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Session Report

Summary:
Test run at: 2022-02-09 20:28:12 GMT
Client Prefix (v4): 83.233.104.x/24
Client AS (v4): 29518 (BREDBAND2)
IPv4 Probes: 63
Client Prefix (v6): 2a0e:73c2:c0xx::/40
Client AS (v6): 51519
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenblocked
Routable blockedblocked
Largest spoofable neighbor prefix length none/64

Meaning of result status in column:

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 (83.233.104.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
83.233.104.x/24/3129518natblock
83.233.104.x/24/3029518natblock
83.233.104.x/24/2929518natblock
83.233.104.x/24/2829518natblock
83.233.104.x/24/2729518natblock
83.233.104.x/24/2629518natblock
83.233.104.x/24/2529518natblock
83.233.104.x/24/2429518natblock
83.233.105.x/24/2329518natblock
83.233.106.x/24/2229518natblock
83.233.108.x/24/2129518natblock
83.233.96.x/24/2029518natblock
83.233.120.x/24/1929518natblock
83.233.72.x/24/1829518natblock
83.233.40.x/24/1729518natblock
83.233.232.x/24/1629518natblock
83.232.104.x/24/151136natblock
83.235.104.x/24/146799natblock
83.237.104.x/24/138359natblock
83.225.104.x/24/1230722natblock
83.249.104.x/24/111257natblock
83.201.104.x/24/103215natblock
83.169.104.x/24/98784natblock
83.105.104.x/24/8UNROUTEDnatblock

Meaning of status in Received column:

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 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::1592001:770:1c: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
2a0e:73c2:c0xx::/40/12051519yes
2a0e:73c2:c0xx::/40/11251519yes
2a0e:73c2:c0xx::/40/10451519yes
2a0e:73c2:c0xx::/40/9651519yes
2a0e:73c2:c0xx::/40/8851519yes
2a0e:73c2:c0xx::/40/8051519yes
2a0e:73c2:c0xx::/40/7251519yes
2a0e:73c2:c0xx::/40/6451519yes
2a0e:73c2:c0xx::/40/5651519no
2a0e:73c2:c0xx::/40/4851519no
2a0e:73c2:c0xx::/40/4051519no
2a0e:73c2:40xx::/40/3251519no
2a0e:7342:c0xx::/40/2460843no
2a0e:f3c2:c0xx::/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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