Session Report
Summary:
Test run at: 2019-08-02 06:41:01 GMT
Client Prefix (v4): 2.56.240.x/24
Client AS (v4): 49392 (ASBAXETN)
IPv4 Probes: 99
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
blocked |
| Routable |
blocked |
| Largest spoofable neighbor prefix length |
/23 |
| 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. |
IPv4 Adjacent Netblock Testing:
Your host (2.56.240.x/24) can spoof 511 neighboring addresses (within your /23 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 2.56.240.x/24 | /31 | 49392 | yes |
| 2.56.240.x/24 | /30 | 49392 | yes |
| 2.56.240.x/24 | /29 | 49392 | yes |
| 2.56.240.x/24 | /28 | 49392 | yes |
| 2.56.240.x/24 | /27 | 49392 | yes |
| 2.56.240.x/24 | /26 | 49392 | yes |
| 2.56.240.x/24 | /25 | 49392 | yes |
| 2.56.240.x/24 | /24 | 49392 | yes |
| 2.56.241.x/24 | /23 | 49392 | yes |
| 2.56.242.x/24 | /22 | 49392 | no |
| 2.56.244.x/24 | /21 | 206638 | no |
| 2.56.248.x/24 | /20 | 395800 | no |
| 2.56.224.x/24 | /19 | UNROUTED | no |
| 2.56.208.x/24 | /18 | 39560 | no |
| 2.56.176.x/24 | /17 | 35913 | no |
| 2.56.112.x/24 | /16 | 12722 | no |
| 2.57.240.x/24 | /15 | 55933 | no |
| 2.58.240.x/24 | /14 | UNROUTED | no |
| 2.60.240.x/24 | /13 | 12389 | no |
| 2.48.240.x/24 | /12 | 5384 | no |
| 2.40.240.x/24 | /11 | 30722 | no |
| 2.24.240.x/24 | /10 | 12576 | no |
| 2.120.240.x/24 | /9 | 5607 | no |
| 2.184.240.x/24 | /8 | 58224 | 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) |
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).
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
Feedback:
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and invite users to join the Spoofer
Users Mailing List for discussion and announcements.
