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Session Report

Summary:
Test run at: 2021-03-04 09:08:39 GMT
Client Prefix (v4): 109.73.81.x/24
Client AS (v4): 15605 (CONNESI)
IPv4 Probes: 69
Client Prefix (v6): 2a00:1cc8:xx::/40
Client AS (v6): 15605 (CONNESI)
IPv6 Probes: 60
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 (109.73.81.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
109.73.81.x/24/3115605natblock
109.73.81.x/24/3015605natblock
109.73.81.x/24/2915605natblock
109.73.81.x/24/2815605natblock
109.73.81.x/24/2715605natblock
109.73.81.x/24/2615605natblock
109.73.81.x/24/2515605natblock
109.73.81.x/24/2415605natblock
109.73.80.x/24/2315605natblock
109.73.83.x/24/2215605natblock
109.73.85.x/24/2115605natblock
109.73.89.x/24/2015605natblock
109.73.65.x/24/1920860natblock
109.73.113.x/24/1824958natblock
109.73.17.x/24/17196714natblock
109.73.209.x/24/16196843natblock
109.72.81.x/24/1548635natblock
109.75.81.x/24/149063natblock
109.77.81.x/24/1315502natblock
109.65.81.x/24/128551natblock
109.89.81.x/24/1112392natblock
109.105.81.x/24/1033894natblock
109.9.81.x/24/915557natblock
109.201.81.x/24/842322natblock

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
2a00:1cc8:xx::/40/12015605natblock
2a00:1cc8:xx::/40/11215605natblock
2a00:1cc8:xx::/40/10415605natblock
2a00:1cc8:xx::/40/9615605natblock
2a00:1cc8:xx::/40/8815605natblock
2a00:1cc8:xx::/40/8015605natblock
2a00:1cc8:xx::/40/7215605natblock
2a00:1cc8:xx::/40/6415605natblock
2a00:1cc8:xx::/40/5615605natblock
2a00:1cc8:xx::/40/4815605natblock
2a00:1cc8:xx::/40/4015605natblock
2a00:1cc8:80xx::/40/32UNROUTEDnatblock
2a00:1c48:xx::/40/2412695natblock
2a00:9cc8:xx::/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.
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