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Session Report

Summary:
Test run at: 2024-06-01 01:29:34 GMT
Client Prefix (v4): 45.164.81.x/24
Client AS (v4): 268608
IPv4 Probes: 69
Client Prefix (v6): 2804:53d0:1xx::/40
Client AS (v6): 268608
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 (45.164.81.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
45.164.81.x/24/31268608rewritten
45.164.81.x/24/30268608rewritten
45.164.81.x/24/29268608rewritten
45.164.81.x/24/28268608rewritten
45.164.81.x/24/27268608rewritten
45.164.81.x/24/26268608rewritten
45.164.81.x/24/25268608rewritten
45.164.81.x/24/24268608rewritten
45.164.80.x/24/23268608rewritten
45.164.83.x/24/22268608rewritten
45.164.85.x/24/21268609natblock
45.164.89.x/24/20268610natblock
45.164.65.x/24/19267699natblock
45.164.113.x/24/18UNROUTEDnatblock
45.164.17.x/24/17267695natblock
45.164.209.x/24/16268637natblock
45.165.81.x/24/1561595natblock
45.166.81.x/24/14267712natblock
45.160.81.x/24/13268462natblock
45.172.81.x/24/12264552natblock
45.180.81.x/24/11269431natblock
45.132.81.x/24/103320natblock
45.228.81.x/24/9267053natblock
45.36.81.x/24/811426natblock

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.
rewrittenThe source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

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.
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