diff options
Diffstat (limited to 'src/etc/sysctl.d')
| -rw-r--r-- | src/etc/sysctl.d/30-vyos-router.conf | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/src/etc/sysctl.d/30-vyos-router.conf b/src/etc/sysctl.d/30-vyos-router.conf new file mode 100644 index 000000000..1946dc31a --- /dev/null +++ b/src/etc/sysctl.d/30-vyos-router.conf @@ -0,0 +1,97 @@ +# +# VyOS specific sysctl settings, see sysctl.conf (5) for information. +# + +# Panic on OOPS +kernel.panic_on_oops=1 + +# Timeout before rebooting on panic +kernel.panic=60 + +# Send all core files to /var/core/core.program.pid.time +kernel.core_pattern=/var/core/core-%e-%p-%t + +# ARP configuration +# arp_filter - allow multiple network interfaces on same subnet +# arp_announce - avoid local addresses no on target's subnet +# arp_ignore - reply only if target IP is local_address on the interface + +# arp_filter defaults to 1 so set all to 0 so vrrp interfaces can override it. +net.ipv4.conf.all.arp_filter=0 + +# https://phabricator.vyos.net/T300 +net.ipv4.conf.all.arp_ignore=0 + +net.ipv4.conf.all.arp_announce=2 + +# Enable packet forwarding for IPv4 +net.ipv4.ip_forward=1 + +# if a primary address is removed from an interface promote the +# secondary address if available +net.ipv4.conf.all.promote_secondaries=1 + +# Ignore ICMP broadcasts sent to broadcast/multicast +net.ipv4.icmp_echo_ignore_broadcasts=1 + +# Ignore bogus ICMP errors +net.ipv4.icmp_ignore_bogus_error_responses=1 + +# Send ICMP responses with primary address of exiting interface +net.ipv4.icmp_errors_use_inbound_ifaddr=1 + +# Log packets with impossible addresses to kernel log +net.ipv4.conf.all.log_martians=1 + +# Do not ignore all ICMP ECHO requests by default +net.ipv4.icmp_echo_ignore_all=0 + +# Disable source validation by default +net.ipv4.conf.all.rp_filter=0 +net.ipv4.conf.default.rp_filter=0 + +# Enable tcp syn-cookies by default +net.ipv4.tcp_syncookies=1 + +# Disable accept_redirects by default for any interface +net.ipv4.conf.all.accept_redirects=0 +net.ipv4.conf.default.accept_redirects=0 +net.ipv6.conf.all.accept_redirects=0 +net.ipv6.conf.default.accept_redirects=0 + +# Disable accept_source_route by default +net.ipv4.conf.all.accept_source_route=0 +net.ipv4.conf.default.accept_source_route=0 +net.ipv6.conf.all.accept_source_route=0 +net.ipv6.conf.default.accept_source_route=0 + +# Enable send_redirects by default +net.ipv4.conf.all.send_redirects=1 + +# Increase size of buffer for netlink +net.core.rmem_max=2097152 + +# Enable packet forwarding for IPv6 +net.ipv6.conf.all.forwarding=1 + +# Increase route table limit +net.ipv6.route.max_size = 262144 + +# Do not forget IPv6 addresses when a link goes down +net.ipv6.conf.default.keep_addr_on_down=1 +net.ipv6.conf.all.keep_addr_on_down=1 + +# Default value of 20 seems to interfere with larger OSPF and VRRP setups +net.ipv4.igmp_max_memberships = 512 + +# Enable conntrack helper by default +net.netfilter.nf_conntrack_helper=1 + +# Increase default garbage collection thresholds +net.ipv4.neigh.default.gc_thresh1 = 1024 +net.ipv4.neigh.default.gc_thresh2 = 4096 +net.ipv4.neigh.default.gc_thresh3 = 8192 +# +net.ipv6.neigh.default.gc_thresh1 = 1024 +net.ipv6.neigh.default.gc_thresh2 = 4096 +net.ipv6.neigh.default.gc_thresh3 = 8192 |