Session Report

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| Data: Stats Summary Recent Tests Remediation Results by AS Results by Country Results by Provider |

Summary:

Test run at: 2024-06-17 05:09:06 GMT
Client Prefix (v4): 223.160.114.x/24
Client AS (v4): 56047 (CMNET-Hunan-AP)
IPv4 Probes: 69
Client Prefix (v6): 240a:42c3:60xx::/40
Client AS (v6): 56047 (CMNET-Hunan-AP)
IPv6 Probes: 64

Outbound spoofing summary (from the client to our server)

Source address type IPv4 IPv6

Private - RFC1918 or ULA rewritten blocked

Routable rewritten blocked

Largest spoofable neighbor prefix length /23 /64

Spoof status key
received Spoofed packet was received. ✔ Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewritten Spoofed packet was received, but the source address was changed en route.
blocked Spoofed packet was not received, but unspoofed packet was.
unknown Neither spoofed nor unspoofed packet was received.

Outbound spoofing summary (from the client to our server)
Source address type	IPv4	IPv6
Private - RFC1918 or ULA	rewritten	blocked
Routable	rewritten	blocked
Largest spoofable neighbor prefix length	/23	/64

Spoof status key
received	Spoofed packet was received.	✔	Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it.
rewritten	Spoofed packet was received, but the source address was changed en route.
blocked	Spoofed packet was not received, but unspoofed packet was.
unknown	Neither spoofed nor unspoofed packet was received.

Warnings:

⚠️ Your host is behind a Network Address Translation (NAT) router or firewall which rewrites the source addresses of the test traffic. To test your provider's network further, you must remove the NAT/firewall/router and connect directly.

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 (223.160.114.x/24) can spoof 511 neighboring addresses (within your /23 prefix)

Spoofed source address (anon) Prefix
Length ASN of spoofed
source address Received

223.160.114.x/24 /31 56047 rewritten

223.160.114.x/24 /30 56047 rewritten

223.160.114.x/24 /29 56047 rewritten

223.160.114.x/24 /28 56047 rewritten

223.160.114.x/24 /27 56047 rewritten

223.160.114.x/24 /26 56047 rewritten

223.160.114.x/24 /25 56047 rewritten

223.160.114.x/24 /24 56047 rewritten

223.160.115.x/24 /23 56047 yes

223.160.112.x/24 /22 56047 rewritten

223.160.118.x/24 /21 9808 rewritten

223.160.122.x/24 /20 24445 rewritten

223.160.98.x/24 /19 UNROUTED rewritten

223.160.82.x/24 /18 UNROUTED rewritten

223.160.50.x/24 /17 UNROUTED rewritten

223.160.242.x/24 /16 UNROUTED rewritten

223.161.114.x/24 /15 UNROUTED rewritten

223.162.114.x/24 /14 UNROUTED rewritten

223.164.114.x/24 /13 UNROUTED rewritten

223.168.114.x/24 /12 UNROUTED rewritten

223.176.114.x/24 /11 45609 rewritten

223.128.114.x/24 /10 4538 rewritten

223.224.114.x/24 /9 9498 rewritten

223.32.114.x/24 /8 9644 rewritten

Meaning of status in Received column:

yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)
rewritten The source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
223.160.114.x/24	/31	56047	rewritten
223.160.114.x/24	/30	56047	rewritten
223.160.114.x/24	/29	56047	rewritten
223.160.114.x/24	/28	56047	rewritten
223.160.114.x/24	/27	56047	rewritten
223.160.114.x/24	/26	56047	rewritten
223.160.114.x/24	/25	56047	rewritten
223.160.114.x/24	/24	56047	rewritten
223.160.115.x/24	/23	56047	yes
223.160.112.x/24	/22	56047	rewritten
223.160.118.x/24	/21	9808	rewritten
223.160.122.x/24	/20	24445	rewritten
223.160.98.x/24	/19	UNROUTED	rewritten
223.160.82.x/24	/18	UNROUTED	rewritten
223.160.50.x/24	/17	UNROUTED	rewritten
223.160.242.x/24	/16	UNROUTED	rewritten
223.161.114.x/24	/15	UNROUTED	rewritten
223.162.114.x/24	/14	UNROUTED	rewritten
223.164.114.x/24	/13	UNROUTED	rewritten
223.168.114.x/24	/12	UNROUTED	rewritten
223.176.114.x/24	/11	45609	rewritten
223.128.114.x/24	/10	4538	rewritten
223.224.114.x/24	/9	9498	rewritten
223.32.114.x/24	/8	9644	rewritten

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 address Destination Received
2001:48d0:101:501::159 2001:200:e000:2:225:90ff:fe0c:4684 no
2001:4978:1fb:6400::d2 2001:200:e000:2:225:90ff:fe0c:4684 no
2001:49aa:111:aa00::11 2001:200:e000:2:225:90ff:fe0c:4684 no
fd11:1111:1111::1111 2001:200:e000:2:225:90ff:fe0c:4684 no
2001:48d0:101:501::159 2001:48d0:101:501::242 no
2001:4978:1fb:6400::d2 2001:48d0:101:501::242 no
2001:49aa:111:aa00::11 2001:48d0:101:501::242 no
fd11:1111:1111::1111 2001:48d0:101:501::242 no
2001:48d0:101:501::159 2001:48d0:101:501::247 no
2001:4978:1fb:6400::d2 2001:48d0:101:501::247 no
2001:49aa:111:aa00::11 2001:48d0:101:501::247 no
fd11:1111:1111::1111 2001:48d0:101:501::247 no
2001:48d0:101:501::159 2001:610:510:115:192:42:115:98 no
2001:4978:1fb:6400::d2 2001:610:510:115:192:42:115:98 no
2001:49aa:111:aa00::11 2001:610:510:115:192:42:115:98 no
fd11:1111:1111::1111 2001:610:510:115:192:42:115:98 no
2001:48d0:101:501::159 2001:630:212:225:225:90ff:fe0c:45a6 no
2001:4978:1fb:6400::d2 2001:630:212:225:225:90ff:fe0c:45a6 no
2001:49aa:111:aa00::11 2001:630:212:225:225:90ff:fe0c:45a6 no
fd11:1111:1111::1111 2001:630:212:225:225:90ff:fe0c:45a6 no
2001:48d0:101:501::159 2001:638:902:2000:ba27:ebff:fe86:2c51 no
2001:4978:1fb:6400::d2 2001:638:902:2000:ba27:ebff:fe86:2c51 no
2001:49aa:111:aa00::11 2001:638:902:2000:ba27:ebff:fe86:2c51 no
fd11:1111:1111::1111 2001:638:902:2000:ba27:ebff:fe86:2c51 no
2001:48d0:101:501::159 2001:770:1c:7:225:90ff:fe0c:acb4 no
2001:4978:1fb:6400::d2 2001:770:1c:7:225:90ff:fe0c:acb4 no
2001:49aa:111:aa00::11 2001:770:1c:7:225:90ff:fe0c:acb4 no
fd11:1111:1111::1111 2001:770:1c:7:225:90ff:fe0c:acb4 no
2001:48d0:101:501::159 2607:8400:2880:4::80df:9d0d no
2001:4978:1fb:6400::d2 2607:8400:2880:4::80df:9d0d no
2001:49aa:111:aa00::11 2607:8400:2880:4::80df:9d0d no
fd11:1111:1111::1111 2607:8400:2880:4::80df:9d0d no
2001:48d0:101:501::159 2607:f278:2:13:da3a:ddff:fe30:ce14 no
2001:4978:1fb:6400::d2 2607:f278:2:13:da3a:ddff:fe30:ce14 no
2001:49aa:111:aa00::11 2607:f278:2:13:da3a:ddff:fe30:ce14 no
fd11:1111:1111::1111 2607:f278:2:13:da3a:ddff:fe30:ce14 no

Spoofed source address	Destination	Received
2001:48d0:101:501::159	2001:200:e000:2:225:90ff:fe0c:4684	no
2001:4978:1fb:6400::d2	2001:200:e000:2:225:90ff:fe0c:4684	no
2001:49aa:111:aa00::11	2001:200:e000:2:225:90ff:fe0c:4684	no
fd11:1111:1111::1111	2001:200:e000:2:225:90ff:fe0c:4684	no
2001:48d0:101:501::159	2001:48d0:101:501::242	no
2001:4978:1fb:6400::d2	2001:48d0:101:501::242	no
2001:49aa:111:aa00::11	2001:48d0:101:501::242	no
fd11:1111:1111::1111	2001:48d0:101:501::242	no
2001:48d0:101:501::159	2001:48d0:101:501::247	no
2001:4978:1fb:6400::d2	2001:48d0:101:501::247	no
2001:49aa:111:aa00::11	2001:48d0:101:501::247	no
fd11:1111:1111::1111	2001:48d0:101:501::247	no
2001:48d0:101:501::159	2001:610:510:115:192:42:115:98	no
2001:4978:1fb:6400::d2	2001:610:510:115:192:42:115:98	no
2001:49aa:111:aa00::11	2001:610:510:115:192:42:115:98	no
fd11:1111:1111::1111	2001:610:510:115:192:42:115:98	no
2001:48d0:101:501::159	2001:630:212:225:225:90ff:fe0c:45a6	no
2001:4978:1fb:6400::d2	2001:630:212:225:225:90ff:fe0c:45a6	no
2001:49aa:111:aa00::11	2001:630:212:225:225:90ff:fe0c:45a6	no
fd11:1111:1111::1111	2001:630:212:225:225:90ff:fe0c:45a6	no
2001:48d0:101:501::159	2001:638:902:2000:ba27:ebff:fe86:2c51	no
2001:4978:1fb:6400::d2	2001:638:902:2000:ba27:ebff:fe86:2c51	no
2001:49aa:111:aa00::11	2001:638:902:2000:ba27:ebff:fe86:2c51	no
fd11:1111:1111::1111	2001:638:902:2000:ba27:ebff:fe86:2c51	no
2001:48d0:101:501::159	2001:770:1c:7:225:90ff:fe0c:acb4	no
2001:4978:1fb:6400::d2	2001:770:1c:7:225:90ff:fe0c:acb4	no
2001:49aa:111:aa00::11	2001:770:1c:7:225:90ff:fe0c:acb4	no
fd11:1111:1111::1111	2001:770:1c:7:225:90ff:fe0c:acb4	no
2001:48d0:101:501::159	2607:8400:2880:4::80df:9d0d	no
2001:4978:1fb:6400::d2	2607:8400:2880:4::80df:9d0d	no
2001:49aa:111:aa00::11	2607:8400:2880:4::80df:9d0d	no
fd11:1111:1111::1111	2607:8400:2880:4::80df:9d0d	no
2001:48d0:101:501::159	2607:f278:2:13:da3a:ddff:fe30:ce14	no
2001:4978:1fb:6400::d2	2607:f278:2:13:da3a:ddff:fe30:ce14	no
2001:49aa:111:aa00::11	2607:f278:2:13:da3a:ddff:fe30:ce14	no
fd11:1111:1111::1111	2607:f278:2:13:da3a:ddff:fe30:ce14	no

IPv6 Adjacent Netblock Testing:

Spoofed source address (anon) Prefix
Length ASN of spoofed
source address Received

240a:42c3:60xx::/40 /120 56047 yes

240a:42c3:60xx::/40 /112 56047 yes

240a:42c3:60xx::/40 /104 56047 yes

240a:42c3:60xx::/40 /96 56047 yes

240a:42c3:60xx::/40 /88 56047 yes

240a:42c3:60xx::/40 /80 56047 yes

240a:42c3:60xx::/40 /72 56047 yes

240a:42c3:60xx::/40 /64 56047 yes

240a:42c3:60xx::/40 /56 56047 no

240a:42c3:60xx::/40 /48 56047 no

240a:42c3:60xx::/40 /40 56047 no

240a:42c3:e0xx::/40 /32 56047 no

240a:4243:60xx::/40 /24 63621 no

240a:c2c3:60xx::/40 /16 137726 no

Meaning of status in Received column:

no Packets spoofed from adjacent netblock were not received, probably due to blocking
yes Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)

Spoofed source address (anon)	Prefix Length	ASN of spoofed source address	Received
240a:42c3:60xx::/40	/120	56047	yes
240a:42c3:60xx::/40	/112	56047	yes
240a:42c3:60xx::/40	/104	56047	yes
240a:42c3:60xx::/40	/96	56047	yes
240a:42c3:60xx::/40	/88	56047	yes
240a:42c3:60xx::/40	/80	56047	yes
240a:42c3:60xx::/40	/72	56047	yes
240a:42c3:60xx::/40	/64	56047	yes
240a:42c3:60xx::/40	/56	56047	no
240a:42c3:60xx::/40	/48	56047	no
240a:42c3:60xx::/40	/40	56047	no
240a:42c3:e0xx::/40	/32	56047	no
240a:4243:60xx::/40	/24	63621	no
240a:c2c3:60xx::/40	/16	137726	no

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.

yes	Packets spoofed from adjacent netblock were received (but that netblock is within the source AS)
rewritten	The source address of the probe packets we received differs from the spoofed address. It appears that an intermediate device is rewriting your packet headers.