Logo

Session Report

Summary:
Test run at: 2017-06-06 06:13:05 GMT
Client Prefix (v4): 133.155.188.x/24
Client AS (v4): 7524 (HANSHIN)
IPv4 Probes: 119
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length none
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 (133.155.188.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
133.155.188.x/24/317524natblock
133.155.188.x/24/307524natblock
133.155.188.x/24/297524natblock
133.155.188.x/24/287524natblock
133.155.188.x/24/277524natblock
133.155.188.x/24/267524natblock
133.155.188.x/24/257524natblock
133.155.188.x/24/247524natblock
133.155.189.x/24/237524natblock
133.155.190.x/24/227524natblock
133.155.184.x/24/217524natblock
133.155.180.x/24/207524natblock
133.155.172.x/24/197524natblock
133.155.156.x/24/187524natblock
133.155.252.x/24/177524natblock
133.155.60.x/24/167690natblock
133.154.188.x/24/15UNROUTEDnatblock
133.153.188.x/24/1417509natblock
133.159.188.x/24/13UNROUTEDnatblock
133.147.188.x/24/12UNROUTEDnatblock
133.139.188.x/24/11UNROUTEDnatblock
133.187.188.x/24/102907natblock
133.219.188.x/24/9UNROUTEDnatblock
133.27.188.x/24/838635natblock

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 unable to spoof routable, non-adjacent source addresses through even the first IP hop.
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