diff options
| author | Lennart Poettering <lennart@poettering.net> | 2016-02-15 18:40:02 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2016-02-16 15:22:05 +0100 |
| commit | 61ecb465b1c803316cb55bae0c2d7cf3c0008589 (patch) | |
| tree | 4ff4d283b4a55458a2107b8484cbbfd991c8d523 /configure.ac | |
| parent | 6043679c6ec485a96926f07c26d77f2c0c246fe2 (diff) | |
resolved: turn on DNSSEC by default, unless configured otherwise
Let's make sure DNSSEC gets more testing, by defaulting DNSSEC to
"allow-downgrade" mode. Since distros should probably not ship DNSSEC enabled
by default add a configure switch to disable this again.
DNSSEC in "allow-downgrade" mode should mostly work without affecting user
experience. There's one exception: some captive portal systems rewrite DNS in
order to redirect HTTP traffic to the captive portal. If these systems
implement DNS servers that are otherwise DNSSEC-capable (which in fact is
pretty unlikely, but still...), then this will result in the captive portal
being inaccessible. To fix this support in NetworkManager (or any other network
management solution that does captive portal detection) is required, which
simply turns off DNSSEC during the captive portal detection, and resets it back
to the default (i.e. on) after captive portal authentication is complete.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/configure.ac b/configure.ac index 262f9e4fff..e72470a199 100644 --- a/configure.ac +++ b/configure.ac @@ -1128,6 +1128,20 @@ AC_ARG_WITH(dns-servers, AC_DEFINE_UNQUOTED(DNS_SERVERS, ["$DNS_SERVERS"], [Default DNS Servers]) AC_SUBST(DNS_SERVERS) +AC_ARG_WITH(default-dnssec, + AS_HELP_STRING([--with-default-dnssec=MODE], + [Default DNSSEC mode, defaults to "allow-downgrade"]), + [DEFAULT_DNSSEC_MODE="$withval"], + [DEFAULT_DNSSEC_MODE="allow-downgrade"]) + +AS_CASE("x${DEFAULT_DNSSEC_MODE}", + [xno], [mode=DNSSEC_NO], + [xyes], [mode=DNSSEC_YES], + [xallow-downgrade], [mode=DNSSEC_ALLOW_DOWNGRADE], + AC_MSG_ERROR(Bad DNSSEC mode ${DEFAULT_DNSSEC_MODE})) +AC_DEFINE_UNQUOTED(DEFAULT_DNSSEC_MODE, [$mode], [Default DNSSEC mode]) +AC_SUBST(DEFAULT_DNSSEC_MODE) + # ------------------------------------------------------------------------------ have_networkd=no AC_ARG_ENABLE(networkd, AS_HELP_STRING([--disable-networkd], [disable networkd])) @@ -1559,12 +1573,13 @@ AC_MSG_RESULT([ hostnamed: ${have_hostnamed} timedated: ${have_timedated} timesyncd: ${have_timesyncd} - default NTP servers: ${NTP_SERVERS} + Default NTP servers: ${NTP_SERVERS} time epoch: ${TIME_EPOCH} localed: ${have_localed} networkd: ${have_networkd} resolved: ${have_resolved} - default DNS servers: ${DNS_SERVERS} + Default DNS servers: ${DNS_SERVERS} + Default DNSSEC mode: ${DEFAULT_DNSSEC_MODE} coredump: ${have_coredump} polkit: ${have_polkit} efi: ${have_efi} |