This graph does NOT show if an AS blocks spoofed packets, only the path taken by received spoofed packets. The IP Path Details are available for this run. If non-spoofed packets weren't received at a destination, the traceroute to that destination is not included in this graph and may even cause a totally empty graph.

  

  
IPv6 probes:
Spoofed source addressDestinationReceived
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2003:6:15xx::/40/1203320natblock
2003:6:15xx::/40/1123320natblock
2003:6:15xx::/40/1043320natblock
2003:6:15xx::/40/963320natblock
2003:6:15xx::/40/883320natblock
2003:6:15xx::/40/803320natblock
2003:6:15xx::/40/723320natblock
2003:6:15xx::/40/643320natblock
2003:6:15xx::/40/563320natblock
2003:6:15xx::/40/483320natblock
2003:6:15xx::/40/403320natblock
2003:6:95xx::/40/323320natblock
2003:86:15xx::/40/243320natblock
2003:8006:15xx::/40/16UNROUTEDnatblock

Meaning of status in Received column:

natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
Summary:
The results from all tests are aggregated to produce a summary "State of IP Spoofing" report.
Feedback:
We welcome questions and feedback to the Spoofer Information Mailing List and invite users to join the Spoofer Users Mailing List for discussion and announcements.
Last Modified