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Session Report

Summary:
Test run at: 2022-07-17 21:40:03 GMT
Client Prefix (v4): 103.155.183.x/24
Client AS (v4): 56196 (IBSSNET-NP)
IPv4 Probes: 60
Client Prefix (v6): 2403:3800:31xx::/40
Client AS (v6): 4007 (SUBISU-CABLENET-AS-AP)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedblocked
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.
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 (103.155.183.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
103.155.183.x/24/3156196natblock
103.155.183.x/24/3056196natblock
103.155.183.x/24/2956196natblock
103.155.183.x/24/2856196natblock
103.155.183.x/24/2756196natblock
103.155.183.x/24/2656196natblock
103.155.183.x/24/2556196natblock
103.155.183.x/24/2456196natblock
103.155.182.x/24/2356196natblock
103.155.181.x/24/227474natblock
103.155.179.x/24/2138203natblock
103.155.191.x/24/20141067natblock
103.155.167.x/24/19141064natblock
103.155.151.x/24/18141166natblock
103.155.247.x/24/17141078natblock
103.155.55.x/24/16141046natblock
103.154.183.x/24/15UNROUTEDnatblock
103.153.183.x/24/14140947natblock
103.159.183.x/24/13141293natblock
103.147.183.x/24/1263969natblock
103.139.183.x/24/11139250natblock
103.187.183.x/24/10UNROUTEDnatblock
103.219.183.x/24/963742natblock
103.27.183.x/24/8134684natblock

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
2403:3800:31xx::/40/1204007yes
2403:3800:31xx::/40/1124007yes
2403:3800:31xx::/40/1044007yes
2403:3800:31xx::/40/964007yes
2403:3800:31xx::/40/884007yes
2403:3800:31xx::/40/804007yes
2403:3800:31xx::/40/724007yes
2403:3800:31xx::/40/644007yes
2403:3800:31xx::/40/564007no
2403:3800:31xx::/40/484007no
2403:3800:31xx::/40/404007no
2403:3800:b1xx::/40/324007no
2403:3880:31xx::/40/24UNROUTEDno
2403:b800:31xx::/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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