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Session Report

Summary:
Test run at: 2022-10-12 23:51:25 GMT
Client Prefix (v4): 194.36.75.x/24
Client AS (v4): 51333 (ARCOLINK-ASN)
IPv4 Probes: 60
Client Prefix (v6): 2a0c:bdc0:10xx::/40
Client AS (v6): 51333 (ARCOLINK-ASN)
IPv6 Probes: 52
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable blockedreceived
Largest spoofable neighbor prefix length /25/16
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 (194.36.75.x/24) can spoof 127 neighboring addresses (within your /25 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
194.36.75.x/24/3151333yes
194.36.75.x/24/3051333yes
194.36.75.x/24/2951333yes
194.36.75.x/24/2851333yes
194.36.75.x/24/2751333yes
194.36.75.x/24/2651333yes
194.36.75.x/24/2551333yes
194.36.75.x/24/2451333no
194.36.74.x/24/2351333no
194.36.73.x/24/2251333no
194.36.79.x/24/21UNROUTEDno
194.36.67.x/24/20UNROUTEDno
194.36.91.x/24/1944709no
194.36.107.x/24/1848146no
194.36.11.x/24/17198864no
194.36.203.x/24/1642947no
194.37.75.x/24/1541915no
194.38.75.x/24/1412350no
194.32.75.x/24/1338862no
194.44.75.x/24/123255no
194.52.75.x/24/11UNROUTEDno
194.4.75.x/24/1039771no
194.100.75.x/24/916086no
194.164.75.x/24/8206509no

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::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::247yes
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::1592001:610:510:115:192:42:115:98yes
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:45a6yes
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:acb4yes
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
2a0c:bdc0:10xx::/40/12051333yes
2a0c:bdc0:10xx::/40/11251333yes
2a0c:bdc0:10xx::/40/10451333yes
2a0c:bdc0:10xx::/40/9651333yes
2a0c:bdc0:10xx::/40/8851333yes
2a0c:bdc0:10xx::/40/8051333yes
2a0c:bdc0:10xx::/40/7251333yes
2a0c:bdc0:10xx::/40/6451333yes
2a0c:bdc0:10xx::/40/5651333yes
2a0c:bdc0:10xx::/40/4851333yes
2a0c:bdc0:10xx::/40/4051333yes
2a0c:bdc0:90xx::/40/3251333yes
2a0c:bd40:10xx::/40/24UNROUTEDno
2a0c:3dc0:10xx::/40/1661323yes

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
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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