Juniper SRX Firewall Basics

Learn juniper srx firewall basics via hands-on gns3 setup, configure zones (internal, external, dmz), vlan/irb, nat (static, destination, source), dhcp relay, and firewall filters, plus ospf/bgp.

Configure the vSRX firewall with 4 gb ram, 2 vcpus, eight adapters, and management (p0); use 8–10 gb for the GNS3 VM and enable ipsec, nat, routing, transparent mode.

Access juniper firewall via web and ssh by configuring the management interface, enabling web management and ssh services, and then logging in through http/https and ssh.

Configure juniper srx firewall interfaces by assigning ip addresses and placing them in the untrust security zone, then enable inbound ping to test connectivity between internal and external interfaces.

shows how to configure trust, untrust, and dmz zones on a Juniper SRX firewall, attach interfaces, enable inbound traffic, and create security policies to regulate cross-zone traffic.

Configure a Juniper SRX firewall filter to match source and destination addresses, ports, VLANs, and protocols, and apply accept, discard, or reject actions on interface input within security zones.

Configure VLAN and IRB on an SRX firewall, map VLAN ten to a layer 3 interface with 192.168.1.1/24, set an access port, enable ping, and reboot to apply transparent mode.

Configure a Juniper SRX firewall as a DHCP server to dynamically assign IP addresses, including pool range 192.168.1.2–192.168.1.200 and gateway 192.168.1.1, with untrust zone and DHCP services.

Configure ipv6 slaac on Juniper SRX by advertising a prefix through router advertisements for auto configuring the client’s ipv6 address, and assign the interface to a security zone.

Configure a dhcp relay on Juniper SRX to forward broadcasts to a dhcp server, set up dhcp pool and gateway, assign security zones, and add a trust-to-untrust policy for traffic.

Configure a layer three aggregated ethernet interface (e1) between Juniper SRX firewalls using LACP, bond gig links, assign 192.168.2.1/24 and 192.168.2.2/24, and enable zone-to-zone security with ping and static routes.

Configure IPv6 DHCPv6 server and client on a Juniper SRX firewall, enabling a stateful IPv6 address assignment with a dedicated pool, and contrast with stateless autoconfiguration.

Configure ebgp on juniper srx by setting up interfaces, untrust zone, and a bgp external group with local and neighbor addresses, then verify with bgp summary.

Configure OSPF routing instances on a Juniper SRX by creating a virtual router instance, assigning interfaces, enabling OSPF in area zero and backbone, and establishing full neighbor relations.