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Session Report

Summary:
Test run at: 2019-06-29 02:42:44 GMT
Client Prefix (v4): 110.232.247.x/24
Client AS (v4): 17551 (DCSINTERNET-AS-AP)
IPv4 Probes: 93
Client Prefix (v6): 2407:5400:2xx::/40
Client AS (v6): 17551 (DCSINTERNET-AS-AP)
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/56
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 (110.232.247.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
110.232.247.x/24/3117551rewritten
110.232.247.x/24/3017551rewritten
110.232.247.x/24/2917551rewritten
110.232.247.x/24/2817551rewritten
110.232.247.x/24/2717551rewritten
110.232.247.x/24/2617551rewritten
110.232.247.x/24/2517551rewritten
110.232.247.x/24/2417551rewritten
110.232.246.x/24/2317551rewritten
110.232.245.x/24/2217551rewritten
110.232.243.x/24/2117551rewritten
110.232.255.x/24/20134319rewritten
110.232.231.x/24/197672rewritten
110.232.215.x/24/1817941rewritten
110.232.183.x/24/1718120rewritten
110.232.119.x/24/1656038rewritten
110.233.247.x/24/152518rewritten
110.234.247.x/24/14UNROUTEDrewritten
110.236.247.x/24/139808rewritten
110.224.247.x/24/12UNROUTEDrewritten
110.248.247.x/24/114837rewritten
110.200.247.x/24/109394rewritten
110.168.247.x/24/917552rewritten
110.104.247.x/24/89394rewritten

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 probes:
Spoofed source addressDestinationReceived
2001:48d0:101:501::1592001:410:102:1::78no
2001:4978:1fb:6400::d22001:410:102:1::78no
2001:49aa:111:aa00::112001:410:102:1::78no
fd11:1111:1111::11112001:410:102:1::78no
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::1592607:f278:2:13:ba27:ebff:fe3f:b21eno
2001:4978:1fb:6400::d22607:f278:2:13:ba27:ebff:fe3f:b21eno
2001:49aa:111:aa00::112607:f278:2:13:ba27:ebff:fe3f:b21eno
fd11:1111:1111::11112607:f278:2:13:ba27:ebff:fe3f:b21eno
IPv6 Adjacent Netblock Testing:
Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
2407:5400:2xx::/40/12017551yes
2407:5400:2xx::/40/11217551yes
2407:5400:2xx::/40/10417551yes
2407:5400:2xx::/40/9617551yes
2407:5400:2xx::/40/8817551yes
2407:5400:2xx::/40/8017551yes
2407:5400:2xx::/40/7217551yes
2407:5400:2xx::/40/6417551yes
2407:5400:2xx::/40/5617551yes
2407:5400:2xx::/40/4817551no
2407:5400:2xx::/40/4017551no
2407:5400:82xx::/40/3217551no
2407:5480:2xx::/40/24UNROUTEDno
2407:d400:2xx::/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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