PCNSE Study Notes: Global Protect

Overview GlobalProtect: Solution to VPN Issues Extends NGFW to endpoints Deilvers full traffic visibility Simplifies Management Unifies policies Stops Advanced Threat Components Portal – Provides Management functions for GP; every client connecting to GP receives configuration information from the portal Gateways – Provide Security Enforcement for traffic External gateways provide security enforcement and VPN Access [...]

PCNSE Study Notes: Decryption

Decryption Concepts Encrypted traffic is growing every year PAN’s can decrypt SSHv2 and SSL/TLS inbound and outbound traffic SSL Establishment includes: Client – requests SSL connection Server – sends server public cert Client – Verifies Cert Client – sends encrypted session key Server – begins encrypted communications session When an SSL session is first established [...]

PCNSE Study Notes: Content-ID

Overview Scans traffic for/offers protection against/can do: Software Vulnerability exploits – detects attempts to exploit known software vulnerabilities Viruses – detects infected files crossing the firewall Spyware – detects spyware downloads and already infected system traffic Malicious URL’s – blocks URL’s known to be locations that host or assist any of the content scanned with [...]

PCNSE Study notes: App-ID

Application ID Overview An application is a specific program or feature who’s communication can be labeled, monitored and controlled App-ID does additional work beyond just port Port-based rules use ‘Service’ Application-based rules use ‘application’ Application rules will allow only the application traffic that is allowed (ex: FTP) and not other traffic using that port. Zero-day [...]

PCNSE Study Notes: Platforms and Architecture

Here is the datasheet for the hardware platforms, has some good information to look over! https://www.paloaltonetworks.com/resources/datasheets/product-summary-specsheet Security Platform Overview Recon, Weaponize, Deliver, Exploitation, Installation, Command & Control, Act on Objective NGFW: Identifies and inspects all traffic Blocks known threats Sense unknown to cloud Extends to mobile and virtual networks Threat Intel Cloud: Gathers potential threats [...]

How to setup the internet access through the Cisco ASA firewall?

Basic Guidelines for setting Internet through the Cisco ASA firewall: At first we need to configure the interfaces on the firewall. !— Configure the outside interface. interface GigabitEthernet0/0 nameif outside security-level 0 ip address !— Configure the inside interface. interface GigabitEthernet0/1 nameif inside security-level 100 ip address The nameif command gives [...]

What are the NAT syntax changes in the Cisco ASA firewall

There are major nat syntax changes after the ASA firewall iOS version 8.3. Regular static NAT: In the pre 8.3- static (inside,outside) net mask In the version 8.3 and later- object network obj- host nat (inside,outside) static Regular static PAT: In the pre 8.3- static (inside,outside) tcp 80 [...]

What is difference between DoS vs DDoS attacks?

In a Denial of Service (DoS) attack, a hacker uses a single Internet connection to either exploit a software vulnerability or flood a target with fake requests—usually in an attempt to exhaust server resources (e.g., RAM and CPU). On the other hand, Distributed Denial of Service (DDoS) attacks are launched from multiple connected devices that [...]

How to configure Site-to-Site VPN on Cisco ASA?

Access-Lists Add the ACLs which we will need to NAT, the encryption domain and the group policy. access-list Example_Policy_ACL extended permit tcp object-group Local_LAN object-group Remote_LAN eq 80 access-list Example_Policy_ACL extended deny ip any any access-list Example_VPN_ACL permit ip object-group Local_LAN object-group Remote_LAN Group Policy Create your group policy which will restrict traffic between hosts [...]

How packet flow in Palo Alto Firewall?

Basic: Initial Packet Processing —-> Security Pre-Policy —-> Application —-> Security Policy —-> Post Policy Processing Advance: Initial Packet Processing —-> Source Zone/Source Address —-> Forward Lookup —-> Destination Zone/Destination Address —-> NAT policy evaluated   Security Pre-Policy —-> Check Allowed Ports —-> Session Created   Application —-> Check for Encrypted Traffic —-> Decryption Policy —-> Application Override Policy —-> Application ID [...]

How packet flows in Checkpoint firewall?

Checkpoint process the packet in the ingress and the egress using two CHAINS. Basic: -Physical layer – ingress interface -Data Link Layer/Ethernet -Inspect Driver [inspect Engine] -Network Layer/IP Routing -Inspect Driver -Data Link Layer/Ethernet -Physical layer – egress interface Advance: 1. NIC hardware -The network card receives electrical signalling from the link partner. 2. NIC [...]

How to configure QoS on Cisco ASA firewall

There are three steps for configuring the QoS on Cisco ASA firewall 1.Identify the traffic or define the traffic classes. To identify the traffic first create a new access-list to match the traffic. Once access-list is created call it in the class-map ciscoasa(config)#access-list qos extended permit tcp any any eq 25 ciscoasa(config)#class-map qos ciscoasa(config-cmap)#match access-list [...]

Palo Alto-CLI cheat sheet

Device management: Show general system-health information –> show system info Show percent usage of disk partitions –> show system disk-space Show the maximum log file size –> show system logdb-quota Show running processes –> show system software status Show processes running in the management plane –> show system resources Show resource utilization in the dataplane [...]

Checkpoint firewall common commands part 2

For basic firewall informaton gathering: fgate stat-Status and statistics of Flood-Gate-1. fwaccel <stat|stats|conns> – View status, statistics or connection table of SecureXL. fw getifs-Show list of configured interfaces with IP and netmask. cpstat <app_flag> [-f flavour] -View OS, HW and CP application status. Issue cpstat without any options to see all possible application flags <app_flag> and [...]