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Session Report

Summary:
Test run at: 2022-08-08 13:14:40 GMT
Client Prefix (v4): 175.138.99.x/24
Client AS (v4): 4788 (TMNET-AS-AP)
IPv4 Probes: 60
Client Prefix (v6): 2001:e68:6bxx::/40
Client AS (v6): 4788 (TMNET-AS-AP)
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenblocked
Routable rewrittenblocked
Largest spoofable neighbor prefix length none/56
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 (175.138.99.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
175.138.99.x/24/314788rewritten
175.138.99.x/24/304788rewritten
175.138.99.x/24/294788rewritten
175.138.99.x/24/284788rewritten
175.138.99.x/24/274788rewritten
175.138.99.x/24/264788rewritten
175.138.99.x/24/254788rewritten
175.138.99.x/24/244788rewritten
175.138.98.x/24/234788rewritten
175.138.97.x/24/224788rewritten
175.138.103.x/24/214788rewritten
175.138.107.x/24/204788rewritten
175.138.115.x/24/194788rewritten
175.138.67.x/24/184788rewritten
175.138.35.x/24/174788rewritten
175.138.227.x/24/164788rewritten
175.139.99.x/24/154788rewritten
175.136.99.x/24/144788rewritten
175.142.99.x/24/134788rewritten
175.130.99.x/24/122516rewritten
175.154.99.x/24/114837rewritten
175.170.99.x/24/104837rewritten
175.202.99.x/24/94766rewritten
175.10.99.x/24/84134rewritten

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).
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
2001:e68:6bxx::/40/1204788yes
2001:e68:6bxx::/40/1124788yes
2001:e68:6bxx::/40/1044788yes
2001:e68:6bxx::/40/964788yes
2001:e68:6bxx::/40/884788yes
2001:e68:6bxx::/40/804788yes
2001:e68:6bxx::/40/724788yes
2001:e68:6bxx::/40/644788yes
2001:e68:6bxx::/40/564788yes
2001:e68:6bxx::/40/484788no
2001:e68:6bxx::/40/404788no
2001:e68:ebxx::/40/324788no
2001:ee8:6bxx::/40/24UNROUTEDno
2001:8e68:6bxx::/40/161221no

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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