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Session Report

Summary:
Test run at: 2023-04-03 20:37:37 GMT
Client Prefix (v4): 91.238.104.x/24
Client AS (v4): 50321 (BYTES-AS)
IPv4 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4
Private - RFC1918 blocked
Routable blocked
Largest spoofable neighbor prefix length /23
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 (91.238.104.x/24) can spoof 511 neighboring addresses (within your /23 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
91.238.104.x/24/3150321yes
91.238.104.x/24/3050321yes
91.238.104.x/24/2950321yes
91.238.104.x/24/2850321yes
91.238.104.x/24/2750321yes
91.238.104.x/24/2650321yes
91.238.104.x/24/2550321yes
91.238.104.x/24/2450321yes
91.238.105.x/24/2350321yes
91.238.106.x/24/2234909no
91.238.108.x/24/2157363no
91.238.96.x/24/20UNROUTEDno
91.238.120.x/24/19198712no
91.238.72.x/24/1861236no
91.238.40.x/24/17204229no
91.238.232.x/24/1629314no
91.239.104.x/24/1550161no
91.236.104.x/24/14UNROUTEDno
91.234.104.x/24/13200780no
91.230.104.x/24/1257074no
91.254.104.x/24/111267no
91.206.104.x/24/1015532no
91.174.104.x/24/912322no
91.110.104.x/24/812576no

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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