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Session Report

Summary:
Test run at: 2021-06-23 01:47:09 GMT
Client Prefix (v4): 50.122.1.x/24
Client AS (v4): 5650 (FRONTIER-FRTR)
IPv4 Probes: 66
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 unknown
Routable unknown
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 (50.122.1.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
50.122.1.x/24/315650rewritten
50.122.1.x/24/305650rewritten
50.122.1.x/24/295650rewritten
50.122.1.x/24/285650rewritten
50.122.1.x/24/275650rewritten
50.122.1.x/24/265650rewritten
50.122.1.x/24/255650rewritten
50.122.1.x/24/245650rewritten
50.122.0.x/24/235650rewritten
50.122.3.x/24/225650rewritten
50.122.5.x/24/215650rewritten
50.122.9.x/24/205650rewritten
50.122.17.x/24/195650rewritten
50.122.33.x/24/185650rewritten
50.122.65.x/24/175650rewritten
50.122.129.x/24/165650rewritten
50.123.1.x/24/155650rewritten
50.120.1.x/24/145650rewritten
50.126.1.x/24/135650rewritten
50.114.1.x/24/1215129rewritten
50.106.1.x/24/1127017rewritten
50.90.1.x/24/1033363rewritten
50.58.1.x/24/93549rewritten
50.250.1.x/24/87922rewritten

Meaning of status in Received column:

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 able to spoof routable, non-adjacent source addresses through the first 1 IP hop(s).
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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