Logo

Session Report

Summary:
Test run at: 2022-02-23 19:35:13 GMT
Client Prefix (v4): 187.121.124.x/24
Client AS (v4): 19182
IPv4 Probes: 60
Client Prefix (v6): 2804:431:d7xx::/40
Client AS (v6): 27699
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
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 (187.121.124.x/24) can spoof 0 neighboring addresses


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
187.121.124.x/24/3119182rewritten
187.121.124.x/24/3019182rewritten
187.121.124.x/24/2919182rewritten
187.121.124.x/24/2819182rewritten
187.121.124.x/24/2719182rewritten
187.121.124.x/24/2619182rewritten
187.121.124.x/24/2519182rewritten
187.121.124.x/24/2419182rewritten
187.121.125.x/24/2319182rewritten
187.121.126.x/24/2219182rewritten
187.121.120.x/24/2119182rewritten
187.121.116.x/24/2019182rewritten
187.121.108.x/24/1919182rewritten
187.121.92.x/24/1819182rewritten
187.121.60.x/24/1719182rewritten
187.121.252.x/24/16UNROUTEDrewritten
187.120.124.x/24/1528202rewritten
187.123.124.x/24/1428573rewritten
187.125.124.x/24/137738rewritten
187.113.124.x/24/1218881rewritten
187.105.124.x/24/1128573rewritten
187.89.124.x/24/1026599rewritten
187.57.124.x/24/927699rewritten
187.249.124.x/24/832098rewritten

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 able to spoof routable, non-adjacent source addresses through the first 1 IP hop(s).
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
2804:431:d7xx::/40/12027699yes
2804:431:d7xx::/40/11227699yes
2804:431:d7xx::/40/10427699yes
2804:431:d7xx::/40/9627699yes
2804:431:d7xx::/40/8827699yes
2804:431:d7xx::/40/8027699yes
2804:431:d7xx::/40/7227699yes
2804:431:d7xx::/40/6427699yes
2804:431:d7xx::/40/5627699no
2804:431:d7xx::/40/4827699no
2804:431:d7xx::/40/4027699no
2804:431:57xx::/40/32UNROUTEDno
2804:4b1:d7xx::/40/24UNROUTEDno
2804:8431:d7xx::/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.
Last Modified