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Session Report

Summary:
Test run at: 2023-11-02 20:36:05 GMT
Client Prefix (v4): 196.43.177.x/24
Client AS (v4): 327687 (RENU)
IPv4 Probes: 69
Client Prefix (v6): 2c0f:f6d0:xx::/40
Client AS (v6): 327687 (RENU)
IPv6 Probes: 60
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA receivedblocked
Routable receivedreceived
Largest spoofable neighbor prefix length /8/32
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 (196.43.177.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
196.43.177.x/24/31327687yes
196.43.177.x/24/30327687yes
196.43.177.x/24/29327687yes
196.43.177.x/24/28327687yes
196.43.177.x/24/27327687yes
196.43.177.x/24/26327687yes
196.43.177.x/24/25327687yes
196.43.177.x/24/24327687yes
196.43.176.x/24/23327687yes
196.43.179.x/24/22327687yes
196.43.181.x/24/21327687yes
196.43.185.x/24/20327687yes
196.43.161.x/24/19327687yes
196.43.145.x/24/18327687yes
196.43.241.x/24/1737477yes
196.43.49.x/24/165713yes
196.42.177.x/24/15UNROUTEDnatblock
196.41.177.x/24/1416637yes
196.47.177.x/24/1336974yes
196.35.177.x/24/123741yes
196.59.177.x/24/1137518yes
196.11.177.x/24/10327996yes
196.107.177.x/24/933771yes
196.171.177.x/24/824691yes

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)
natblockSpoofed probe packets appear to be blocked by your local NAT or firewall rather than being rewritten with a public source address.

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::5458:517ayes
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::242yes
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::247yes
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::1592001:610:510:115:192:42:115:98yes
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: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
2c0f:f6d0:xx::/40/120327687yes
2c0f:f6d0:xx::/40/112327687yes
2c0f:f6d0:xx::/40/104327687yes
2c0f:f6d0:xx::/40/96327687yes
2c0f:f6d0:xx::/40/88327687yes
2c0f:f6d0:xx::/40/80327687yes
2c0f:f6d0:xx::/40/72327687yes
2c0f:f6d0:xx::/40/64327687yes
2c0f:f6d0:xx::/40/56327687yes
2c0f:f6d0:xx::/40/48327687yes
2c0f:f6d0:xx::/40/40327687yes
2c0f:f6d0:80xx::/40/32327687yes
2c0f:f650:xx::/40/24UNROUTEDno
2c0f:76d0:xx::/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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