Hi everyone,
I’m currently testing a WireGuard setup and encountered a connectivity issue between two peers. Here’s the setup:
- WireGuard Interface IP:
172.16.0.1/24 - Peer A IP: `172.16.0.2/32
- Peer B IP: `172.16.0.4/32
- Both peers are configured on the same WireGuard interface.
The tunnel comes up fine, and each peer can reach the Router (172.16.0.1), but they cannot ping each other (172.16.0.2 <-> 172.16.0.4).
Questions:
- Is it necessary to add explicit firewall rules to allow traffic between peers?
- Should the peer IPs use /24 instead of /32 in the config?
I’d really appreciate your insights!
Thanks in advance.
here is my config.
/interface bridge
add admin-mac= auto-mac=no comment=defconf name=bridge
/interface wireguard
add listen-port=47888 mtu=1420 name="WG5"
/interface list
add comment=defconf name=WAN
add comment=defconf name=LAN
/ip pool
add name=dhcp_pool1 ranges=10.10.10.100-10.10.10.200
/ip dhcp-server
add address-pool=dhcp_pool1 interface=bridge lease-time=2h name=dhcp1
/port
set 0 name=serial0
/system logging action
set 0 memory-lines=5000
set 1 disk-lines-per-file=5000
/disk settings
set auto-media-interface=bridge auto-media-sharing=yes auto-smb-sharing=yes
/interface bridge port
add bridge=bridge comment=defconf interface=ether2
add bridge=bridge comment=defconf interface=ether3
add bridge=bridge comment=defconf interface=ether4
add bridge=bridge comment=defconf interface=ether5
add bridge=bridge comment=defconf interface=ether6
add bridge=bridge comment=defconf interface=ether7
add bridge=bridge comment=defconf interface=ether8
add bridge=bridge comment=defconf interface=sfp1
/ip neighbor discovery-settings
set discover-interface-list=LAN
/interface detect-internet
set detect-interface-list=WAN internet-interface-list=all lan-interface-list=\
all wan-interface-list=all
/interface list member
add comment=defconf interface=bridge list=LAN
add comment=defconf interface=ether1 list=WAN
/interface wireguard peers
add allowed-address=172.16.0.2/32 interface="WG5" public-key=8ZQrIDt9mAysCBWnXmeR0cao4QcMSKPkkHviJ7di5gM=
add allowed-address=172.16.0.4/32 interface="WG5" public-key=iectDG6ufBzyPhYmzErbkYuCSTPXQ07Sd0MN8dFs/hg=
/ip address
add address=10.10.10.1/24 comment=LAN interface=bridge network=10.10.10.0
add address=172.16.0.1/24 interface="WG5" \
network=172.16.0.0
/ip dhcp-server network
add address=10.0.0.0/24 comment=defconf dns-server=10.10.10.1 gateway=\
10.10.10.1
add address=10.10.10.0/24 dns-server=10.10.10.1 gateway=10.10.10.1
/ip dns
set allow-remote-requests=yes servers=1.1.1.1,8.8.8.8
/ip dns static
add address=192.168.88.1 comment=defconf name=router.lan type=A
/ip firewall filter
add action=accept chain=input comment="allow WireGuard" dst-port=\
xx888 protocol=udp
add action=accept chain=input comment=\
"defconf: accept established,related,untracked" connection-state=\
established,related,untracked
add action=drop chain=input comment="defconf: drop invalid" connection-state=\
invalid
add action=accept chain=input comment="defconf: accept ICMP" protocol=icmp
add action=accept chain=input comment=\
"defconf: accept to local loopback (for CAPsMAN)" dst-address=127.0.0.1
add action=drop chain=input comment="defconf: drop all not coming from LAN" \
in-interface-list=!LAN
add action=accept chain=forward comment="defconf: accept in ipsec policy" \
ipsec-policy=in,ipsec
add action=accept chain=forward comment="defconf: accept out ipsec policy" \
ipsec-policy=out,ipsec
add action=fasttrack-connection chain=forward comment="defconf: fasttrack" \
connection-state=established,related hw-offload=yes
add action=accept chain=forward comment=\
"defconf: accept established,related, untracked" connection-state=\
established,related,untracked
add action=drop chain=forward comment="defconf: drop invalid" \
connection-state=invalid
add action=drop chain=forward comment=\
"defconf: drop all from WAN not DSTNATed" connection-nat-state=!dstnat \
connection-state=new in-interface-list=WAN
add chain=forward
/ip firewall nat
add action=masquerade chain=srcnat comment="defconf: masquerade" \
ipsec-policy=out,none out-interface-list=WAN
/ip firewall service-port
set sip disabled=yes
/ip route
add disabled=no dst-address=0.0.0.0/0 gateway=192.168.15.1 routing-table=main \
suppress-hw-offload=no
/ip service
set ftp disabled=yes
set ssh disabled=yes
set telnet disabled=yes
set www disabled=yes
set api disabled=yes
set api-ssl disabled=yes
/ipv6 firewall address-list
add address=::/128 comment="defconf: unspecified address" list=bad_ipv6
add address=::1/128 comment="defconf: lo" list=bad_ipv6
add address=fec0::/10 comment="defconf: site-local" list=bad_ipv6
add address=::ffff:0.0.0.0/96 comment="defconf: ipv4-mapped" list=bad_ipv6
add address=::/96 comment="defconf: ipv4 compat" list=bad_ipv6
add address=100::/64 comment="defconf: discard only " list=bad_ipv6
add address=2001:db8::/32 comment="defconf: documentation" list=bad_ipv6
add address=2001:10::/28 comment="defconf: ORCHID" list=bad_ipv6
add address=3ffe::/16 comment="defconf: 6bone" list=bad_ipv6
/ipv6 firewall filter
add action=accept chain=input comment=\
"defconf: accept established,related,untracked" connection-state=\
established,related,untracked
add action=drop chain=input comment="defconf: drop invalid" connection-state=\
invalid
add action=accept chain=input comment="defconf: accept ICMPv6" protocol=\
icmpv6
add action=accept chain=input comment="defconf: accept UDP traceroute" \
dst-port=33434-33534 protocol=udp
add action=accept chain=input comment=\
"defconf: accept DHCPv6-Client prefix delegation." dst-port=546 protocol=\
udp src-address=fe80::/10
add action=accept chain=input comment="defconf: accept IKE" dst-port=500,4500 \
protocol=udp
add action=accept chain=input comment="defconf: accept ipsec AH" protocol=\
ipsec-ah
add action=accept chain=input comment="defconf: accept ipsec ESP" protocol=\
ipsec-esp
add action=accept chain=input comment=\
"defconf: accept all that matches ipsec policy" ipsec-policy=in,ipsec
add action=drop chain=input comment=\
"defconf: drop everything else not coming from LAN" in-interface-list=\
!LAN
add action=accept chain=forward comment=\
"defconf: accept established,related,untracked" connection-state=\
established,related,untracked
add action=drop chain=forward comment="defconf: drop invalid" \
connection-state=invalid
add action=drop chain=forward comment=\
"defconf: drop packets with bad src ipv6" src-address-list=bad_ipv6
add action=drop chain=forward comment=\
"defconf: drop packets with bad dst ipv6" dst-address-list=bad_ipv6
add action=drop chain=forward comment="defconf: rfc4890 drop hop-limit=1" \
hop-limit=equal:1 protocol=icmpv6
add action=accept chain=forward comment="defconf: accept ICMPv6" protocol=\
icmpv6
add action=accept chain=forward comment="defconf: accept HIP" protocol=139
add action=accept chain=forward comment="defconf: accept IKE" dst-port=\
500,4500 protocol=udp
add action=accept chain=forward comment="defconf: accept ipsec AH" protocol=\
ipsec-ah
add action=accept chain=forward comment="defconf: accept ipsec ESP" protocol=\
ipsec-esp
add action=accept chain=forward comment=\
"defconf: accept all that matches ipsec policy" ipsec-policy=in,ipsec
add action=drop chain=forward comment=\
"defconf: drop everything else not coming from LAN" in-interface-list=\
!LAN
/system clock
/system routerboard settings
set enter-setup-on=delete-key
/tool mac-server
set allowed-interface-list=LAN
/tool mac-server mac-winbox
set allowed-interface-list=LAN