58 lines
2.0 KiB
Markdown
58 lines
2.0 KiB
Markdown
10GigE (Zippier) ZMap
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===========
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It is possible to build ZMap to run at 95% of 10 GigE linespeed, sending over 14
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million packets per second. This requires a compatible Intel 10 Gbps Ethernet
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NIC and Linux.
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### Prerequisites
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0. A working ZMap development environment (see [INSTALL.md](install.md))
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1. A [PF_RING ZC](http://www.ntop.org/products/pf_ring/pf_ring-zc-zero-copy/)
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license from ntop.
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2. PF_RING ZC headers and kernel module
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3. A 10 Gbps NIC with compatible "PF_RING-aware" drivers
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4. A Linux (not BSD or Mac) installation
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5. For best results, a computer with at least 8 *physical* cores on the same
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NUMA node.
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6. libnuma (`sudo apt-get install libnuma-dev`)
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### Building
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Most build errors are due to incorrectly building or installing PF_RING. Make
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sure you have build the drivers, the kernel module, and the userland library, as
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well as install the headers and kernel module to the correct locations.
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The PF_RING `make install` command might not copy `pfring_zc.h` to
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`/usr/include`, in which case manually install the file and set permissions
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correctly.
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To build navigate to the root of the repository and run:
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```
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$ cmake -DWITH_PFRING=ON -DENABLE_DEVELOPMENT=OFF .
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$ make
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```
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### Running
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You'll have to carefully select the number of threads to use, as well as specify
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as zero-copy interface, e.g. `zc:eth1`. Use the `--cores` option to pick which
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cores to pin to. Make sure to pin to different physical cores, and note that
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some machines interleave physical and "virtual" cores.
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```
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$ sudo ./src/zmap -p 80 -i zc:eth7 -o output.csv -T 5
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```
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### Considerations
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DO NOT TAKE THIS LIGHTLY!
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Running ZMap at 10Gbps hits every /16 on the Internet over 200 times a second.
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Even if you have a large source IP range to scan from, it's very obvious that
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you're scanning. As always, follow scanning best practices, honor blocklist
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requests, and signal benign/research intent via domain names and websites on
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your scan IPs.
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Remember, you're sending a lot of traffic.
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