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3b164749d3
As OpenSSH 8.8 disables RSA signatures using the SHA-1 hash algorithm by default some older SSH clients might not be able to connect to OPNsense anymore. Therefore, it might be needed to manually modify the PubkeyAcceptedAlgorithms sshd config option. Prevent generating of invalid configuration values for dynamic crypto parameters (KexAlgorithms, Ciphers, MACs, HostKeyAlgorithms and PubkeyAcceptedAlgorithms).
44 lines
1.8 KiB
Python
Executable File
44 lines
1.8 KiB
Python
Executable File
#!/usr/local/bin/python3
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"""
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Copyright (c) 2020 Ad Schellevis <ad@opnsense.org>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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"""
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import subprocess
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import ujson
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import argparse
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if __name__ == '__main__':
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parser = argparse.ArgumentParser()
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parser.add_argument('option', help='query option', choices=['kex', 'mac', 'cipher' ,'key', 'key-sig'])
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args = parser.parse_args()
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result = list()
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for l in subprocess.run(['/usr/local/bin/ssh', '-Q', args.option], capture_output=True).stdout.decode().split('\n'):
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if len(l.strip()) > 1:
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result.append(l.strip())
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sorted(result)
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print(ujson.dumps(result))
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