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Session Report

Summary:
Test run at: 2021-10-24 01:43:54 GMT
Client Prefix (v4): 138.122.135.x/24
Client AS (v4): 264478
IPv4 Probes: 66
Client Prefix (v6): 2804:2038:80xx::/40
Client AS (v6): 264478
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/48

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
138.122.135.x/24/31264478natblock
138.122.135.x/24/30264478natblock
138.122.135.x/24/29264478natblock
138.122.135.x/24/28264478natblock
138.122.135.x/24/27264478natblock
138.122.135.x/24/26264478natblock
138.122.135.x/24/25264478natblock
138.122.135.x/24/24264478natblock
138.122.134.x/24/23264478natblock
138.122.133.x/24/22264478natblock
138.122.131.x/24/2120207natblock
138.122.143.x/24/2061678natblock
138.122.151.x/24/19UNROUTEDnatblock
138.122.167.x/24/1852800natblock
138.122.199.x/24/1761813natblock
138.122.7.x/24/16269974natblock
138.123.135.x/24/1546887natblock
138.120.135.x/24/14UNROUTEDnatblock
138.126.135.x/24/13UNROUTEDnatblock
138.114.135.x/24/12UNROUTEDnatblock
138.106.135.x/24/11202116natblock
138.90.135.x/24/10UNROUTEDnatblock
138.58.135.x/24/9UNROUTEDnatblock
138.250.135.x/24/8786natblock

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
2804:2038:80xx::/40/120264478yes
2804:2038:80xx::/40/112264478yes
2804:2038:80xx::/40/104264478yes
2804:2038:80xx::/40/96264478yes
2804:2038:80xx::/40/88264478yes
2804:2038:80xx::/40/80264478yes
2804:2038:80xx::/40/72264478yes
2804:2038:80xx::/40/64264478yes
2804:2038:80xx::/40/56264478yes
2804:2038:80xx::/40/48264478yes
2804:2038:80xx::/40/40264478no
2804:2038:xx::/40/32264478no
2804:20b8:80xx::/40/24264510no
2804:a038:80xx::/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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