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Session Report

Summary:
Test run at: 2023-11-01 22:15:35 GMT
Client Prefix (v4): 177.221.67.x/24
Client AS (v4): 52651
IPv4 Probes: 69
Client Prefix (v6): 2804:bf0:4xx::/40
Client AS (v6): 52651
IPv6 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenblocked
Routable receivedblocked
Largest spoofable neighbor prefix length /26/64
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 (177.221.67.x/24) can spoof 63 neighboring addresses (within your /26 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
177.221.67.x/24/3152651natblock
177.221.67.x/24/3052651natblock
177.221.67.x/24/2952651rewritten
177.221.67.x/24/2852651rewritten
177.221.67.x/24/2752651rewritten
177.221.67.x/24/2652651yes
177.221.67.x/24/2552651rewritten
177.221.67.x/24/2452651rewritten
177.221.66.x/24/2352651rewritten
177.221.65.x/24/2252651rewritten
177.221.71.x/24/2152651rewritten
177.221.75.x/24/2028201rewritten
177.221.83.x/24/1952653rewritten
177.221.99.x/24/1852654rewritten
177.221.3.x/24/1728294rewritten
177.221.195.x/24/1652682rewritten
177.220.67.x/24/1553187rewritten
177.223.67.x/24/1452722rewritten
177.217.67.x/24/1326615rewritten
177.213.67.x/24/1226599rewritten
177.205.67.x/24/1118881rewritten
177.253.67.x/24/1027831rewritten
177.157.67.x/24/918881rewritten
177.93.67.x/24/8263137rewritten

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received (but that netblock is within the source AS)
natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.
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::1592001:40b0:7500:280::5458:517ano
2001:4978:1fb:6400::d22001:40b0:7500:280::5458:517ano
2001:49aa:111:aa00::112001:40b0:7500:280::5458:517ano
fd11:1111:1111::11112001:40b0:7500:280::5458:517ano
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:bf0:4xx::/40/12052651yes
2804:bf0:4xx::/40/11252651yes
2804:bf0:4xx::/40/10452651yes
2804:bf0:4xx::/40/9652651yes
2804:bf0:4xx::/40/8852651yes
2804:bf0:4xx::/40/8052651yes
2804:bf0:4xx::/40/7252651yes
2804:bf0:4xx::/40/6452651yes
2804:bf0:4xx::/40/5652651no
2804:bf0:4xx::/40/4852651no
2804:bf0:4xx::/40/4052651no
2804:bf0:84xx::/40/3252651no
2804:b70:4xx::/40/24UNROUTEDno
2804:8bf0:4xx::/40/16273769no

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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