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authorLennart Poettering <lennart@poettering.net>2016-02-15 18:40:02 +0100
committerLennart Poettering <lennart@poettering.net>2016-02-16 15:22:05 +0100
commit61ecb465b1c803316cb55bae0c2d7cf3c0008589 (patch)
tree4ff4d283b4a55458a2107b8484cbbfd991c8d523 /src/resolve
parent6043679c6ec485a96926f07c26d77f2c0c246fe2 (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 'src/resolve')
-rw-r--r--src/resolve/resolved-manager.c2
-rw-r--r--src/resolve/resolved.conf.in2
2 files changed, 2 insertions, 2 deletions
diff --git a/src/resolve/resolved-manager.c b/src/resolve/resolved-manager.c
index bf5efe4cfa..09e15fa230 100644
--- a/src/resolve/resolved-manager.c
+++ b/src/resolve/resolved-manager.c
@@ -485,7 +485,7 @@ int manager_new(Manager **ret) {
m->llmnr_support = RESOLVE_SUPPORT_YES;
m->mdns_support = RESOLVE_SUPPORT_NO;
- m->dnssec_mode = DNSSEC_NO;
+ m->dnssec_mode = DEFAULT_DNSSEC_MODE;
m->read_resolv_conf = true;
m->need_builtin_fallbacks = true;
m->etc_hosts_last = m->etc_hosts_mtime = USEC_INFINITY;
diff --git a/src/resolve/resolved.conf.in b/src/resolve/resolved.conf.in
index efc9c6733a..a288588924 100644
--- a/src/resolve/resolved.conf.in
+++ b/src/resolve/resolved.conf.in
@@ -16,4 +16,4 @@
#FallbackDNS=@DNS_SERVERS@
#Domains=
#LLMNR=yes
-#DNSSEC=no
+#DNSSEC=@DEFAULT_DNSSEC_MODE@