Logo

Session Report

Summary:
Test run at: 2021-09-20 13:13:33 GMT
Client Prefix (v4): 131.255.117.x/24
Client AS (v4): 264478
IPv4 Probes: 66
Client Prefix (v6): 2804:2038:80xx::/40
Client AS (v6): 264478
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
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 (131.255.117.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
131.255.117.x/24/31264478natblock
131.255.117.x/24/30264478natblock
131.255.117.x/24/29264478natblock
131.255.117.x/24/28264478natblock
131.255.117.x/24/27264478natblock
131.255.117.x/24/26264478natblock
131.255.117.x/24/25264478natblock
131.255.117.x/24/24264478natblock
131.255.116.x/24/23264478natblock
131.255.119.x/24/22264478natblock
131.255.113.x/24/21264487natblock
131.255.125.x/24/20263297natblock
131.255.101.x/24/1928165sendto
131.255.85.x/24/18264471sendto
131.255.53.x/24/17262675sendto
131.255.245.x/24/16262962sendto
131.254.117.x/24/151938sendto
131.253.117.x/24/148070sendto
131.251.117.x/24/13786sendto
131.247.117.x/24/125661sendto
131.239.117.x/24/1114985sendto
131.223.117.x/24/10UNROUTEDsendto
131.191.117.x/24/914677sendto
131.127.117.x/24/8UNROUTEDsendto

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.
sendtoThe spoofer client was unable to send spoofed headers due to an operating system restriction.

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