Network – Page 2 – Patrick Marc's Networks

2024-07-022024-07-06

Check Point – CCSE – Day30 – Training Day 2

Those are my personal notes towards the certification and do not reflect any training from Check PointFor official Information please refer to sk163417. Start08:30End17:30 Chapter 3: Advanced Gateway Deployment (Continued)Chapter 4: Advanced Policy ConfigurationPolicy LayersDynamic ObjectsChapter 5: Advanced User Access ManagementChapter 6: Custom Thread PreventionChapter 7: Advanced Site-to-Site VPN Chapter 3: Advanced Gateway Deployment (Continued) …

Continue reading "Check Point – CCSE – Day30 – Training Day 2"

2024-07-022024-07-09

TCP Session Closing

Customer was approaching us if we see an issue to change the tcp behavior of an application interface, due to timing concerns on the server side. -> TCP [SYN] <- TCP [SYN,ACK] -> TCP [ACK] -> COPT [CR] <- COPT [CC] -> COPT [DT] <- TCP [ACK] -> COPT [DR] <- TCP [ACK] -> TCP …

Continue reading "TCP Session Closing"

2024-07-012024-07-01

BGP – Check Point Clish

Adding Check Point to the BGP setup. clish configshow bgp summaryshow bgp peer 10.255.2.5 detailedshow bgp peer 10.255.2.5 receivedshow route bgpRestarting BGP Peers in Gaia Clish clish config set as 65532 set bgp external remote-as 65001 on set bgp external remote-as 65001 peer 10.255.2.5 on set bgp external remote-as 65001 peer 10.255.2.5 route-refresh on set inbound-route-filter …

Continue reading "BGP – Check Point Clish"

2024-07-01

Issues with Private Addressing in the Internet (ietf.org)

Found this the other day. Issues with Private IP Addressing in the Internet (ietf.org)

2024-07-012024-07-06

Check Point – CCSE – Day31 – Training Day 1

Those are my personal notes towards the certification and do not reflect any training from Check PointFor official Information please refer to sk163417. Chapter 1: Introduction to Advanced DeploymentsChapter 2: Management High AvailabilitySyncronization Deployment Sync FailuersActive and Standby Changeover Backup and RestoreDedicated Log Server SmartEvent Server Chapter 3: Advanced Gateway Deployment Chapter 1: Introduction to …

Continue reading "Check Point – CCSE – Day31 – Training Day 1"

2024-06-30

Check Point – 31 Days + 4 before CCSE

Starting CCSE Training on Monday. TOPICS Management Upgrade and Migration Management High Availability Security Gateway Upgrades Advanced Check Point Maintenance Security Gateway Operations Policy Installation Gaia and Management APIs Acceleration Site-to-Site VPN Remote Access VPN Mobile Access VPN Clustering Advanced Logs and Monitoring Links https://www.checkpoint.com/downloads/training/CCSE_Overview_Flyer.pdf

2024-06-282024-06-29

BGP – Asymmetric Routing Fortigate or when it is the policy

Change the Setup to have two dedicated links from the fortigate to the Edgerouter. Internal6 and 7 on the Fortigate and eth4 on the edgerouters. Note to myself Policy blocked the traffic. Needed to change the source interfaces to include i6 and i7. config firewall policy edit 1 set srcintf internal1.997 next end Links https://community.fortinet.com/t5/FortiGate/Technical-Note-Reverse-Path-Forwarding-RPF-implementation-and/ta-p/194382

2024-06-262024-06-27

BGP – Do not advertise a network

Remove routes from Advertisement on a Forigate firewall Not to myself: 10.255.32.0/20 was wired on C1, local pref was missing. so it might make sens to add this to all incoming routes 'set local-preference 100', incoming there is no issue. show router route-map show router route-map config router route-map edit "EBGP-OUT-R2" config rule edit 1 …

Continue reading "BGP – Do not advertise a network"

2024-06-262024-06-26

BGP – Prevent becoming a Transit-AS

AS-Path FilteringNo-export CommunityPrefix-list FilteringDistribute List Filtering AS-Path Filtering ip as-path access-list 1 permit ^$ neighbor x.x.x.x filter-list 1 out No-export Community ip bgp-community new-format route-map NO-EXPORT set community no-export neighbor x.x.x.x route-map NO-EXPORT in neighbor x.x.x.x send-community Prefix-list Filtering ip prefix-list NO-TRANSIT permit x.x.x.x/x neighbor x.x.x.x prefix-list NO-TRANSIT out Distribute List Filtering access-list x deny x.x.x.x y.y.y.y …

Continue reading "BGP – Prevent becoming a Transit-AS"

2024-06-222024-07-07

BGP – MultiHoming

Cisco cisco01config show ip bgp summaryshow ip routeshow ip bgpcisco02config show ip bgp summaryshow ip routeEdgeRouter-Xedge01configshow ip routeedge02configshow ip routeFortiGateconfigget router info routing-table detailsTestsChanging the AS Numbersshow ip routeshow ip bgpOptimizing route mapscisco1show ip bgp neighbors 10.255.80.29 received-routesshow ip bgpshow ip routecisco2show ip bgp neighbors 10.255.80.28 received-routesshow ip routeBGP Prevent becoming an Transit ASNo-Export CommunityLinks …

Continue reading "BGP – MultiHoming"

2024-06-092024-06-11

Fortinet – Named Static Routes

Fortinet Firewalls support the use of address objects in static routes. This includes individual address objects, address groups and FQDN address objects. This feature is particularly useful if you have numerous VPN connections or if you reach the maximum number of configurable static routes on the gateway. For example, lower-end models like the 60E support …

Continue reading "Fortinet – Named Static Routes"

Tag: Network