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IPsec: Drop SHA1 and MODP<=1536 from proposed ciphers

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IPsec is still proposing to use SHA1 and MODP-1536 or MODP-1024
when initiating a connection. These are considered weak although
many off-the-shelf hardware is still using this as defaults.

This patch disables those algorithms and additionally changes
default behaviour to only accept the configured cipher suites.

This might create some interoperability issues, but increases
security of IPFire-to-IPFire IPsec connections.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
This commit is contained in:
Michael Tremer
2017-04-05 11:42:55 +01:00
parent 4f6790a7e4
commit 570d54fd84
1 changed files with 5 additions and 5 deletions
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10
html/cgi-bin/vpnmain.cgi
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@@ -1897,15 +1897,15 @@ END
#use default advanced value
$cgiparams{'IKE_ENCRYPTION'} = 'aes256gcm128|aes256gcm96|aes256gcm64|aes256|aes192gcm128|aes192gcm96|aes192gcm64|aes192|aes128gcm128|aes128gcm96|aes128gcm64|aes128'; #[18];
$cgiparams{'IKE_INTEGRITY'} = 'sha2_512|sha2_256|sha'; #[19];
$cgiparams{'IKE_GROUPTYPE'} = '4096|3072|2048|1536|1024'; #[20];
$cgiparams{'IKE_INTEGRITY'} = 'sha2_512|sha2_256'; #[19];
$cgiparams{'IKE_GROUPTYPE'} = '4096|3072|2048'; #[20];
$cgiparams{'IKE_LIFETIME'} = '3'; #[16];
$cgiparams{'ESP_ENCRYPTION'} = 'aes256gcm128|aes256gcm96|aes256gcm64|aes256|aes192gcm128|aes192gcm96|aes192gcm64|aes192|aes128gcm128|aes128gcm96|aes128gcm64|aes128'; #[21];
$cgiparams{'ESP_INTEGRITY'} = 'sha2_512|sha2_256|sha1'; #[22];
$cgiparams{'ESP_GROUPTYPE'} = '4096|3072|2048|1536|1024'; #[23];
$cgiparams{'ESP_INTEGRITY'} = 'sha2_512|sha2_256'; #[22];
$cgiparams{'ESP_GROUPTYPE'} = '4096|3072|2048'; #[23];
$cgiparams{'ESP_KEYLIFE'} = '1'; #[17];
$cgiparams{'COMPRESSION'} = 'on'; #[13];
$cgiparams{'ONLY_PROPOSED'} = 'off'; #[24];
$cgiparams{'ONLY_PROPOSED'} = 'on'; #[24];
$cgiparams{'PFS'} = 'on'; #[28];
}