Session Report
Summary:
Test run at: 2017-08-07 11:44:53 GMT
Client Prefix (v4): 185.172.31.x/24
Client AS (v4): 203912 (SICRES-AS)
IPv4 Probes: 120
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
blocked |
| Routable |
blocked |
| Largest spoofable neighbor prefix length |
/26 |
| 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 (185.172.31.x/24) can spoof 63 neighboring addresses (within your /26 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 185.172.31.x/24 | /31 | 203912 | no |
| 185.172.31.x/24 | /30 | 203912 | no |
| 185.172.31.x/24 | /29 | 203912 | no |
| 185.172.31.x/24 | /28 | 203912 | yes |
| 185.172.31.x/24 | /27 | 203912 | no |
| 185.172.31.x/24 | /26 | 203912 | yes |
| 185.172.31.x/24 | /25 | 203912 | no |
| 185.172.31.x/24 | /24 | 203912 | no |
| 185.172.30.x/24 | /23 | 203912 | no |
| 185.172.29.x/24 | /22 | 203912 | no |
| 185.172.27.x/24 | /21 | 8240 | no |
| 185.172.23.x/24 | /20 | 20473 | no |
| 185.172.15.x/24 | /19 | UNROUTED | no |
| 185.172.63.x/24 | /18 | 60203 | no |
| 185.172.95.x/24 | /17 | UNROUTED | no |
| 185.172.159.x/24 | /16 | 61053 | no |
| 185.173.31.x/24 | /15 | 198252 | no |
| 185.174.31.x/24 | /14 | 51559 | no |
| 185.168.31.x/24 | /13 | 41856 | no |
| 185.164.31.x/24 | /12 | 207169 | no |
| 185.188.31.x/24 | /11 | UNROUTED | no |
| 185.140.31.x/24 | /10 | 49798 | no |
| 185.236.31.x/24 | /9 | UNROUTED | no |
| 185.44.31.x/24 | /8 | 199853 | 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
unable to spoof routable, non-adjacent source addresses through
even the first IP hop.
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.
