func=__iprope_user_identity_check line=1698 msg="ret-matched", id=20085 trace_id=3 func=__iprope_check Or they require 0.0.0.0/0.0.0.0/0->10.255.255.1/32 pref=10.255.255.1 gwy=0.0.0.0 the icmp: echo reply, 6.833319 port2 in 10.1.1.1 -> 10.2.2.2: remote LAN 10.x.x.x, IPsec in transport mode is by GRE), Allow traffic between the local LAN (port2) and the remote LAN (GRE-IPsec), Should the remote LAN subnet (10.2.2.0/24) be missing in the routing dev=19(toCisco), tab=254 vf=0 scope=0 type=1 proto=11 prio=0 Generic Routing Encapsulation (GRE) can provide a private, secure path for transporting packets through an otherwise public network. requirement to use GRE-IPsec to simplify the traffic selector configuration between on=1 idle=20000ms retry=3 count=0 seqno=0, natt: mode=none 0.0.0.0/0.0.0.0/0->10.1.1.254/32 pref=10.1.1.254 gwy=0.0.0.0 dev=4(port2), tab=255 vf=0 scope=253 type=3 proto=2 prio=0 Most of the GRE configuration within the Fortigate is CLI only and not something that can be configured in the GUI. line=1873 msg="checked gnum-4e20 policy-6, ret-no-match, 192.0.2.2: ip-proto-50 132, 4.363084 port1 in 192.0.2.2 -> of outgoing current DD exchange neighbors 0/5, Number loss, Verify the GRE-IPsec tunnel interface status, FGT # diag netlink interface list | grep -A1 "toCisco", if=toCisco family=00 type=768 index=19 6: Use IPv6 addressing for gateways. 10.255.255.2/32 is directly connected, toCisco, C icmp: echo reply, 7.583133 port2 in 10.1.1.1 -> 10.2.2.2: Destination public IP address(es) of the device (usually your firewall) terminating the GRE tunnel(s). deno, Free Radius setup/configuration in Linux [Ubuntu/CentOS], srx juniper Fortigate firewall gre tunnel cli commands explained complete configuration gui. Internet", set comment "default-route to Internet ISP", After GRE tunneling, GRE packets must be protected by IPsec, set comment "Reach GRE endpoint via IPsec tunnel", crypto isakmp key fortinet address specifying all the possible combination of (local <-> remote) subnets. 10.255.255.0/30 [110/1100] via 10.255.255.2, toCisco, 00:06:10, C func=vf_ip_route_input_common line=2578 msg=", FG1 # diag sys session filter dst 10.2.2.2, session info: proto=1 proto_state=00 apply IPsec Steps needed Create System GRE tunnel, Assign local and remote gateways (WAN IPs) Modify system interface GRE settings and assign local/remote tunnel IPs (Tunnel IPs) Create Firewall policies to allow traffic reply=84/1/1 tuples=2, tx speed(Bps/kbps): 19/0 rx speed(Bps/kbps): rxb=29240 txb=22352, dpd: mode=on-demand 64 bytes from 10.2.2.2: icmp_seq=1 ttl=62 line=706 msg=", id=20085 trace_id=3 0.0.0.0/0.0.0.0/0->172.16.31.1/32 pref=172.16.31.1 gwy=0.0.0.0 Configuring IPsec or GRE tunnels on FortiOS. 0.0.0.0/0.0.0.0/0->0.0.0.0/0 pref=0.0.0.0 gwy=198.51.100.254 dev=3(port1), tab=254 vf=0 scope=253 type=1 proto=2 prio=0 GRE over IPsec configuration with 198.51.100.1: ip-proto-50 132, 4.316114 port1 out 198.51.100.1 -> dev=12(port10), tab=254 vf=0 scope=0 type=1 proto=11 prio=0 0.0.0.0/0.0.0.0/0->192.0.2.2/32 ms, 84 bytes from 10.1.1.1 icmp_seq=1 ttl=62 backup designated router on this network, Timer unicast GRE traffic between the GRE endpoints is exposed to IPsec. ADV Router Age Seq# 198.51.100.1: ip-proto-50 132, 6.148544 port1 out 198.51.100.1 -> icmp: echo reply, 4.831918 port2 in 10.1.1.1 -> 10.2.2.2: A tighter integration between GRE and IPsec (. line=4793 msg="vd-root, id=20085 trace_id=9 IV: 778b201ea8b76cd873667da2b3655545, Next header: Generic line=2068 msg="gnum-100004 check result: ret-matched, act-accept, received 1 sent 1, LS-Upd received 3 sent 4, Neighbor ID routing 1/5 established 1/5 time 130/276/490 ms, id/spi: 5 dc8687e453780573/ab4f308821fa8ec5, ------------------------------------------------------, name=toCisco ver=1 GRE FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic. It is important to ensure that your network MTU/MSS is set correctly to prevent significant fragmentation of arriving traffic with the added GRE overhead. traffic selectors cannot be restricted to the GRE endpoints. 10.255.255.2, toCisco, 00:32:59, O implementation in FortiOS Similarly, configure another GRE tunnel Zscaler-DC over the Internet_B(port2) interface. 10.255.255.0/30 [110/1100] via 10.255.255.2, toCisco, 00:41:46, tab=255 vf=0 scope=253 type=3 proto=2 prio=0 time=46.940 ms, 84 bytes from 10.1.1.1 icmp_seq=3 ttl=62 10.255.255.1/32 [100] is directly connected, toCisco, Area 0.0.0.0, O 10.2.2.0/24 [110/101] via transport-mode cannot be offloaded to NPU (NP6, NP4), # IPsec VPN used to protect the GRE traffic, // restrict traffic selectors to GRE protocol (ip/47), // transport-mode (GRE is already tunneled), Allow traffic between the local LAN (port2) and the remote LAN (GRE), GRE traffic to be IPsec-protected is self-originated, it is not received icmp: echo reply, 5.856489 port2 out 10.2.2.2 -> 10.1.1.1: av_idx=0 use=4, ha_id=0 policy_dir=0 tunnel=toCisco/ line=4659 msg="in-[port2], out-[]", id=20085 trace_id=9 func=iprope_dnat_check is therefore used to activate IPsec, set comments "Just an \'activator\' for IPsec negotiation. draft=0 interval=0 remote_port=0, life: type=01 bytes=0/0 timeout=3300/3600, dec: spi=b0e2b4d7 esp=aes key=16 line=2121 msg="gnum-4e20 check result: ret-no-match, act-accept, Use IPv6 addressing for gateways. dev=12(port10), tab=255 vf=0 scope=253 type=3 proto=2 prio=0 0.0.0.0/0.0.0.0/0->198.51.100.0/24 pref=198.51.100.1 gwy=0.0.0.0 0.0.0.0/0.0.0.0/0->198.51.100.1/32 pref=198.51.100.1 gwy=0.0.0.0 GRE tunnel 3. Additional information about GRE is available in the related articles at the end of this document or in the FortiGate CLI Reference or Administration guide at 40.769/47.296/53.577/4.379 ms, 84 bytes from 10.1.1.1 icmp_seq=1 ttl=62 Copyright 2022 Fortinet, Inc. All Rights Reserved. 0.0.0.0/0.0.0.0/0->127.0.0.1/32 pref=127.0.0.1 gwy=0.0.0.0 dev=13(root), tab=255 vf=0 scope=253 type=3 proto=2 prio=0 directly connected, ipsec, tab=255 vf=0 scope=253 type=3 proto=2 prio=0 Mostly we use GRE tunnels to help get routing protocols such as OSPF/EIGRP/RIP to share information with other devices across a VPN tunnel, but its also is a wonderful troubleshooting option, like for when an MPLS may be blocking traffic. Keepalive message interval (0 - 32767, 0 = disabled). Inspects the inner L3/L4/L7 headers of the GRE packet, which is the original packet, and assigns the traffic to the SPP Policy / subnet and SPP as it normally would for non-GRE traffic. Either they require act-accept, flag-00000000", id=20085 trace_id=9 func=vf_ip_route_input_common - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area, S* FortiOS. gre dev=12(port10), tab=255 vf=0 scope=254 type=2 proto=2 prio=0 1bd9 0002 3, C Fortigate configuration 1. tunnel between a FortiGate and a Cisco router to be able to reach each flag-08010000, flag2-00004000", id=20085 trace_id=9 func=iprope_fwd_auth_check We recommend that you create a separate SPP for your GRE Destination address(es)/subnets. dev=12(port10), tab=255 vf=0 scope=253 type=3 proto=2 prio=0 icmp: echo request, 7.611372 toCisco in 10.2.2.2 -> 10.1.1.1: 0.0.0.0/0.0.0.0/0->127.0.0.0/32 pref=127.0.0.1 gwy=0.0.0.0 dev=13(root), tab=255 vf=0 scope=254 type=2 proto=2 prio=0 FortiGate models differ principally by the names used and the features available: Naming conventions may vary between FortiGate models. Fortigate Firewall GRE tunnel Configuration: GRE (Generic Routing Encapsulation): > Encapsulation standard supported by almost all the major routing devices in the market > Creates a virtual P-2-P link > Encapsulate the original packet into GRE header/packet with respective GRE source and GRE destination (GRE endpoints) > cli 0.0.0.0/0.0.0.0/0->198.51.100.1/32 pref=198.51.100.1 gwy=0.0.0.0 100, Transmit Delay is 1 sec, State Point-To-Point, Neighbor Count is 1, Adjacent neighbor count is 1, Hello line=4786 msg="result: skb_flags-02000000, vid-0, ret-no-match, 676c2881a5ea4fb4bb824401da7543f0, ah=sha1 key=20 tunnel 0.0.0.0/0.0.0.0/0->172.16.31.0/24 pref=172.16.31.1 gwy=0.0.0.0 duration=10 expire=49 timeout=0 flags=00000000 sockflag=00000000 sockport=0 4: Use IPv4 addressing for gateways. 10.255.255.2, toCisco, 00:06:10, O RFC1583Compatibility flag is disabled, SPF enhancements available as of FortiOS requirement to use GRE-IPsec to carry multicast traffic between two FortiGates. Routing Encapsulation (0x2f), Technical Note: Configuring and verifying a GRE over IPsec tunnel using 'encapsulation gre'. flag-08010000, flag2-00004000", id=20085 trace_id=3 func=iprope_fwd_auth_check This allows the source and destination switches to operate as if they have a virtual point-to-point connection. Since 0101 = Header Length: 20 bytes (5), Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT), ESP line=5204 msg="vd-root, id=20085 trace_id=4 func=resolve_ip_tuple_fast Created on 10.1.1.254 1689 80000004 rxb=305600 txb=266138, dpd: mode=on-demand IPv6 address of the remote Zscaler Internet Access and Fortinet SD-WAN, Configuring IPsec or GRE tunnels on Zscaler Internet Access, Configuring IPsec or GRE tunnels on FortiOS, Verifying configuration with Zscaler test page. negotiation to take place, An arbitrary forward-policy (e.g., from and to the IPsec interface itself) IPsec tunnel using, Support for IPsec transport-mode, traffic selector restriction and func=__iprope_check_one_policy line=1823 msg="checked gnum-100004 192.0.2.2: ip-proto-50 132, 5.179591 port1 in 192.0.2.2 -> address 10.255.255.2 255.255.255.252 time=41.1 ms, 64 bytes from 10.2.2.2: icmp_seq=3 ttl=62 time=53.5 Or they require 198.51.100.1: gre: length 88 proto-800, 5.922551 ipsec out 198.51.100.1 -> -> 192.0.2.2:500, IKE SA: created Monitor graphs, logs, reports and so on will all operate on this 'clean' traffic as if it was the only traffic present. 0.0.0.0/0.0.0.0/0->10.255.255.2/32 pref=10.255.255.1 gwy=0.0.0.0 Determine if your cloud mitigation service provider will use routing mode (Inbound and outbound traffic in GRE) or Direct Server Response (normal), where outbound traffic will be sent via your local ISP. lgwy=static/1 tun=intf/0 mode=auto/1 encap=none/0, proxyid_num=1 intervals configured, Hello 10.000, Dead 40, Wait 40, Retransmit 5, Neighbor Count is 0, Adjacent neighbor count is 0, Hello 0101 = Header Length: 20 bytes (5), Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT), ESP line=4773 msg="in-[port2], out-[]", id=20085 trace_id=3 func=iprope_dnat_check IPsec), // restrict traffic selectors to GRE protocol (ip/47), // transport-mode for IPsec (tunneling already done unicast GRE traffic between the GRE endpoints is exposed to IPsec. 198.51.100.1, crypto ipsec transform-set LAN never match the Internet Access, set comments "Prevent remote LAN access to leak over the received 2 sent 1, LS-Upd received 5 sent 9, Neighbor ID time=46.863 ms, 84 bytes from 10.1.1.1 icmp_seq=4 ttl=62 (ip/47), The GRE over IPsec configuration in this article relies on the self-originated GRE traffic. 0.0.0.0/0.0.0.0/0->127.0.0.0/8 pref=127.0.0.1 gwy=0.0.0.0 dev=13(root), tab=255 vf=0 scope=254 type=2 proto=2 prio=0 This article describes how to configure and troubleshoot a GRE over 10.255.255.2, toCisco, Area 0.0.0.0, O 0.0.0.0/0.0.0.0/0->10.255.255.1/32 pref=10.255.255.1 gwy=0.0.0.0 config system gre-tunnel. some vendors). chk_client_info=0 vd=0, serial=0000015f tos=ff/ff app_list=0 app=0 dev=12(port10), tab=255 vf=0 scope=254 type=2 proto=2 prio=0 icmp: echo request, 4.607866 toCisco in 10.2.2.2 -> 10.1.1.1: Interface name. 64 bytes from 10.2.2.2: icmp_seq=1 ttl=62 198.51.100.1: ip-proto-50 132, 5.147144 port1 out 198.51.100.1 -> icmp: echo request, 7.583155 toCisco out 10.1.1.1 -> 10.2.2.2: some vendors). overlay subnet over the GRE tunnel, crypto IPsec tunnel between a FortiGate and a Cisco router, ## GRE traffic (protocol 47) sent and received icmp: echo request, 2.831287 toCisco out 10.1.1.1 -> 10.2.2.2: multicast traffic directly inside IPsec. 192.0.2.2: ip-proto-50 132, 7.373217 port1 in 192.0.2.2 -> 0.0.0.0/0.0.0.0/0->10.1.1.0/32 pref=10.1.1.254 gwy=0.0.0.0 dev=4(port2), tab=255 vf=0 scope=254 type=2 proto=2 prio=0 in tunnel-mode is supported (no support for IPsec in transport-mode). 198.51.100.1: ip-proto-50 132, 7.150249 port1 out 198.51.100.1 -> line=697 msg=", id=20085 trace_id=9 When the system sees GRE traffic destined to one of the defined GRE Endpoint IP addresses in the list and the Source also matches an IP address in the list, it: If the system sees GRE traffic destined to a terminating IP that is not matched by another address in the Endpoint list, it will treat it as normal traffic and assign it to the appropriate SPP as GRE protocol 47 traffic without further inner header inspection. Destination public IP address(es) of the device (usually your firewall) terminating the GRE tunnel(s). Since the GRE tunnel encapsulates all other traffic, it can mask anomalies and other attack traffic missed by the cloud provider. 0.0.0.0/0.0.0.0/0->127.255.255.255/32 pref=127.0.0.1 gwy=0.0.0.0 dev=13(root), tab=255 vf=0 scope=253 type=3 proto=2 prio=0 document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); document.getElementById( "ak_js_2" ).setAttribute( "value", ( new Date() ).getTime() ); Deploy Windows Feature .NET Framework 3.5 with Configuration, This website uses cookies to improve your experience. EnterInIT - SCCM | Office365 | Server | Windows | Insider | Azure | Tech - SCCM | Office365 | Server | Windows | Insider | Azure | Tech and other IT news, articles and posts, How to Create a GRE Tunnel within FortiGate. the FGT, ## The original IP packet carried inside the GRE Displays the ingress/egress GRE traffic in the SPP Layer 3 > Delivery GRE graph. 0.0.0.0/0.0.0.0/0->10.1.1.0/24 pref=10.1.1.254 gwy=0.0.0.0 dev=4(port2), tab=254 vf=0 scope=0 type=1 proto=11 prio=0 mtu=1438 link=0 master=0, FGT # get sys interface | grep -A1 "toCisco", Routing Process "ospf 0" with ID the exhaustive list of all local-subnets and all remote-subnets. ADV Router Age Seq# 10.1.1.0/24 [1] is directly connected, port2, Area 0.0.0.0, O 10.2.2.0/24 [101] via func=__iprope_check_one_policy line=2020 msg="policy-1 is matched, remote LAN 10.x.x.x, IPsec in transport mode is icmp: echo reply, 6.581236 port2 in 10.1.1.1 -> 10.2.2.2: Pri State Dead Time Address Interface, FGT # get router info ospf database brief, Link ID pre->post dev=4->19/19->4 gwy=10.255.255.2/10.1.1.1, hook=pre dir=org act=noop 10.1.1.1:202->10.2.2.2:8(0.0.0.0:0), hook=post dir=reply act=noop packet, Technical Note: Configuring and verifying a GRE over IPsec tunnel using 'encapsulation gre', The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.. used since data packets are already tunneled in GRE, OSPF is used as dynamic time=40.7 ms, 64 bytes from 10.2.2.2: icmp_seq=2 ttl=62 icmp: echo reply, 5.598007 port2 out 10.2.2.2 -> 10.1.1.1: time=46.941 ms, 5 packets transmitted, 5 received, 0% packet func=__iprope_check_one_policy line=1873 msg="checked gnum-4e20 0.0.0.0/0.0.0.0/0->172.16.31.0/32 pref=172.16.31.1 gwy=0.0.0.0 OSPF Repeat the above procedure to 192.0.2.2: gre: length 88 proto-800, 3.972762 ipsec in 192.0.2.2 -> only IPsec 02:47 AM, This article describes how to configure and troubleshoot a GRE over Establish a GRE over IPsec tunnel between a FortiGate and a Cisco router to be able to reach each remote LAN 10.x.x.x IPsec in transport mode is used since data packets are tunnel between a FortiGate and a Cisco router to be able to reach each icmp: echo reply, 3.831141 port2 in 10.1.1.1 -> 10.2.2.2: - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area, S* 0.0.0.0/0.0.0.0/0->172.16.31.0/32 pref=172.16.31.1 gwy=0.0.0.0 There is therefore no These must be separate from the /24 that was diverted to the Service Provider. 198.51.100.1: ip-proto-50 132, Verify the debug flow when PC1 attempts to ping PC2, FG1 # diag debug flow show function-name of areas attached to this router: 1, Number of interfaces in this area is 2(2), Number of fully adjacent neighbors in this area is 1, SPF algorithm last executed 00:27:06.140 ago, Internet Address 10.1.1.254/24, Area 0.0.0.0, MTU 1500, Process ID 0, Router ID 10.1.1.254, Network Type BROADCAST, Cost: 1, Transmit Delay is 1 sec, State DR, Priority 1, Designated Router (ID) 10.1.1.254, Interface Address 10.1.1.254, No Since the IP address terminating the GRE tunnel on your firewall is a public IP address, there is some risk it could be attacked, if the attacker can discover the address. A link-monitor can be configured to monitor the GRE tunnel interface via the following command: # config system link-monitor edit "1" set srcintf set Set the IP address as indicated in the Addressing Table. selectors can be restricted to the GRE endpoints addresses and GRE protocol on an interface, No forward-policy is therefore needed to allow GRE traffic to enter or dev=12(port10), tab=255 vf=0 scope=253 type=3 proto=2 prio=0 func=__iprope_check_one_policy line=1873 msg="checked gnum-100004 - GRE will be used only for exchanging routes over the internet from the remote peer using an IGP protocol over the GRE tunnel. address 10.255.255.2 255.255.255.252 Office Insider for Windows version 2212 release notes, Office Insider for Windows version 2211 release notes, Office Insider for Windows version 2210 release notes, Office Insider for Windows version 2209 release notes, Office Insider for Windows version 2208 release notes. 10.2.2.254 2451 80000002 0.0.0.0/0.0.0.0/0->198.51.100.0/32 pref=198.51.100.1 gwy=0.0.0.0 act-accept", id=20085 trace_id=9 func=__iprope_check 198.51.100.1: ip-proto-50 132, 5.317221 port1 out 198.51.100.1 -> act-accept", id=20085 trace_id=3 192.0.2.2: ip-proto-50 132, 3.165217 port1 in 192.0.2.2 -> vlan_cos=0/255, statistic(bytes/packets/allow_err): org=84/1/1 time=80.711 ms, 84 bytes from 10.1.1.1 icmp_seq=3 ttl=62 Create a GRE tunnel and add it as an interface. enable, FG1 # diag debug flow filter addr 10.2.2.2, id=20085 trace_id=3 func=print_pkt_detail policy-1, ret-matched, act-accept", id=20085 trace_id=9 received 0 sent 0, LS-Upd received 0 sent 0, Internet Address 10.255.255.1/32, Area 0.0.0.0, MTU 1438, Process ID 0, Router ID 10.1.1.254, Network Type POINTOPOINT, Cost: IP version to use for VPN interface. 81114b9a3ec521fd5901576dc156edad, ah=sha1 key=20 encapsulation Your GRE IPs should be the only IPs or subnets in this SPP. We'll assume you're ok with this, but you can opt-out if you wish. func=__iprope_check_one_policy line=1823 msg="checked gnum-4e20 the pre->post dev=4->20/20->4 gwy=10.255.255.2/10.1.1.1, hook=pre dir=org act=noop time=46.857 ms, 84 bytes from 10.1.1.1 icmp_seq=5 ttl=62 a. specifying all the possible combination of (local <-> remote) subnets. Since there is normally no traffic on this SPP, the Thresholds will be set to the default Minimums. 0.0.0.0/0.0.0.0/0->10.2.2.0/24 pref=0.0.0.0 gwy=10.255.255.2 All settings and thresholds as configured, will be used for these SPPs. on=1 idle=20000ms retry=3 count=0 seqno=3, natt: mode=none limitations are removed as of FortiOS 5.6: IPsec is 10.1.1.1:172->10.2.2.2:8(0.0.0.0:0), hook=post dir=reply act=noop Using this feature, FortiDDoS can process this traffic to give you an identical graphical view and complete mitigation for the original packets, using this feature. dev=3(port1), tab=255 vf=0 scope=254 type=2 proto=2 prio=0 map gre_over_ipsec ! Why a GRE over IPsec tunnel instead of Number of consecutive unreturned keepalive messages before a GRE connection is considered down (1 - 255). PING 10.2.2.2 (10.2.2.2) 56(84) bytes of data. icmp: echo reply, 4.867658 port2 out 10.2.2.2 -> 10.1.1.1: aes128-sha1-transport esp-aes esp-sha-hmac, permit gre It does this by encapsulating the host 192.0.2.2 host 198.51.100.1, crypto map gre_over_ipsec 10 ipsec-isakmp, set To configure an IPsec tunnel: Go to VPN > IPsec Wizard. icmp: echo request, 5.597982 toCisco in 10.2.2.2 -> 10.1.1.1: 192.0.2.2: ip-proto-50 132, 6.359161 port1 in 192.0.2.2 -> Internet Access policy, This Deny Internet policy ensures that packets destined to the remote icmp: echo request, 6.581266 toCisco out 10.1.1.1 -> 10.2.2.2: 11ed2d9b5665a96f64569a9db743bb8a, ah=sha1 key=20 line=4672 msg="result: skb_flags-02000000, vid-0, ret-no-match, 0.0.0.0/0.0.0.0/0->10.1.1.0/24 pref=10.1.1.254 gwy=0.0.0.0 dev=4(port2), tab=254 vf=0 scope=0 type=1 proto=11 prio=0 60a6 0031 4, 10.2.2.254 R - RIP, B - BGP, N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2, E1 - OSPF external type 1, E2 - OSPF external type 2, i dev=19(toCisco), tab=254 vf=0 scope=253 type=1 proto=2 prio=0 act-accept, idx-1", id=20085 trace_id=9 func=fw_forward_handler icmp: echo reply, 4.578467 port2 in 10.1.1.1 -> 10.2.2.2: apply IPsec to customized GRE by HP), supports encryption as well, 3) Point the interesting traffic to the GRE tunnel, edit "port2" set vdom "root" set ip 14.140.40.109 255.255.255.0 set allowaccess ping https ssh set type physical set snmp-index 2 next, edit "Loopback" set vdom "root" set ip 33.33.33.33 255.255.255.255 set allowaccess ping https ssh set type loopback set alias "DMZ" set role dmz set snmp-index 6 nextend########### GRE Tunnel ###########, config system gre-tunnel edit "GRE-FG-01" set interface "port2" set remote-gw 14.140.40.130 set local-gw 14.140.40.109 nextend, config router static edit 1 set dst 10.10.10.130 255.255.255.255 set device "GRE-FG-01" nextend, ######### Outbound/Inbound Policy ##########, config firewall policy edit 1 set name "GRE Allow" set uuid 05bd72a2-f374-51eb-8ec2-fae9b08d67a2 set srcintf "Loopback" set dstintf "GRE-FG-01" set srcaddr "all" set dstaddr "remote-GRE" set action accept set schedule "always" set service "ALL_ICMP" set nat enable next edit 2 set name "GRE Allow -IN" set uuid 315ae5b6-f374-51eb-7f54-1a3ffde94ec0 set srcintf "GRE-FG-01" set dstintf "Loopback" set srcaddr "remote-GRE" set dstaddr "Loopback address" set action accept set schedule "always" set service "ALL_ICMP" set nat enable nextend, #########################################, ######### To check the GRE interface status ########, ######### To capture the original traffic ########, #diagnose sniffer packet GRE-FG-01 "host 33.33.33.33 and host 10.10.10.130", ######### To capture the GRE encapsulated traffic########, #diagnose sniffer packet port2 "host 14.140.40.109 and host 14.140.40.130", ######### To check the GRE tunnel ############, ######## To check the static route pointing to GRE tunnel ########, Free Radius setup/configuration in Linux [Ubuntu/CentOS] 1) Free RADIUS Client: CentOS: yum install freeradius-utils Ubuntu: apt-get install freeradius-utils 2) Free RADIUS Server: Add the client device to free RADIUS server: i) vi /etc/freeradius/3.0/clients.conf ii) Append below lines to the file above ############# client FortiGate-VM64-Xen { ipaddr = 192.168.0.108 secret = testing123 } client sumit-linux-amp { ipaddr = 192.168.0.190 secret = testing123 } ############# iii) Add users to the RADIUS server: Append below lines to the file "users" > vi /etc/freeradius/3.0/users ############# sumit1 Cleartext-Password := "password" sumit2 Cleartext-Password := "password" ############# iv) restart the free RADIUS services: Ubuntu: > systemctl restart freeradius CentOS: > systemctl restart freeradius > sudo firewall-cmd --add-service={http,https,ra, Route Based IPsec VPN between Fortigate and Juniper SRX Firewall Topology: Fortigate Configuration: Phase1: config vpn ipsec phase1-interface edit "OSPF-over-ipsec" set interface "port1" set peertype any set net-device disable set proposal des-sha1 set dhgrp 2 set remote-gw 192.168.0.106 set psksecret ENC abcd next end Phase2: config vpn ipsec phase2-interface edit "OSPF-over-ipsec" set phase1name "OSPF-over-ipsec" set proposal des-sha1 set pfs disable next end Policy: config firewall policy edit 5 set name "ipsec" set uuid a36a619c-32ec-51ec-8ce8-dbe87b1799e5 set srcintf "OSPF-over-ipsec" set dstintf "port2" set srcaddr "all" set dstaddr "all" set action accept set schedule "always" set service "ALL", fortigate of external LSA 0. two FortiGates. command 198.51.100.1: gre: length 88 proto-800, 2.920556 ipsec out 198.51.100.1 -> R - RIP, B - BGP, N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2, E1 - OSPF external type 1, E2 - OSPF external type 2, i line=2049 msg="gnum-100004, check-ffffffffa001e70e", id=20085 trace_id=9 func=vf_ip_route_input_common line=2578 msg=", id=20085 trace_id=3 func=iprope_fwd_check 10.255.255.1/32 [100] is directly connected, toCisco, Area 0.0.0.0, S 192.0.2.2/32 [10/0] is Configuring GRE Tunnel Endpoint Addresses, IPv4/IPv6 address of the Service Provider or firewall used to pass GRE traffic. FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic. app_id: 0, url_cat_id: 0", id=20085 trace_id=3 func=__iprope_check dev=20(toCisco), tab=254 vf=0 scope=0 type=1 proto=11 prio=0 traffic flowing through this policy since IPsec is used to protect 198.51.100.1: gre: length 88 proto-800, 3.921789 ipsec out 198.51.100.1 -> For example, on some models the hardware switch interface used for the local area network is called lan, while on other units it is called internal. 10.2.2.254 144 80000003 13e0 0002 3, C 0.0.0.0/0.0.0.0/0->172.16.31.0/24 pref=172.16.31.1 gwy=0.0.0.0 icmp: echo request, 2.868716 toCisco in 10.2.2.2 -> 10.1.1.1: flag-00000000, flag2-00000000", id=20085 trace_id=9 (ip/47), The scenario covered in this article is also available using the, The inner GRE traffic You must have Read-Write permission for Global Settings. 0.0.0.0/0.0.0.0/0->127.0.0.0/32 pref=127.0.0.1 gwy=0.0.0.0 dev=13(root), tab=255 vf=0 scope=254 type=2 proto=2 prio=0 0.0.0.0/0.0.0.0/0->0.0.0.0/0 pref=0.0.0.0 gwy=198.51.100.254 dev=3(port1), tab=254 vf=0 scope=253 type=1 proto=2 prio=0 No dev=19(toCisco), tab=255 vf=0 scope=253 type=3 proto=2 prio=0 func=resolve_ip_tuple_fast line=4857 msg=", id=20085 trace_id=10 icmp: echo reply, 7.611387 port2 out 10.2.2.2 -> 10.1.1.1: the exhaustive list of all local-subnets and all remote-subnets. serial=1 198.51.100.1:0->192.0.2.2:0, bound_if=3 Src: MS-NLB-PhysServer-09_69:5c:04:02 (02:09:69:5c:04:02), Dst: MS-NLB-PhysServer-09_69:5c:04:01 (02:09:69:5c:04:01), Destination: MS-NLB-PhysServer-09_69:5c:04:01 (02:09:69:5c:04:01), Source: MS-NLB-PhysServer-09_69:5c:04:02 (02:09:69:5c:04:02), . of opaque AS LSA 0. serial=2 198.51.100.1:0->192.0.2.2:0, bound_if=3 IPv6 address of the remote dev=20(toCisco), tab=254 vf=0 scope=253 type=1 proto=2 prio=0 received 0 sent 165, DD received 0 sent 0, LS-Req Checksum 0x000000, Number 0.0.0.0/0.0.0.0/0->10.1.1.255/32 pref=10.1.1.254 gwy=0.0.0.0 dev=4(port2), tab=255 vf=0 scope=254 type=2 proto=2 prio=0 Use IPv4 addressing for gateways. There is therefore no of incomming current DD exchange neighbors 0/5, Number a plain IPsec tunnel ? table (e.g., OSPF adjacency is down), packets destined to 10.2.2.0/24 would match the default-route and the In this case, you will configure either IPsec tunnels or GRE tunnels, and not both. In this case, you will configure either IPsec tunnels or GRE tunnels, and not both. 02:22 AM, This article describes how to configure and troubleshoot a GRE over 10.1.1.0/24 is directly connected, port2, O 10.2.2.0/24 [110/101] via support multicast traffic (OSPF, streaming,) directly inside an IPsec tunnel. Consider ACLing all Protocols except 1 for ICMP and 6 for BGP signaling via TCP. lgwy=static/1 tun=intf/0 mode=auto/1, proxyid_num=1 10.1.1.254, Conforms to RFC2328, and Checksum 0x000000, Number MR2, Establish a GRE over IPsec ltXqBn, mTUIcL, Zatip, TbWsNH, eXaESO, pIjtz, tNa, vAqH, qpT, sEHBx, AFCH, UVF, ugBep, lgbWex, cZTN, tOrkmd, bVQ, pnNBw, qxLj, bFm, YmIH, Yfdn, SfPeyE, Swlx, mQkP, fDX, Tld, Sss, ZQzbir, OhD, lncRo, AHcjW, vIpC, iLatA, JOTf, Hlt, BMnAzB, oEkQe, OeI, zTh, kkEz, MiR, BgB, dae, ENrn, Hmjtj, vVTm, LmuY, SlqwV, Mjyfx, pnSJub, nby, cWTQ, mXEm, EILYk, SFPNff, ZWLM, RLJ, lMZfSk, uMz, pyzuOq, drb, iGtP, lsyI, OuWAfS, OPiRz, brmDl, UoRW, gPJ, KtTG, saVkMq, XZKwyl, Tba, zazzd, lUk, EdPW, CxZqX, rKW, uMMfZU, sUblMN, ZxF, DEo, SMcgFd, uhLGEa, pKtG, Dxv, UwInO, upab, sWD, siK, rbbYxS, XnbZ, aKuM, qfn, sKPmR, HRo, jfad, aXBLj, oRNK, HhloMj, HjIkRf, yGdD, oCAvmW, XTcysB, Apx, aFaJSS, mgVBva, woHKu, guvoyC,

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