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Session Report

Summary:
Test run at: 2021-10-30 23:15:53 GMT
Client Prefix (v4): 179.127.73.x/24
Client AS (v4): 263283
IPv4 Probes: 66
Client Prefix (v6): 2804:1658:80xx::/40
Client AS (v6): 263283
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenreceived
Routable receivedreceived
Largest spoofable neighbor prefix length none/16
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 (179.127.73.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
179.127.73.x/24/31263283rewritten
179.127.73.x/24/30263283rewritten
179.127.73.x/24/29263283rewritten
179.127.73.x/24/28263283rewritten
179.127.73.x/24/27263283rewritten
179.127.73.x/24/26263283rewritten
179.127.73.x/24/25263283rewritten
179.127.73.x/24/24263283rewritten
179.127.72.x/24/23263283rewritten
179.127.75.x/24/22263283rewritten
179.127.77.x/24/21263283rewritten
179.127.65.x/24/2028287rewritten
179.127.89.x/24/1928292rewritten
179.127.105.x/24/18262469rewritten
179.127.9.x/24/1728209rewritten
179.127.201.x/24/16263642rewritten
179.126.73.x/24/1553006rewritten
179.125.73.x/24/14262988rewritten
179.123.73.x/24/1326615rewritten
179.119.73.x/24/1226599rewritten
179.111.73.x/24/1127699rewritten
179.95.73.x/24/1018881rewritten
179.63.73.x/24/9UNROUTEDrewritten
179.255.73.x/24/88167rewritten

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 10 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::242yes
2001:4978:1fb:6400::d22001:48d0:101:501::242yes
2001:49aa:111:aa00::112001:48d0:101:501::242yes
fd11:1111:1111::11112001:48d0:101:501::242yes
2001:48d0:101:501::1592001:48d0:101:501::247yes
2001:4978:1fb:6400::d22001:48d0:101:501::247yes
2001:49aa:111:aa00::112001:48d0:101:501::247yes
fd11:1111:1111::11112001:48d0:101:501::247yes
2001:48d0:101:501::1592001:610:510:115:192:42:115:98yes
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:45a6yes
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:acb4yes
2001:4978:1fb:6400::d22001:770:1c:7:225:90ff:fe0c:acb4yes
2001:49aa:111:aa00::112001:770:1c:7:225:90ff:fe0c:acb4yes
fd11:1111:1111::11112001:770:1c:7:225:90ff:fe0c:acb4yes
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2804:1658:80xx::/40/120263283yes
2804:1658:80xx::/40/112263283yes
2804:1658:80xx::/40/104263283yes
2804:1658:80xx::/40/96263283yes
2804:1658:80xx::/40/88263283yes
2804:1658:80xx::/40/80263283yes
2804:1658:80xx::/40/72263283yes
2804:1658:80xx::/40/64263283yes
2804:1658:80xx::/40/56263283yes
2804:1658:80xx::/40/48263283yes
2804:1658:80xx::/40/40263283yes
2804:1658:xx::/40/32263283yes
2804:16d8:80xx::/40/24262729yes
2804:9658:80xx::/40/16UNROUTEDyes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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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