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Session Report

Summary:
Test run at: 2023-07-28 15:21:46 GMT
Client Prefix (v4): 41.63.32.x/24
Client AS (v4): 37532 (ZAMREN)
IPv4 Probes: 60
Client Prefix (v6): 2c0f:f670:xx::/40
Client AS (v6): 37532 (ZAMREN)
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
Largest spoofable neighbor prefix length /18/32
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 (41.63.32.x/24) can spoof 16383 neighboring addresses (within your /18 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
41.63.32.x/24/3137532yes
41.63.32.x/24/3037532yes
41.63.32.x/24/2937532yes
41.63.32.x/24/2837532yes
41.63.32.x/24/2737532yes
41.63.32.x/24/2637532yes
41.63.32.x/24/2537532yes
41.63.32.x/24/2437532yes
41.63.33.x/24/2337532yes
41.63.34.x/24/2237532yes
41.63.36.x/24/2137532yes
41.63.40.x/24/2037532yes
41.63.48.x/24/1937532yes
41.63.0.x/24/1837532yes
41.63.96.x/24/1722822no
41.63.160.x/24/1636907no
41.62.32.x/24/1537705no
41.61.32.x/24/1436943no
41.59.32.x/24/1333765no
41.55.32.x/24/1237168no
41.47.32.x/24/118452no
41.31.32.x/24/1029975no
41.127.32.x/24/916637no
41.191.32.x/24/836974no

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 able to spoof routable, non-adjacent source addresses through the first 2 IP hop(s).
IPv6 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.

  

  
IPv6 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:48d0:101:501::242no
2001:4978:1fb:6400::d22001:48d0:101:501::242no
2001:49aa:111:aa00::112001:48d0:101:501::242no
fd11:1111:1111::11112001:48d0:101:501::242no
2001:48d0:101:501::1592001:48d0:101:501::247no
2001:4978:1fb:6400::d22001:48d0:101:501::247no
2001:49aa:111:aa00::112001:48d0:101:501::247no
fd11:1111:1111::11112001:48d0:101:501::247no
2001:48d0:101:501::1592001:610:510:115:192:42:115:98no
2001:4978:1fb:6400::d22001:610:510:115:192:42:115:98no
2001:49aa:111:aa00::112001:610:510:115:192:42:115:98no
fd11:1111:1111::11112001:610:510:115:192:42:115:98no
2001:48d0:101:501::1592001:630:212:225:225:90ff:fe0c:45a6no
2001:4978:1fb:6400::d22001:630:212:225:225:90ff:fe0c:45a6no
2001:49aa:111:aa00::112001:630:212:225:225:90ff:fe0c:45a6no
fd11:1111:1111::11112001:630:212:225:225:90ff:fe0c:45a6no
2001:48d0:101:501::1592001:770:1c:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4no
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2c0f:f670:xx::/40/12037532yes
2c0f:f670:xx::/40/11237532yes
2c0f:f670:xx::/40/10437532yes
2c0f:f670:xx::/40/9637532yes
2c0f:f670:xx::/40/8837532yes
2c0f:f670:xx::/40/8037532yes
2c0f:f670:xx::/40/7237532yes
2c0f:f670:xx::/40/6437532yes
2c0f:f670:xx::/40/5637532yes
2c0f:f670:xx::/40/4837532yes
2c0f:f670:xx::/40/4037532yes
2c0f:f670:80xx::/40/3237532yes
2c0f:f6f0:xx::/40/24UNROUTEDno
2c0f:7670:xx::/40/16UNROUTEDno

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)
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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