Session Report
Summary:
Test run at: 2020-07-11 20:02:34 GMT
Client Prefix (v4): 213.108.4.x/24
Client AS (v4): 48347 (MTW-AS)
IPv4 Probes: 75
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
blocked |
| Routable |
blocked |
| Largest spoofable neighbor prefix length |
none |
| 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 (213.108.4.x/24) can spoof 0 neighboring addresses
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 213.108.4.x/24 | /31 | 48347 | no |
| 213.108.4.x/24 | /30 | 48347 | no |
| 213.108.4.x/24 | /29 | 48347 | no |
| 213.108.4.x/24 | /28 | 48347 | no |
| 213.108.4.x/24 | /27 | 48347 | no |
| 213.108.4.x/24 | /26 | 48347 | no |
| 213.108.4.x/24 | /25 | 48347 | no |
| 213.108.4.x/24 | /24 | 48347 | no |
| 213.108.5.x/24 | /23 | 205063 | no |
| 213.108.6.x/24 | /22 | 61223 | no |
| 213.108.0.x/24 | /21 | 36352 | no |
| 213.108.12.x/24 | /20 | 49300 | no |
| 213.108.20.x/24 | /19 | 49342 | no |
| 213.108.36.x/24 | /18 | 31376 | no |
| 213.108.68.x/24 | /17 | 16347 | no |
| 213.108.132.x/24 | /16 | UNROUTED | no |
| 213.109.4.x/24 | /15 | 50498 | no |
| 213.110.4.x/24 | /14 | 49483 | no |
| 213.104.4.x/24 | /13 | 5089 | no |
| 213.100.4.x/24 | /12 | 1257 | no |
| 213.124.4.x/24 | /11 | 33915 | no |
| 213.76.4.x/24 | /10 | 5617 | no |
| 213.44.4.x/24 | /9 | 5410 | no |
| 213.236.4.x/24 | /8 | 12924 | no |
Meaning of status in Received column:
| no | Packets spoofed from adjacent netblock were not received, probably due to blocking |
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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Users Mailing List for discussion and announcements.
