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Session Report

Summary:
Test run at: 2021-11-12 16:26:56 GMT
Client Prefix (v4): 37.77.99.x/24
Client AS (v4): 15605 (CONNESI)
IPv4 Probes: 66
Client Prefix (v6): 2a00:1cc8:xx::/40
Client AS (v6): 15605 (CONNESI)
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable received
Largest spoofable neighbor prefix length /21

Meaning of result status in column:

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 (37.77.99.x/24) can spoof 2047 neighboring addresses (within your /21 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
37.77.99.x/24/3115605yes
37.77.99.x/24/3015605no
37.77.99.x/24/2915605yes
37.77.99.x/24/2815605yes
37.77.99.x/24/2715605no
37.77.99.x/24/2615605yes
37.77.99.x/24/2515605yes
37.77.99.x/24/2415605yes
37.77.98.x/24/2315605yes
37.77.97.x/24/2215605yes
37.77.103.x/24/2139739yes
37.77.107.x/24/209123no
37.77.115.x/24/19198471no
37.77.67.x/24/18205473no
37.77.35.x/24/1744530no
37.77.227.x/24/16202237no
37.76.99.x/24/155483no
37.79.99.x/24/1412389no
37.73.99.x/24/1334058no
37.69.99.x/24/1215557no
37.93.99.x/24/113320no
37.109.99.x/24/108374no
37.13.99.x/24/93352no
37.205.99.x/24/8UNROUTEDno

Meaning of status in Received column:

noPackets spoofed from adjacent netblock were not received, probably due to blocking
yesPackets spoofed from adjacent netblock were received
yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)

IPv4 Outbound Filtering Depth:

The tracefilter test found your host able to spoof routable, non-adjacent source addresses through the first 5 IP hop(s).
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.

  

  
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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