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Session Report

Summary:
Test run at: 2022-04-11 07:08:11 GMT
Client Prefix (v4): 110.44.115.x/24
Client AS (v4): 45650 (VIANET-NP)
IPv4 Probes: 60
Client Prefix (v6): 2404:7c00:xx::/40
Client AS (v6): 45650 (VIANET-NP)
IPv6 Probes: 56
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

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
110.44.115.x/24/3145650rewritten
110.44.115.x/24/3045650rewritten
110.44.115.x/24/2945650rewritten
110.44.115.x/24/2845650rewritten
110.44.115.x/24/2745650rewritten
110.44.115.x/24/2645650rewritten
110.44.115.x/24/2545650rewritten
110.44.115.x/24/2445650rewritten
110.44.114.x/24/2345650rewritten
110.44.113.x/24/2245650rewritten
110.44.119.x/24/2145650rewritten
110.44.123.x/24/2045650rewritten
110.44.99.x/24/1945117rewritten
110.44.83.x/24/189351rewritten
110.44.51.x/24/1717878rewritten
110.44.243.x/24/169845rewritten
110.45.115.x/24/1510066rewritten
110.46.115.x/24/149845rewritten
110.40.115.x/24/13UNROUTEDrewritten
110.36.115.x/24/1238264rewritten
110.60.115.x/24/119394rewritten
110.12.115.x/24/109318rewritten
110.108.115.x/24/99394rewritten
110.172.115.x/24/845996rewritten

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::1592001:770:1c: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
2404:7c00:xx::/40/12045650yes
2404:7c00:xx::/40/11245650yes
2404:7c00:xx::/40/10445650yes
2404:7c00:xx::/40/9645650yes
2404:7c00:xx::/40/8845650yes
2404:7c00:xx::/40/8045650yes
2404:7c00:xx::/40/7245650yes
2404:7c00:xx::/40/6445650yes
2404:7c00:xx::/40/5645650no
2404:7c00:xx::/40/4845650no
2404:7c00:xx::/40/4045650no
2404:7c00:80xx::/40/3245650no
2404:7c80:xx::/40/24133661no
2404:fc00: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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