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Session Report

Summary:
Test run at: 2022-02-24 02:42:53 GMT
Client Prefix (v4): 149.56.79.x/24
Client AS (v4): 16276 (OVH)
IPv4 Probes: 60
Client Prefix (v6): 2607:5300:2xx::/40
Client AS (v6): 16276 (OVH)
IPv6 Probes: 56
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 (149.56.79.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
149.56.79.x/24/3116276natblock
149.56.79.x/24/3016276natblock
149.56.79.x/24/2916276natblock
149.56.79.x/24/2816276natblock
149.56.79.x/24/2716276natblock
149.56.79.x/24/2616276natblock
149.56.79.x/24/2516276natblock
149.56.79.x/24/2416276natblock
149.56.78.x/24/2316276natblock
149.56.77.x/24/2216276natblock
149.56.75.x/24/2116276natblock
149.56.71.x/24/2016276natblock
149.56.95.x/24/1916276natblock
149.56.111.x/24/1816276natblock
149.56.15.x/24/1716276natblock
149.56.207.x/24/1616276natblock
149.57.79.x/24/15UNROUTEDnatblock
149.58.79.x/24/1432835natblock
149.60.79.x/24/13UNROUTEDnatblock
149.48.79.x/24/12UNROUTEDnatblock
149.40.79.x/24/11UNROUTEDnatblock
149.24.79.x/24/1054624natblock
149.120.79.x/24/97922natblock
149.184.79.x/24/8UNROUTEDnatblock

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.
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
2607:5300:2xx::/40/12016276natblock
2607:5300:2xx::/40/11216276natblock
2607:5300:2xx::/40/10416276natblock
2607:5300:2xx::/40/9616276natblock
2607:5300:2xx::/40/8816276natblock
2607:5300:2xx::/40/8016276natblock
2607:5300:2xx::/40/7216276natblock
2607:5300:2xx::/40/6416276natblock
2607:5300:2xx::/40/5616276natblock
2607:5300:2xx::/40/4816276natblock
2607:5300:2xx::/40/4016276natblock
2607:5300:82xx::/40/3216276natblock
2607:5380:2xx::/40/2453610natblock
2607:d300:2xx::/40/168059natblock

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.
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