Logo

Session Report

Summary:
Test run at: 2022-05-18 16:32:00 GMT
Client Prefix (v4): 142.231.112.x/24
Client AS (v4): 271 (BCNET-AS)
IPv4 Probes: 60
Client Prefix (v6): 2607:f8f0:6xx::/40
Client AS (v6): 271 (BCNET-AS)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedreceived
Routable blockedreceived
Largest spoofable neighbor prefix length /24/16
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 (142.231.112.x/24) can spoof 255 neighboring addresses (within your /24 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
142.231.112.x/24/31271yes
142.231.112.x/24/30271yes
142.231.112.x/24/29271yes
142.231.112.x/24/28271yes
142.231.112.x/24/27271yes
142.231.112.x/24/26271yes
142.231.112.x/24/25271yes
142.231.112.x/24/24271yes
142.231.113.x/24/23271no
142.231.114.x/24/22271no
142.231.116.x/24/21271no
142.231.120.x/24/20271no
142.231.96.x/24/19271no
142.231.80.x/24/18393249no
142.231.48.x/24/17271no
142.231.240.x/24/16271no
142.230.112.x/24/15UNROUTEDno
142.229.112.x/24/14393952no
142.227.112.x/24/1323307no
142.239.112.x/24/12UNROUTEDno
142.247.112.x/24/1125019no
142.199.112.x/24/1016623no
142.167.112.x/24/9855no
142.103.112.x/24/8393249no

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)

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::242yes
2001:4978:1fb:6400::d22001:48d0:101:501::242yes
2001:49aa:111:aa00::112001:48d0:101:501::242yes
fd11:1111:1111::11112001:48d0:101:501::242yes
2001:48d0:101:501::1592001:48d0:101:501::247yes
2001:4978:1fb:6400::d22001:48d0:101:501::247yes
2001:49aa:111:aa00::112001:48d0:101:501::247yes
fd11:1111:1111::11112001:48d0:101:501::247yes
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
2607:f8f0:6xx::/40/120271yes
2607:f8f0:6xx::/40/112271yes
2607:f8f0:6xx::/40/104271yes
2607:f8f0:6xx::/40/96271yes
2607:f8f0:6xx::/40/88271yes
2607:f8f0:6xx::/40/80271yes
2607:f8f0:6xx::/40/72271yes
2607:f8f0:6xx::/40/64271yes
2607:f8f0:6xx::/40/56271yes
2607:f8f0:6xx::/40/48271yes
2607:f8f0:6xx::/40/40UNROUTEDyes
2607:f8f0:86xx::/40/32UNROUTEDyes
2607:f870:6xx::/40/2411992yes
2607:78f0:6xx::/40/16UNROUTEDyes

Meaning of status in Received column:

yesPackets spoofed from adjacent netblock were received
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.
Last Modified