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Session Report

Summary:
Test run at: 2020-05-18 21:26:37 GMT
Client Prefix (v4): 177.71.27.x/24
Client AS (v4): 262427
IPv4 Probes: 75
Client Prefix (v6): 2804:448:1xx::/40
Client AS (v6): 262427
IPv6 Probes: 72
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/64
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 (177.71.27.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.71.27.x/24/31262427rewritten
177.71.27.x/24/30262427rewritten
177.71.27.x/24/29262427rewritten
177.71.27.x/24/28262427rewritten
177.71.27.x/24/27262427rewritten
177.71.27.x/24/26262427rewritten
177.71.27.x/24/25262427rewritten
177.71.27.x/24/24262427rewritten
177.71.26.x/24/23262427rewritten
177.71.25.x/24/22262427rewritten
177.71.31.x/24/21262427rewritten
177.71.19.x/24/2028254rewritten
177.71.11.x/24/1953131rewritten
177.71.59.x/24/18262560rewritten
177.71.91.x/24/17263604rewritten
177.71.155.x/24/1616509rewritten
177.70.27.x/24/1528209rewritten
177.69.27.x/24/1416735rewritten
177.67.27.x/24/1352662rewritten
177.79.27.x/24/1226599rewritten
177.87.27.x/24/11UNROUTEDrewritten
177.103.27.x/24/1027699rewritten
177.7.27.x/24/98167rewritten
177.199.27.x/24/826599rewritten

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::1592001:770:18:7:225:90ff:fe0c:acb4no
2001:4978:1fb:6400::d22001:770:18:7:225:90ff:fe0c:acb4no
2001:49aa:111:aa00::112001:770:18:7:225:90ff:fe0c:acb4no
fd11:1111:1111::11112001:770:18:7:225:90ff:fe0c:acb4no
2001:48d0:101:501::1592001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:4978:1fb:6400::d22001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:49aa:111:aa00::112001:df0:4:800:21c:c0ff:feb2:ad5fno
fd11:1111:1111::11112001:df0:4:800:21c:c0ff:feb2:ad5fno
2001:48d0:101:501::1592607:f278:2:13:ba27:ebff:fe3f:b21eno
2001:4978:1fb:6400::d22607:f278:2:13:ba27:ebff:fe3f:b21eno
2001:49aa:111:aa00::112607:f278:2:13:ba27:ebff:fe3f:b21eno
fd11:1111:1111::11112607:f278:2:13:ba27:ebff:fe3f:b21eno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2804:448:1xx::/40/120262427yes
2804:448:1xx::/40/112262427yes
2804:448:1xx::/40/104262427yes
2804:448:1xx::/40/96262427yes
2804:448:1xx::/40/88262427yes
2804:448:1xx::/40/80262427yes
2804:448:1xx::/40/72262427yes
2804:448:1xx::/40/64262427yes
2804:448:1xx::/40/56262427no
2804:448:1xx::/40/48262427no
2804:448:1xx::/40/40262427no
2804:448:81xx::/40/32262427no
2804:4c8:1xx::/40/24262465no
2804:8448:1xx::/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:
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