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Session Report

Summary:
Test run at: 2022-01-18 09:57:23 GMT
Client Prefix (v4): 188.30.0.x/24
Client AS (v4): 206067 (H3GUK)
IPv4 Probes: 63
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 rewritten
Routable rewritten
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.

Warnings:

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 (188.30.0.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
188.30.0.x/24/31206067rewritten
188.30.0.x/24/30206067rewritten
188.30.0.x/24/29206067rewritten
188.30.0.x/24/28206067rewritten
188.30.0.x/24/27206067rewritten
188.30.0.x/24/26206067rewritten
188.30.0.x/24/25206067rewritten
188.30.0.x/24/24206067rewritten
188.30.1.x/24/23206067rewritten
188.30.2.x/24/22206067rewritten
188.30.4.x/24/21206067rewritten
188.30.8.x/24/20206067rewritten
188.30.16.x/24/19206067rewritten
188.30.32.x/24/18206067rewritten
188.30.64.x/24/17206067rewritten
188.30.128.x/24/16206067rewritten
188.31.0.x/24/15206067rewritten
188.28.0.x/24/14206067rewritten
188.26.0.x/24/138708rewritten
188.22.0.x/24/128447rewritten
188.14.0.x/24/113269rewritten
188.62.0.x/24/103303rewritten
188.94.0.x/24/952143rewritten
188.158.0.x/24/839501rewritten

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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