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Session Report

Summary:
Test run at: 2023-09-10 14:18:33 GMT
Client Prefix (v4): 27.58.25.x/24
Client AS (v4): 24560 (AIRTELBROADBAND-AS-AP)
IPv4 Probes: 63
Client Prefix (v6): 2401:4900:1cxx::/40
Client AS (v6): 24560 (AIRTELBROADBAND-AS-AP)
IPv6 Probes: 56
Outbound spoofing summary (from the client to our server)
Source address type IPv4IPv6
Private - RFC1918 or ULA blockedblocked
Routable receivedblocked
Largest spoofable neighbor prefix length /8/64
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 (27.58.25.x/24) can spoof 16777215 neighboring addresses (within your /8 prefix)


Spoofed source address (anon)Prefix
Length
ASN of spoofed
source address
Received
27.58.25.x/24/3124560yes
27.58.25.x/24/3024560yes
27.58.25.x/24/2924560yes
27.58.25.x/24/2824560yes
27.58.25.x/24/2724560yes
27.58.25.x/24/2624560yes
27.58.25.x/24/2524560yes
27.58.25.x/24/2424560yes
27.58.24.x/24/2324560yes
27.58.27.x/24/2224560yes
27.58.29.x/24/2124560yes
27.58.17.x/24/2024560yes
27.58.9.x/24/1924560yes
27.58.57.x/24/1824560yes
27.58.89.x/24/1724560yes
27.58.153.x/24/1624560yes
27.59.25.x/24/1545609yes
27.56.25.x/24/1445609yes
27.62.25.x/24/1345609yes
27.50.25.x/24/12131111yes
27.42.25.x/24/1117816yes
27.26.25.x/24/104134yes
27.122.25.x/24/955792yes
27.186.25.x/24/8140903yes

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)

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::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
2401:4900:1cxx::/40/12024560yes
2401:4900:1cxx::/40/11224560yes
2401:4900:1cxx::/40/10424560yes
2401:4900:1cxx::/40/9624560yes
2401:4900:1cxx::/40/8824560yes
2401:4900:1cxx::/40/8024560yes
2401:4900:1cxx::/40/7224560yes
2401:4900:1cxx::/40/6424560yes
2401:4900:1cxx::/40/5624560no
2401:4900:1cxx::/40/4824560no
2401:4900:1cxx::/40/40UNROUTEDno
2401:4900:9cxx::/40/32UNROUTEDno
2401:4980:1cxx::/40/24UNROUTEDno
2401:c900:1cxx::/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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