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Session Report

Summary:
Test run at: 2021-09-22 19:46:58 GMT
Client Prefix (v4): 187.19.232.x/24
Client AS (v4): 28126
IPv4 Probes: 66
Client Prefix (v6): 2804:29b8:50xx::/40
Client AS (v6): 28126
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA unknownblocked
Routable unknownblocked
Largest spoofable neighbor prefix length none/40
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 (187.19.232.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.19.232.x/24/3128126rewritten
187.19.232.x/24/3028126rewritten
187.19.232.x/24/2928126rewritten
187.19.232.x/24/2828126rewritten
187.19.232.x/24/2728126rewritten
187.19.232.x/24/2628126rewritten
187.19.232.x/24/2528126rewritten
187.19.232.x/24/2428126rewritten
187.19.233.x/24/2328126rewritten
187.19.234.x/24/2228126rewritten
187.19.236.x/24/2128126rewritten
187.19.224.x/24/2028126rewritten
187.19.248.x/24/1928126rewritten
187.19.200.x/24/1828126rewritten
187.19.168.x/24/1728126rewritten
187.19.104.x/24/1628130rewritten
187.18.232.x/24/1528270rewritten
187.17.232.x/24/1428267rewritten
187.23.232.x/24/1328573rewritten
187.27.232.x/24/1222085rewritten
187.3.232.x/24/1128573rewritten
187.51.232.x/24/1010429rewritten
187.83.232.x/24/926615rewritten
187.147.232.x/24/88151rewritten

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 unable to spoof routable, non-adjacent source addresses through even the first IP hop.
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
2804:29b8:50xx::/40/12028126yes
2804:29b8:50xx::/40/11228126yes
2804:29b8:50xx::/40/10428126yes
2804:29b8:50xx::/40/9628126yes
2804:29b8:50xx::/40/8828126yes
2804:29b8:50xx::/40/8028126yes
2804:29b8:50xx::/40/7228126yes
2804:29b8:50xx::/40/6428126yes
2804:29b8:50xx::/40/5628126no
2804:29b8:50xx::/40/4828126no
2804:29b8:50xx::/40/4028126yes
2804:29b8:d0xx::/40/3228126no
2804:2938:50xx::/40/24264004no
2804:a9b8:50xx::/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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