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Question 1

Score: 0/0

Which Sophos Firewall zone is typically assigned to interfaces facing the internal trusted network?

WAN

LAN

DMZ

VPN

to track

2026 Statistics

Key Facts: Sophos Firewall Engineer Exam

~50

Exam Questions

Sophos

80%

Passing Score

Sophos (typical)

60 min

Exam Duration

Sophos

$100

Exam Fee

Sophos (or free with training)

2-3 yr

Validity

Sophos

Engineer

Certification Level

Sophos

The Sophos Certified Engineer — Sophos Firewall exam has approximately 50 questions in 60 minutes with an 80% passing score. It tests SFOS 20+ fundamentals: the initial wizard, zones (LAN, WAN, DMZ), interfaces (physical, LAG, VLAN, bridge, TAP), firewall rules, NAT, basic IPsec and SSL VPN, IPS, web protection with SSL/TLS deep packet inspection, application control, authentication with STAS and Kerberos SSO, and wireless AP registration. Typically $100 USD or free with training.

Sample Sophos Firewall Engineer Practice Questions

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1Which Sophos Firewall zone is typically assigned to interfaces facing the internal trusted network?

A.WAN

B.LAN

C.DMZ

D.VPN

Explanation: The LAN zone is Sophos Firewall's pre-defined zone for internal trusted networks. WAN is for internet-facing interfaces, DMZ for semi-trusted servers, and VPN is a logical zone for VPN-originated traffic. Custom zones can also be defined.

2Which Sophos Firewall zone is used for interfaces connected to the internet?

A.LAN

B.WAN

C.DMZ

D.Wi-Fi

Explanation: The WAN zone is assigned to internet-facing interfaces, defining the 'untrusted' boundary for firewall policy. LAN is internal, DMZ is for semi-trusted servers, and Wi-Fi is a zone for wireless clients in some designs.

3Which interface type on Sophos Firewall logically combines multiple physical interfaces for increased throughput?

A.VLAN sub-interface

B.Bridge

C.LAG (Link Aggregation Group)

D.TAP

Explanation: LAG (Link Aggregation Group) combines multiple physical interfaces into one logical link for increased throughput and redundancy using 802.3ad (LACP) or static aggregation. VLAN sub-interfaces slice a single interface, Bridge interfaces merge multiple ports at L2, and TAP is passive inspection.

4Which interface type on Sophos Firewall allows the appliance to pass traffic at Layer 2 without becoming the default gateway?

A.Bridge

B.VLAN

C.Static route

D.WAN

Explanation: A Bridge interface operates at Layer 2, merging multiple physical ports into one broadcast domain so the firewall inspects traffic without being the L3 gateway. VLAN sub-interfaces and WAN are L3, and static routes are routing entries, not interface types.

5What is the correct evaluation order of Sophos Firewall rules?

A.Alphabetical by name

B.Top-down until the first match

C.Random

D.By creation date

Explanation: Sophos Firewall evaluates rules top-down and stops at the first match. That is why rule order matters — specific rules belong above broader ones. Alphabetical, random, or creation-date ordering are not how evaluation works.

6Which firewall rule action allows traffic and enables Sophos to scan it for threats?

A.Drop with logging

B.Accept

C.Reject

D.Tap only

Explanation: The Accept action forwards the traffic and — if configured — enables scanning (IPS, web, email, application control). Drop silently discards, Reject sends a TCP RST or ICMP unreachable, and there is no 'Tap only' rule action.

7Which NAT type automatically translates source IP addresses based on the firewall rule's outbound interface?

A.Automatic NAT (SNAT based on outbound interface)

B.Destination NAT

C.Port Forwarding

D.Linked NAT

Explanation: Automatic/MASQ source NAT in Sophos Firewall rewrites source IP to the outbound interface's IP automatically — common for internet-bound traffic. Destination NAT rewrites the destination, Port Forwarding is a type of DNAT to specific ports, and Linked NAT chains NAT to a specific rule.

8Which Sophos Firewall VPN option is typically used for remote-user access without deploying a VPN client?

A.Clientless SSL VPN portal

B.IPsec site-to-site

C.L2TP

D.PPTP

Explanation: Clientless SSL VPN provides browser-based access to internal applications (HTTP(S), RDP, VNC) without a client install. IPsec site-to-site connects networks, not individual users clientlessly, and L2TP/PPTP always require a client.

9Which VPN protocol should a new deployment prefer over PPTP?

A.IPsec / SSL VPN / L2TP-over-IPsec

B.PPTP over the internet

C.Telnet

D.SMB

Explanation: PPTP is considered obsolete and insecure — Sophos deprecates it. Modern deployments use IPsec, SSL VPN, or L2TP-over-IPsec. Telnet and SMB are not VPN protocols.

10Which Sophos Firewall feature classifies and controls traffic based on the application (e.g., BitTorrent, Facebook)?

A.Application Control

B.DHCP

C.OSPF

D.Kerberos SSO

Explanation: Application Control identifies thousands of apps at Layer 7 using signatures and DPI, allowing policies like 'block BitTorrent' or 'limit Facebook'. DHCP, OSPF, and Kerberos SSO serve other purposes.

About the Sophos Firewall Engineer Exam

The Sophos Certified Engineer — Sophos Firewall exam validates foundational skills with Sophos Firewall OS (SFOS 20+), including initial setup, zones and interfaces, firewall rules, NAT, IPsec/SSL VPN, IPS, web protection, application control, authentication (STAS), and wireless management.

Questions

50 scored questions

Time Limit

60 minutes

Passing Score

80%

Exam Fee

$100 (Sophos / Sophos Partner Portal)

Sophos Firewall Engineer Exam Content Outline

20%

Zones, Interfaces & Routing

Initial wizard setup, zones (LAN, WAN, DMZ, custom, Policy Objects), interfaces (physical, LAG, VLAN, bridge, wireless, TAP), and basic routing (static, RIP, OSPF, BGP intro)

20%

Firewall Rules & NAT

Firewall rules (source, destination, services, action, routing action, logging, schedule), automatic NAT, linked NAT, source/destination NAT, and Load Balancing NAT

15%

VPN

Site-to-site IPsec VPN wizard, remote access SSL VPN, L2TP, and deprecated PPTP

15%

Web & Application Protection

IPS policies and custom signatures, web categories, URL groups, exceptions, authenticated browsing, SSL/TLS deep packet inspection, application control, and custom app signatures

15%

Authentication

Local users, AD/LDAP/RADIUS/eDirectory, Kerberos SSO, STAS (Sophos Transparent Authentication Suite), captive portal, and the client authentication agent

15%

Wireless, Email & Operations

Wireless (AP registration, SSIDs, client limits), Email Protection (MTA, Anti-Spam, DLP), reports, backup/restore, OTA firmware updates, CCC console, and packet capture troubleshooting

How to Pass the Sophos Firewall Engineer Exam

What You Need to Know

Passing score: 80%
Exam length: 50 questions
Time limit: 60 minutes
Exam fee: $100

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

Sophos Firewall Engineer Study Tips from Top Performers

1Understand the firewall rule evaluation order — top-down matching with implicit deny at the end, and how NAT interacts with rules

2Master the NAT types — automatic NAT, linked NAT, source NAT, destination NAT, and Load Balancing NAT scenarios

3Know STAS (Sophos Transparent Authentication Suite) — how it maps Windows logins to firewall users without client software

4Practice the site-to-site IPsec VPN wizard and SSL VPN remote access configuration — these appear heavily on the exam

5Understand SSL/TLS deep packet inspection — certificate handling, exceptions for pinned apps, and privacy implications

Frequently Asked Questions

What is the Sophos Certified Engineer — Sophos Firewall exam?

It is an engineer-level certification validating foundational Sophos Firewall administration skills. It covers SFOS 20+ zones, interfaces, firewall rules, NAT, IPsec/SSL VPN, IPS, web protection, application control, authentication with STAS, and wireless. It follows the ET15/ET80 training series for Sophos Firewall.

How many questions are on the exam?

The exam has approximately 50 multiple-choice questions in 60 minutes with a passing score of 80%. It is typically delivered online through the Sophos Partner Portal after completing the Engineer training course.

Should I take this before the Architect exam?

Yes. The Engineer certification is the foundation for the Architect certification. Engineer covers core firewall administration (zones, rules, NAT, basic VPN). Architect adds HA, BGP, ZTNA, SD-WAN, WAF, Sandstorm, and multi-firewall management. Most candidates complete Engineer first.

How much does the Engineer exam cost?

The Engineer exam is typically $100 USD or included free with the Engineer training course via the Sophos Partner Portal. Pricing can depend on partner status. Confirm current fees at training.sophos.com.

How long is the Engineer certification valid?

Sophos Engineer certifications are typically valid for 2-3 years. Recertification is required when major SFOS versions change (e.g., SFOS 20 to 21) or when the training course is updated. Always verify current validity on training.sophos.com.

What topics should I focus on?

Focus on firewall rule matching order and logging, NAT types (automatic, linked, source/destination, Load Balancing NAT), site-to-site IPsec wizard, SSL VPN remote access, STAS for transparent authentication, SSL/TLS deep packet inspection, and initial wizard setup.