This file is indexed.

/etc/proftpd/dhparams.pem is in proftpd-basic 1.3.5-1.1+deb8u2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# This file contains a number of pregenerated Diffie-Hellman group parameters,
# ranging in size from 1024 to 8192 bits.  These are intended for use during
# the Diffie-Hellman group exchange protocol, part of the SSH key exchange
# (see RFC4419).
#
# The file was generated using the following OpenSSL command:
#
#   openssl dhparam -outform PEM -2|-5 1024|1536|2048|3072|4096|6144|7680|8192 >> dhparams.pem
#
# Note that these DH parameters should be refreshed every so often (e.g.
# every few years).  These parameters were last updated on 2013-01-14.

# 1024-bit DH group params
-----BEGIN DH PARAMETERS-----
MIGHAoGBALbvOMiSzkUDxrpE0v150A1+hi9R0xSbwk2nyGBHznfZtvi3prJWIZwS
5WPTZI9QCUCGIfGt8xfVrzzzfmruEFUZK9Tz27mR+7dPiet3c51niPIOrBlUCeTB
Kz/urIJMeUcoUcDSbIeajAyLfwkWvLP44i/n7fDW9rsuzef6Eq+bAgEC
-----END DH PARAMETERS-----
-----BEGIN DH PARAMETERS-----
MIGHAoGBAM5hpw0SGB0LHC0hN3Cp2rwnRPQtgvywaj1Ju3odzswLaxYriqQODBCH
psywSpi5WAU2R/WUITW5VWLHlI7HpCJwNXG9s9GmHTelCGvBEd/c63jJlL6VjyOe
M2OW+RDONoNFTXXVMmPayuUq3vfWFPGcSRZg5CI+d4Xma4eRPRxbAgEF
-----END DH PARAMETERS-----
-----BEGIN DH PARAMETERS-----
MIGHAoGBAKP/HXSZf3Pbpczrl3tvL9L5g+vWsoBQWFA0PglX/RUV7wd/hgiRdcJG
MXktBIkBDxtdKZM5JKu8d99e5Lmbw6puluLF1lA8ZJ/lcIhojnDWQZ8bFBXx2DJ9
DpDMMX/htR8u+cnPxeKDw2gnKjuN39Ku+1IdBLYSl9iu4GEwk9rDAgEC
-----END DH PARAMETERS-----
-----BEGIN DH PARAMETERS-----
MIGHAoGBAMLOI4dbum16dz3CVufbtZ/90kC92QElRU2yfEwQdxsufkcYd+uEPgfx
vD0PCMdCl2zAHfMjMtGCrb+8pTiO2eaC/4/wd6z0LUciawZo/dSE3n7S+D51ZH1I
IN1OyvIhMMBq+DyujB6t9jUlrpXriXdcvmv78R83uT6TwwhFtRXnAgEF
-----END DH PARAMETERS-----
-----BEGIN DH PARAMETERS-----
MIGHAoGBAO7i+5IQHjs6tHh5LXAwvD3XXgxyE6j7e1KWmgHDFg6GeEo2UZLu07Zt
Ynu9srvka3KsnzdDEqtQgZk9C1aRMpqYoy0DFptVHNFjyhydIwB23Eh5a5xmpCzg
X4yDC+2ADrU2PC0M+T8FuAOWvd3VBBrnm3msoRBRy26IKBAeDi5jAgEC
-----END DH PARAMETERS-----
-----BEGIN DH PARAMETERS-----
MIGHAoGBAIBl4JEof+IcUS/j+PnkmeYNLUtGwi/PrQ4xv5Q3V0aiy/qIOX8yYFIA
gwBidaoqPkG0CAAYO9o8gvFhHfJHd8B296mYybSHSGI2G6TVP3xdZYNmqG1lAqd/
Vqmj+CvmkYsgacDVD6P8yOLrF6gzBb9PxVNOFqPhNX/0yOXBr6YTAgEF
-----END DH PARAMETERS-----

# 1536-bit DH group params
-----BEGIN DH PARAMETERS-----
MIHHAoHBAJkp+TbtcuMfeImd5XIA7pKwGjtrcVtNpRXB4wlRbpJpbGGQcyCe65MJ
Kmxs8sndPv1S19fTH+3Fcp9jl7JmChHs+TcWqIpvmrBFRZ/5N2bf2fgimi7hSWWF
JwFdb9zpxUNWbAcNnR/jZdqQ61wweyUT0sfGPH+0xNRbtc1Ct1E95o4+7Os82Lh1
TKokivVwwBf9m2vmCFEXDTgW0bLLqNRH1CQ8juEiw6i/zabmkutPPhKN0uxA7j75
+eMc/DVzlwIBBQ==
-----END DH PARAMETERS-----
-----BEGIN DH PARAMETERS-----
MIHHAoHBAKhfKa4EANC76yzSGF+/8UKQnSzjhMDyqOmWlrvb66CTe4T6gTtpECkm
8KDmxuN3HrlXgkEQoMh4rgazpx3UG0z8T6aqQXFZmAVMK/Yp++9H/EzJhTyntJ31
hz3QqkoZgznvKx2vF+Gmx7C4imd+EIi7b/Lz/yw1P3wIGt1t3rznudc46BfPbRMf
7sEQ20na5PEY5XwX3V9u2X61HM4YGto9XuNVL3uU70bxW6pceFBzdzVEadnXaJyW
00bevXWw2wIBAg==
-----END DH PARAMETERS-----
-----BEGIN DH PARAMETERS-----
MIHHAoHBANdeoQj9jcGLATPLTqI4vpKMgqJ5fuOe+8yiVVTmDGuNzDL7lDj5JMSF
lrpG99IPVb6Cy+kSAyO/PBbTkj9nPzls42GKmABjb3PHYiDIBcYq4xfP7Z/PEH9J
YIT/9PQVqVRFPHnzdZcXtaS3H6ve6npiwvgwPCNz7s7MX9C153XF99T0qCA8L/a+
KsnKD2aaqsxi/6Njr7sBly9l6qre70lONzeOLzcwQSRq9l2pjSMEekJPY6E3yPPy
MA4GLMlaKwIBAg==
-----END DH PARAMETERS-----

# 2048-bit DH group params
-----BEGIN DH PARAMETERS-----
MIIBCAKCAQEA6Y/KjtYFfcVooSk1p2pvVbqttLQNsMIC5t9GSyWlfCBoFPqffXsm
XVkXuy3k8zAjrdL3rGx5/+c5wlYfVAzz/q3rUR+mFEPQKgkvHKUFy0ubG0Wp/dBI
KZ+vkK+CK0NToKAdXv8G3TfCefw9dI/Nzy2j/wxlUFapFwnZocPXUlgQd52mdCsX
ACqZ5imBZcNQzwcEKTr2jen2l+NE2CKs8nJFVwcSlsFPqEB+7Yh1GwZik1wmBxrT
PwPMrTk1u9CqttF7aTZBHjn++e4TkqrQs1J04s0LjdvzNVaEcUfPPiTH+68KpMwj
NcAuMC6BV3L42Cald1HocD18s07VPcqiUwIBAg==
-----END DH PARAMETERS-----
-----BEGIN DH PARAMETERS-----
MIIBCAKCAQEAo+GoaemZ9KjBgLgwGZuObOQ/hQSoK1Aka/fPoSk3ECokqb0KeeI4
Ai8YVup6WIJigf//UTZFgHXENUsJM3sSTKHe5l7LtQIkb2oPQFfzTpp2OOMceRkK
eXpgDYBct0T0KDAJXV4uB+l6PZfL4cOLfSMNCKTg2ptGGLbbqYPLd7LNwudpe1wO
0KB1GFEkB2ZEPTIkQx2W1ia5EHta5zlXRqa962Rbo1t5fdiM3whVTqlgKNNC5/zv
wH7vHqyJyqVOKQyjXPsT95iBTo1GsXRz8oLXchrTybs7yfilve1eTCnQKfiZHqKw
50XSRbAiSV8ephW8mbwCOLthruMKT7GDTwIBBQ==
-----END DH PARAMETERS-----

# 3072-bit DH group params
-----BEGIN DH PARAMETERS-----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-----END DH PARAMETERS-----

# 4096-bit DH group params
-----BEGIN DH PARAMETERS-----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-----END DH PARAMETERS-----

# 6144-bit DH group params
-----BEGIN DH PARAMETERS-----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-----END DH PARAMETERS-----

# 7680-bit DH group params
-----BEGIN DH PARAMETERS-----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-----END DH PARAMETERS-----

# 8192-bit DH group params
-----BEGIN DH PARAMETERS-----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-----END DH PARAMETERS-----