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Session Report

Summary:
Test run at: 2022-05-04 10:17:19 GMT
Client Prefix (v4): 45.248.49.x/24
Client AS (v4): 134697 (LAUNTEL-AS-AP)
IPv4 Probes: 60
Client Prefix (v6): 2404:e80:8xx::/40
Client AS (v6): 134697 (LAUNTEL-AS-AP)
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 (45.248.49.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
45.248.49.x/24/31134697rewritten
45.248.49.x/24/30134697rewritten
45.248.49.x/24/29134697rewritten
45.248.49.x/24/28134697rewritten
45.248.49.x/24/27134697rewritten
45.248.49.x/24/26134697rewritten
45.248.49.x/24/25134697rewritten
45.248.49.x/24/24134697rewritten
45.248.48.x/24/23134697rewritten
45.248.51.x/24/22134697rewritten
45.248.53.x/24/2121859rewritten
45.248.57.x/24/2045804rewritten
45.248.33.x/24/19135257rewritten
45.248.17.x/24/18132220rewritten
45.248.113.x/24/17UNROUTEDrewritten
45.248.177.x/24/16UNROUTEDrewritten
45.249.49.x/24/15135188rewritten
45.250.49.x/24/1445775rewritten
45.252.49.x/24/13UNROUTEDrewritten
45.240.49.x/24/1224863rewritten
45.232.49.x/24/11267256rewritten
45.216.49.x/24/1036925rewritten
45.184.49.x/24/9269314rewritten
45.120.49.x/24/8136557rewritten

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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