Firewalld/Iptables site-to-site VPN routing/rules Announcing the arrival of Valued Associate...

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Firewalld/Iptables site-to-site VPN routing/rules



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern)
Come Celebrate our 10 Year Anniversary!pfSense Site-toSite VPN with OpenVPN connects but won't route trafficOpenVPN routing caseGateway between wireless network and wired network not routing packetsPings from VPN network to VPN client work; pings into from VPN client to VPN network fail - why?2 VPN tunnels over 2 independent connections and routingRouting to secondary LAN with ShorewallOpenVPN ChainingHow to configure dual homed server in order for both network segments to communicate?Site-to-site IPSec routing (Ubuntu, StrongSwan)OpenVPN and routing/iptables





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I have a site-to-site tunnel successfully setup. I'm having trouble with the SITE1 LAN accessing the LAN at SITE2.



Hosts on the LAN2 can ping the gateway at SITE1, Hosts on LAN1 can ping (and SSH) into the GW on LAN2. However, I cannot ping or SSH into hosts behind the GW.



Ipv4 forwarding is ENABLED.



When I traceroute from LAN1 host to LAN2 host, the trace dies at the GW of LAN2. This tells me my routes are good at least at each GW, so what do I need to do on the GW of LAN2 to allow ping and ssh through the tunnel?



The GW at LAN2 is Centos7 and here is the config:
ETH0=LAN, Firewalld zone=INTERNAL
WLANO=WAN Firewalld zone=EXTERNAL
TUN0=Tunnel Firewalld zone=TUNNEL



How do I allow SSH between LAN1 host through the GW on LAN2 into a host on LAN2?









share























  • First, before worrying about firewalls, are you sure this is a firewall problem, and not a routing problem? If you do a traceroute from a host at SITE2 for an address at SITE1 does it hit the VPN gateway?

    – Zoredache
    4 mins ago




















0















I have a site-to-site tunnel successfully setup. I'm having trouble with the SITE1 LAN accessing the LAN at SITE2.



Hosts on the LAN2 can ping the gateway at SITE1, Hosts on LAN1 can ping (and SSH) into the GW on LAN2. However, I cannot ping or SSH into hosts behind the GW.



Ipv4 forwarding is ENABLED.



When I traceroute from LAN1 host to LAN2 host, the trace dies at the GW of LAN2. This tells me my routes are good at least at each GW, so what do I need to do on the GW of LAN2 to allow ping and ssh through the tunnel?



The GW at LAN2 is Centos7 and here is the config:
ETH0=LAN, Firewalld zone=INTERNAL
WLANO=WAN Firewalld zone=EXTERNAL
TUN0=Tunnel Firewalld zone=TUNNEL



How do I allow SSH between LAN1 host through the GW on LAN2 into a host on LAN2?









share























  • First, before worrying about firewalls, are you sure this is a firewall problem, and not a routing problem? If you do a traceroute from a host at SITE2 for an address at SITE1 does it hit the VPN gateway?

    – Zoredache
    4 mins ago
















0












0








0








I have a site-to-site tunnel successfully setup. I'm having trouble with the SITE1 LAN accessing the LAN at SITE2.



Hosts on the LAN2 can ping the gateway at SITE1, Hosts on LAN1 can ping (and SSH) into the GW on LAN2. However, I cannot ping or SSH into hosts behind the GW.



Ipv4 forwarding is ENABLED.



When I traceroute from LAN1 host to LAN2 host, the trace dies at the GW of LAN2. This tells me my routes are good at least at each GW, so what do I need to do on the GW of LAN2 to allow ping and ssh through the tunnel?



The GW at LAN2 is Centos7 and here is the config:
ETH0=LAN, Firewalld zone=INTERNAL
WLANO=WAN Firewalld zone=EXTERNAL
TUN0=Tunnel Firewalld zone=TUNNEL



How do I allow SSH between LAN1 host through the GW on LAN2 into a host on LAN2?









share














I have a site-to-site tunnel successfully setup. I'm having trouble with the SITE1 LAN accessing the LAN at SITE2.



Hosts on the LAN2 can ping the gateway at SITE1, Hosts on LAN1 can ping (and SSH) into the GW on LAN2. However, I cannot ping or SSH into hosts behind the GW.



Ipv4 forwarding is ENABLED.



When I traceroute from LAN1 host to LAN2 host, the trace dies at the GW of LAN2. This tells me my routes are good at least at each GW, so what do I need to do on the GW of LAN2 to allow ping and ssh through the tunnel?



The GW at LAN2 is Centos7 and here is the config:
ETH0=LAN, Firewalld zone=INTERNAL
WLANO=WAN Firewalld zone=EXTERNAL
TUN0=Tunnel Firewalld zone=TUNNEL



How do I allow SSH between LAN1 host through the GW on LAN2 into a host on LAN2?







centos routing openvpn gateway





share












share










share



share










asked 6 mins ago









customcables067customcables067

337




337













  • First, before worrying about firewalls, are you sure this is a firewall problem, and not a routing problem? If you do a traceroute from a host at SITE2 for an address at SITE1 does it hit the VPN gateway?

    – Zoredache
    4 mins ago





















  • First, before worrying about firewalls, are you sure this is a firewall problem, and not a routing problem? If you do a traceroute from a host at SITE2 for an address at SITE1 does it hit the VPN gateway?

    – Zoredache
    4 mins ago



















First, before worrying about firewalls, are you sure this is a firewall problem, and not a routing problem? If you do a traceroute from a host at SITE2 for an address at SITE1 does it hit the VPN gateway?

– Zoredache
4 mins ago







First, before worrying about firewalls, are you sure this is a firewall problem, and not a routing problem? If you do a traceroute from a host at SITE2 for an address at SITE1 does it hit the VPN gateway?

– Zoredache
4 mins ago












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