units: prohibit all IP traffic on all our long-running services (#6921)

Let's lock things down further.

diff --git a/units/systemd-coredump@.service.in b/units/systemd-coredump@.service.in
index d7eaf33..ef58f0c 100644 (file)
--- a/units/systemd-coredump@.service.in
+++ b/units/systemd-coredump@.service.in
@@ -34,4 +34,5 @@ RestrictAddressFamilies=AF_UNIX
 SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @reboot @swap
 SystemCallArchitectures=native
 LockPersonality=yes
+IPAddressDeny=any
 StateDirectory=systemd/coredump

diff --git a/units/systemd-hostnamed.service.in b/units/systemd-hostnamed.service.in
index 9bb5ad8..cfee2cb 100644 (file)
--- a/units/systemd-hostnamed.service.in
+++ b/units/systemd-hostnamed.service.in
@@ -30,4 +30,5 @@ RestrictAddressFamilies=AF_UNIX
 SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @reboot @swap
 SystemCallArchitectures=native
 LockPersonality=yes
+IPAddressDeny=any
 ReadWritePaths=/etc

diff --git a/units/systemd-journald.service.in b/units/systemd-journald.service.in
index 07e03e7..a747fe3 100644 (file)
--- a/units/systemd-journald.service.in
+++ b/units/systemd-journald.service.in
@@ -30,6 +30,7 @@ RestrictAddressFamilies=AF_UNIX AF_NETLINK
 SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @reboot @swap
 SystemCallArchitectures=native
 LockPersonality=yes
+IPAddressDeny=any
 
 # Increase the default a bit in order to allow many simultaneous
 # services being run since we keep one fd open per service. Also, when

diff --git a/units/systemd-localed.service.in b/units/systemd-localed.service.in
index 1366fa7..5dd8b18 100644 (file)
--- a/units/systemd-localed.service.in
+++ b/units/systemd-localed.service.in
@@ -30,4 +30,5 @@ RestrictAddressFamilies=AF_UNIX
 SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @reboot @swap
 SystemCallArchitectures=native
 LockPersonality=yes
+IPAddressDeny=any
 ReadWritePaths=/etc

diff --git a/units/systemd-logind.service.in b/units/systemd-logind.service.in
index f6daf77..de380a2 100644 (file)
--- a/units/systemd-logind.service.in
+++ b/units/systemd-logind.service.in
@@ -31,6 +31,7 @@ RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_INET AF_INET6
 SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @obsolete @raw-io @reboot @swap
 SystemCallArchitectures=native
 LockPersonality=yes
+IPAddressDeny=any
 FileDescriptorStoreMax=512
 
 # Increase the default a bit in order to allow many simultaneous

diff --git a/units/systemd-machined.service.in b/units/systemd-machined.service.in
index fb4df38..03b9bf5 100644 (file)
--- a/units/systemd-machined.service.in
+++ b/units/systemd-machined.service.in
@@ -24,6 +24,7 @@ RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_INET AF_INET6
 SystemCallFilter=~@clock @cpu-emulation @debug @keyring @module @obsolete @raw-io @reboot @swap
 SystemCallArchitectures=native
 LockPersonality=yes
+IPAddressDeny=any
 
 # Note that machined cannot be placed in a mount namespace, since it
 # needs access to the host's mount namespace in order to implement the

diff --git a/units/systemd-timedated.service.in b/units/systemd-timedated.service.in
index 9fca1d1..97130e9 100644 (file)
--- a/units/systemd-timedated.service.in
+++ b/units/systemd-timedated.service.in
@@ -28,4 +28,5 @@ RestrictAddressFamilies=AF_UNIX
 SystemCallFilter=~@cpu-emulation @debug @keyring @module @mount @obsolete @raw-io @reboot @swap
 SystemCallArchitectures=native
 LockPersonality=yes
+IPAddressDeny=any
 ReadWritePaths=/etc

diff --git a/units/systemd-udevd.service.in b/units/systemd-udevd.service.in
index d3d13ed..03909f5 100644 (file)
--- a/units/systemd-udevd.service.in
+++ b/units/systemd-udevd.service.in
@@ -29,3 +29,4 @@ RestrictRealtime=yes
 RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_INET AF_INET6
 SystemCallArchitectures=native
 LockPersonality=yes
+IPAddressDeny=any