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Session Report

Summary:
Test run at: 2022-05-23 08:28:37 GMT
Client Prefix (v4): 188.18.224.x/24
Client AS (v4): 12389 (ROSTELECOM-AS)
IPv4 Probes: 60
Client Prefix (v6): 2a01:540:43xx::/40
Client AS (v6): 12389 (ROSTELECOM-AS)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA rewrittenreceived
Routable receivedreceived
Largest spoofable neighbor prefix length none/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.

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


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
188.18.224.x/24/3112389rewritten
188.18.224.x/24/3012389rewritten
188.18.224.x/24/2912389rewritten
188.18.224.x/24/2812389rewritten
188.18.224.x/24/2712389rewritten
188.18.224.x/24/2612389rewritten
188.18.224.x/24/2512389rewritten
188.18.224.x/24/2412389rewritten
188.18.225.x/24/2312389rewritten
188.18.226.x/24/2212389rewritten
188.18.228.x/24/2112389rewritten
188.18.232.x/24/2012389rewritten
188.18.240.x/24/1912389rewritten
188.18.192.x/24/1812389rewritten
188.18.160.x/24/1712389rewritten
188.18.96.x/24/1612389rewritten
188.19.224.x/24/1512389rewritten
188.16.224.x/24/1412389rewritten
188.22.224.x/24/138447rewritten
188.26.224.x/24/128708rewritten
188.2.224.x/24/1131042rewritten
188.50.224.x/24/1025019rewritten
188.82.224.x/24/93243rewritten
188.146.224.x/24/812912rewritten

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 10 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::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::1592001:610:510:115:192:42:115:98yes
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
2a01:540:43xx::/40/12012389yes
2a01:540:43xx::/40/11212389yes
2a01:540:43xx::/40/10412389yes
2a01:540:43xx::/40/9612389yes
2a01:540:43xx::/40/8812389yes
2a01:540:43xx::/40/8012389yes
2a01:540:43xx::/40/7212389yes
2a01:540:43xx::/40/6412389yes
2a01:540:43xx::/40/5612389yes
2a01:540:43xx::/40/4812389yes
2a01:540:43xx::/40/4012389yes
2a01:540:c3xx::/40/3212389yes
2a01:5c0:43xx::/40/2442652yes
2a01:8540:43xx::/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.
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