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Session Report

Summary:
Test run at: 2019-11-30 03:31:27 GMT
Client Prefix (v4): 187.49.128.x/24
Client AS (v4): 28145
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /20
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 (187.49.128.x/24) can spoof 4095 neighboring addresses (within your /20 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.49.128.x/24/3128145yes
187.49.128.x/24/3028145yes
187.49.128.x/24/2928145yes
187.49.128.x/24/2828145yes
187.49.128.x/24/2728145yes
187.49.128.x/24/2628145yes
187.49.128.x/24/2528145yes
187.49.128.x/24/2428145yes
187.49.129.x/24/2328145yes
187.49.130.x/24/2228145yes
187.49.132.x/24/2128145yes
187.49.136.x/24/2028145yes
187.49.144.x/24/19UNROUTEDno
187.49.160.x/24/18UNROUTEDno
187.49.192.x/24/1753059no
187.49.0.x/24/1628138no
187.48.128.x/24/1517379no
187.51.128.x/24/1410429no
187.53.128.x/24/138167no
187.57.128.x/24/1227699no
187.33.128.x/24/11UNROUTEDno
187.17.128.x/24/10UNROUTEDno
187.113.128.x/24/918881no
187.177.128.x/24/86503no

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 (but that netblock is within the source AS)

IPv4 Outbound Filtering Depth:

The tracefilter test found your host unable to spoof routable, non-adjacent source addresses through even the first IP hop.
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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