37 lines
1.5 KiB
Plaintext
37 lines
1.5 KiB
Plaintext
TCP banner grabber implemented in Go (experimental)
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======
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This program will make TCP connections to IP addresses provided on
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stdin, optionally send a short message, and wait for responses. Each
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response is printed to stdout, along with the responding host's IP
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address. Status messages appear on stderr.
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USING:
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-----
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go build banner.go
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zmap -p 80 -N 1000 -o - | ./banner -port 80 -concurrent 100 -data http-req > banners.out
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OPTIONS:
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-----
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-concurrent Number of connections that can be going on at once.
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This, combined with timeouts, will decide the maximum
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rate at which banners are grabbed. If this value
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is set higher than 1000, you should use
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`ulimit -SHn 1000000` and `ulimit -SSn 1000000` to
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avoid running out of file descriptors (typically capped
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at 1024). Default: 100.
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-port The port which to connect to hosts on. Default: 80.
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-timeout Connection timeout (seconds). Give up on a host if grabber
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has not completed by this time. Default: 4 seconds.
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-format Format to output banner responses. One of 'hex', 'ascii',
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or 'base64'. Default: ascii.
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-data Optional data file. This data will be sent to each host
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upon successful connection. Occurrences of the
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string '%s' will be replaced with the current
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target host's address.
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