0631 Network Administrator

You own the routing table. When a colonel’s command post loses connectivity during a live exercise, you figure out in minutes whether it is a layer 2 loop, a failed BGP neighbor, or a misconfigured access control list. The 0631 Network Administrator manages the local area networks and wide area networks that Marine units depend on for command and control, and the daily work looks more like a mid-level civilian network job than most enlisted specialties. If you want a technical MOS that translates directly into a hiring advantage when you separate, get your ASVAB CL or EL score above 105 before you sit down with a recruiter.

Job Role and Responsibilities

The 0631 Network Administrator installs, operates, and maintains Marine Corps local area networks and wide area networks to support command and control. Duties include routing and switching configuration, cybersecurity procedures, VPN management, traffic monitoring, bandwidth management, premise wiring, and technical-control site operations in both garrison and expeditionary environments.

Daily Tasks

In garrison, a 0631 Marine manages the network infrastructure at a communications hub or operations center. Morning starts with a network health check: verify uptime on critical links, review SNMP alerts, check bandwidth utilization on WAN connections, scan access logs for anomalies. If something is degraded, you diagnose and fix it before anyone notices the slowdown. Afternoons might be patch cycles, firewall rule reviews, or building out a new IP addressing scheme for an upcoming exercise.

In the field or on deployment, the pace changes completely. You are setting up networks in tents, vehicles, or temporary hardened facilities with whatever power is available. The network has to be functional before the command post is declared ready. There is no calling the help desk.

Day-to-day responsibilities include:

• Configuring and managing routers, switches, and firewalls using both commercial and military platforms
• Monitoring network performance and responding to outages and degradation
• Managing VPN tunnels, IPsec configurations, and secure communications paths
• Setting up and maintaining premise wiring and structured cabling at technical-control sites
• Conducting subnetting, IP address management, and traffic analysis
• Applying cybersecurity procedures including access control lists, patching, and log review
• Documenting network configurations, incident reports, and maintenance records

Specific Roles and MOS Codes

Mission Contribution

The Marine Air Ground Task Force coordinates fires, moves intelligence, sustains logistics, and maintains command authority through networks. A 0631 Marine keeps those networks running at the speeds and security levels the mission requires. When a network fails during an operation, fires can go uncoordinated, reports stop moving, and the command post becomes a room full of people waiting. The 0631 administrator is the Marine who prevents that failure and fixes it when prevention fails.

Technology and Equipment

0631 operators work with enterprise networking equipment including Cisco and military-grade routers and managed switches, firewalls, VPN appliances, and classified network management systems. You configure wireless access points, manage structured cabling and technical-control-facility interconnects, and work with both commercial off-the-shelf equipment adapted for military use and purpose-built tactical communications platforms. As the Marine Corps expands its network modernization programs, 0631 administrators increasingly work on software-defined networking architectures that will eventually replace legacy hardware.

Salary and Benefits

Financial Benefits

Pay is based on grade and time in service. The table below shows 2026 active-duty basic pay for the most common enlisted grades in this MOS.

Source: DFAS 2026 pay tables. Figures reflect the 2026 pay raise.

Enlistment bonuses for OccFld 06 vary by accession cycle. Verify current bonus availability with your recruiter at the time you enlist. The Secret clearance required for 0631 also adds civilian earning potential when you separate, particularly for defense contractor and government IT roles. Additional pay and allowances include:

• Basic Allowance for Subsistence (BAS): $476.95 per month for enlisted members
• Basic Allowance for Housing (BAH): varies by duty station, grade, and dependent status
• Tax exclusion on basic pay when deployed to a designated combat zone

Additional Benefits

TRICARE Prime covers active-duty Marines at no premium cost with no copay for medical, dental, vision, mental health, and prescriptions. Dependents are enrolled under the sponsor. The Post-9/11 GI Bill covers full in-state tuition at public universities or up to $29,920.95 per academic year at private schools, plus a monthly housing allowance tied to the school ZIP code and up to $1,000 annually for books. Tuition Assistance allows Marines to pursue college courses while on active duty, up to $4,500 per year with a per-credit-hour cap. The Blended Retirement System pairs a 20-year pension with Thrift Savings Plan contributions, including a government match of up to 5% of basic pay beginning in the third year of service.

Work-Life Balance

Marines accrue 30 days of paid leave per year (2.5 days per month) with a maximum carryover of 60 days. Operational tempo varies by unit type and assignment. A 0631 Marine in a garrison communications battalion works more predictable hours between exercises. One assigned to a deployable infantry regiment operates at a higher pace. Networks do not follow duty hours, which means after-hours network emergencies are a real part of the job even in garrison. Field exercises and deployments add sustained periods of irregular work.

Qualifications and Eligibility

Basic Qualifications

Your ASVAB line scores determine whether 0631 is an option in your contract. The CL (Clerical) and EL (Electronics Repair) composites are the relevant screens for OccFld 06. Scoring above the minimums gives you more options during contract discussions. Some applicants use the PiCAT as an unproctored prescreen before taking the required proctored verification test at MEPS.

The 0631 minimums are slightly higher than some other OccFld 06 MOS codes. That reflects the Corps’ expectation that network administrators configure complex systems independently and under operational pressure. A failed background investigation or ineligibility for a Secret clearance at MEPS will result in MOS reassignment.

Waivers are available for some disqualifying factors depending on the nature and recency of the issue.

Application Process

The process starts with the ASVAB or PiCAT, followed by MEPS for a physical exam and initial security screening. Your recruiter identifies MOS options based on your scores and current accession needs. You may receive an OccFld 06 field guarantee rather than the specific 0631 code in your initial contract. Processing time from first recruiter contact to ship date varies from a few weeks to several months depending on waivers, medical processing, and quota availability.

Selection Criteria and Competitiveness

0631 is moderately competitive. The Corps needs network administrators across garrison and deployable units consistently. Strong scores above the minimums, a clean background, and any prior IT exposure, including personal projects, community college coursework, or home lab work, reinforce your recruiter’s confidence in your aptitude. Prior certifications like CompTIA A+ or Network+ are not required but demonstrate genuine interest in the field.

Upon Accession

Marines enter at E-1 (Private) or E-2 (Private First Class) based on college credits, DEP participation time, or JROTC service. The standard active-duty enlistment is four years. A Reserve obligation may follow for some contracts.

Work Environment

Setting and Schedule

0631 Marines work in network operations centers, communications hubs, technical-control facilities, and in the field during exercises and deployments. Garrison work is largely indoors at climate-controlled networked facilities, which is one of the practical advantages of this MOS compared to field-heavy combat support jobs. Field operations mean setting up networks in tents, vehicles, or temporary structures where power, cooling, and physical security are all variables you have to solve at the same time.

Shift work is standard during major exercises and operational deployments because networks must stay up around the clock. Watch rotations during sustained operations can include overnight and weekend duty. Between major training events, garrison schedules return to more regular hours with on-call obligations.

Leadership and Communication

Network administrators work under NCO and SNCO supervision at the junior enlisted level. Daily communication involves tasking orders, incident reports, and maintenance documentation. Performance feedback is delivered through informal NCO counseling and formal proficiency and conduct marks for E-1 through E-6 Marines. Both marks are on a 0.0-5.0 scale and feed directly into the promotion process. SNCOs at E-7 and above receive fitness reports (FITREPs) with narrative and numerical peer comparisons that promotion boards use to evaluate advancement eligibility.

Team Dynamics and Autonomy

Most 0631 work is individual in the sense that one Marine owns a specific switch, router, or network segment and is accountable for its configuration and uptime. But the overall network is a collective product. A misconfigured route affects every hop downstream. A firewall rule change can block a service another section depends on. That interdependence requires documentation discipline and coordination before changes are pushed. Junior Marines execute task orders; experienced NCOs take on independent design decisions and complex troubleshooting that require judgment rather than just procedure.

Job Satisfaction and Retention

Marines who enjoy this work typically point to the visible application of technical skills, the fast feedback loop when a fix works, and the direct relevance to civilian IT careers. Common frustrations include managing equipment that is older than commercial equivalents, navigating change-management approval processes that can be slow, and the gap between what the MOS promises and the full operational tempo it imposes. Retention in the 06 field is steady. A significant number of 0631 Marines separate after their first enlistment to move into civilian IT roles, where their experience and clearance give them a real advantage.

Training and Skill Development

Initial Training

All 0631 Marines complete the same sequential pipeline.

The Marine Corps Communication-Electronics School (MCCES) at Twentynine Palms handles both the Basic Communications Course and the Network Administrator Course. The Basic Communications Course runs first for all 06-field Marines before specialization, so network administrators arrive in their MOS-specific course with a shared understanding of how networks fit into the larger communications architecture rather than the LAN side in isolation. The Network Administrator Course itself runs approximately 13 weeks and covers routing and switching configuration, VPN management, IPsec, cybersecurity fundamentals, and network management tools used in Marine Corps operational environments.

Plan for the full pipeline before you report to a unit. Boot Camp, MCT, and the MCCES courses together take roughly seven months. Twentynine Palms is geographically isolated and the training schedule is demanding. That is the reality for all OccFld 06 Marines regardless of MOS, and understanding it before you enlist helps you set realistic expectations for your first year in the Marine Corps.

Advanced Training

After initial qualification, 0631 Marines may attend the Network Supervisor Course that prepares senior operators for the 0639 Network Chief NMOS. Additional joint cybersecurity training, vendor-specific certification programs, and inter-service courses are available through command funding or voluntary education programs. Marines who demonstrate consistent technical aptitude and leadership performance may be selected for specialized network architecture or joint communications billets that expand exposure beyond what the initial schoolhouse covers.

Career Progression and Advancement

Career Path

Promotion follows time-in-grade and time-in-service criteria, with competitive boards controlling advancement to E-5 and above.

Staff Sergeant is reachable in roughly eight to ten years for Marines who earn additional MOS codes, maintain competitive proficiency and conduct marks, and perform well in deployable billets. The 0631 Marines who advance fastest document their technical qualifications, seek out additional schools proactively, and do not rely on supervisors to push them forward.

Specialization Options

• NMOS 0639: Network Chief (supervisory designation for senior operators)
• AMOS 0633: Network Transport Technician (intermediate technical specialty)
• Lateral movement toward OccFld 17 (Information Maneuver) cyber billets with separate screening requirements

Role Flexibility and Transfers

Marines may apply for a LATMOVE after completing their initial enlistment, subject to command endorsement and MOS availability. The natural technical affinity between the 06 and 17 fields means that some motivated 0631 Marines have transitioned into cyber operations roles. That path requires meeting screening requirements specific to those programs, which are separate from OccFld 06 entry requirements.

Performance Evaluation

Marines at E-1 through E-6 receive proficiency and conduct marks twice per year from their reporting senior. Both marks are on a 0.0-5.0 scale and feed directly into the promotion competitive file. SNCOs at E-7 and above receive fitness reports that include narrative performance assessments and numerical comparisons to peers in the same competitive category. Sustained above-average performance across multiple reporting seniors is the primary driver for reaching the SNCO grades.

Physical Demands and Medical Evaluations

Physical Requirements

0631 is less physically demanding than combat arms on a typical garrison day, but Marine physical standards apply regardless of MOS. Field exercises require moving network equipment transit cases that can weigh 50 pounds or more, setting up communications shelters, running cables in awkward spaces, and working through extreme heat or cold without the option of stopping because the network is needed. At Twentynine Palms, summer temperatures regularly exceed 110 degrees, and network setup happens outdoors regardless. Marines who arrive at a unit without solid physical fitness discover quickly that the PFT and CFT are not the actual physical challenge of the MOS. The PFT and CFT are required semi-annually at minimum scores for good standing, with first-class performance expected for promotion.

Verify current standards at marines.com before testing.

Medical Evaluations

MEPS screening establishes the initial medical baseline. Periodic health assessments and annual dental exams continue on active duty. Clearance reviews are ongoing and require reporting any significant change in financial status, criminal history, foreign contacts, or personal circumstances that could affect eligibility. Loss of clearance eligibility can result in MOS reassignment.

Deployment and Duty Stations

Deployment Details

0631 Marines deploy with the units they support, and those units go wherever the Marine Corps sends them. Networks must follow the force. A Marine assigned to a deployable regiment or MEU will spend time at sea aboard an amphibious ready group, conduct exercises ashore in the Pacific, Mediterranean, or other theaters, and return to home station after a rotation that typically runs six to seven months.

The pre-deployment workup period deserves attention. Before a MEU deploys, the communications section must build, test, and certify the network architecture the MEU will depend on at sea and ashore. That workup can run three to six months of increasingly demanding exercises. By the time you board the ship, you have already been working at a high operational pace for half a year. That reality changes how you should think about the total commitment of a deployable billet, beyond the float time itself.

Individual augmentation billets also send some 0631 Marines to joint task forces, combatant command exercises, or allied operations in addition to their parent-unit deployments.

Location Flexibility

Common duty stations for OccFld 06 network administrators include:

• Camp Pendleton, California (I MEF): West Coast hub for I MEF forces. San Diego metro proximity means strong BAH rates and good off-base living options, though the cost of housing is high relative to most other duty stations.
• Camp Lejeune, North Carolina (II MEF): Primary East Coast basing for Marine expeditionary and support forces. Jacksonville, NC provides basic services. BAH covers off-base housing at most grades, and the military spouse employment community is well established.
• MCAGCC Twentynine Palms, California: Home to the Marine Corps’ largest training area and a significant exercise footprint. Geographically isolated from major population centers, which is the main tradeoff. Single Marines can manage the isolation; families with school-age children or dual-career requirements face more real challenges there.
• Marine Corps Base Quantico, Virginia: Smaller installation near the DC area with the highest BAH rates in the Marine Corps. Spouse employment opportunities in the federal government and defense contracting sectors are among the best available at any Marine base.
• Okinawa, Japan (III MEF): Standard tours run twelve to eighteen months. Unaccompanied orders are common for junior Marines. III MEF operates across the Pacific, including exercises in Japan, South Korea, Australia, and the Philippines. High operational tempo is the norm.
• Marine Corps Base Hawaii (MCBH Kaneohe Bay): Small installation with high quality of life and some of the highest cost of living at any Marine installation. BAH rates reflect the Hawaii market, but families still face above-average out-of-pocket housing costs.

Assignments are billet-driven. Junior Marines submit preferences but have limited influence over their first posting. The ability to influence assignments increases significantly as you reach the NCO and SNCO grades and develop a relationship with your assignment monitor.

Risk, Safety, and Legal Considerations

Job Hazards

Network administrators work in lower-risk physical environments than combat arms on a typical garrison day, but real hazards exist across the job. Electrical safety is an active concern during infrastructure setup. Server and switching equipment operates at voltages that require proper grounding, lockout-tagout procedures, and awareness of electrical panel locations in any facility you are working in. Deployments to forward operating areas introduce the same physical risks any Marine faces downrange, including indirect fire, vehicle movement, and austere living conditions.

The legal hazards in this MOS come from its access to classified networks. A misconfiguration that exposes a classified network segment to an unclassified one is a reportable security incident. Unauthorized access to systems, failure to follow network access control policies, or mishandling of classified network documentation are all UCMJ matters with serious personal consequences.

Safety Protocols

Electrical safety standards and lockout-tagout procedures govern network equipment installation. Classified network material handling follows Marine Corps and DoD regulations enforced by the unit security manager. Physical security for network facilities includes access controls, visitor logs, and equipment accountability procedures. Cybersecurity violations are treated as UCMJ matters in serious cases, with the severity of consequence scaling with the classification level and operational impact of the incident.

Security and Legal Requirements

A Secret clearance is required at accession. Marines working in classified communications environments may be briefed at higher levels over time. The background investigation covers financial history, criminal record, employment history, and foreign contacts. The four-year enlistment is a binding legal contract. Non-judicial punishment and court-martial proceedings under the UCMJ apply to service members who violate their obligations.

Network administrators carry an ongoing personal responsibility to report changes in their situation that affect clearance eligibility. Financial problems, arrests, new foreign contacts, and marital changes involving foreign nationals all require prompt reporting to the unit security manager. Failure to self-report is treated as a separate violation that compounds the original issue. Marines who lose their clearance may be reassigned to a non-clearance billet or administratively separated if no suitable position exists.

Impact on Family and Personal Life

Family Considerations

A 0631 Marine in a deployable unit will spend significant time away from family through MEU rotations, field exercises, and workup training periods. The specific impact on family life varies sharply by duty station, and understanding the differences before submitting a preference is worth the research.

At Camp Lejeune, families benefit from a mature military support infrastructure, established school systems in Onslow County and surrounding areas, and reasonable BAH coverage for off-base housing. Spouse employment options in Jacksonville are decent, with access to healthcare, retail, and service sector jobs, though the options are narrower than in larger metros. At Quantico, the DC-area proximity makes spouse employment in the federal government and defense contracting fields genuinely strong, and BAH rates among the highest in the Corps make off-base housing affordable relative to area market rates.

At Twentynine Palms, families face the most challenging environment. The Inland Empire location is geographically isolated, and while schools serving the military community are functional, extracurricular and educational enrichment options are more limited than at coastal installations. Spouse employment in the 29 Palms area is the most constrained of any major Marine installation, which is a significant factor for dual-income families. BAH at E-4 and E-5 covers basic off-base housing in the area, but the selection is narrow and commute distances to Palm Springs or the greater Inland Empire can add logistical strain.

The Marine Corps provides support through Marine Corps Family Services, Military OneSource (free counseling, financial advice, and relocation resources), and MCCS programs at major installations. Family Readiness Officers maintain communication systems and help families find resources during deployments.

PCS moves average every two to three years and reset schools, community connections, and employment situations. Use the School Liaison Officer at the gaining installation to work through school enrollment and credit transfer requirements for children when relocating.

Relocation and Flexibility

Junior Marines have limited input into their first and second assignments. Senior NCOs and SNCOs develop more influence through the assignment monitor system as billets open up. Geographic stability improves at the SNCO level, where assignment cycles become somewhat more predictable and family considerations carry more weight in the monitor conversation.

Marine Corps Reserve

Component Availability

MOS 0631 is available in the Marine Corps Reserve. Reserve communications units at locations across the country include network administrator billets. Availability depends on the units near you and current open billets.

Drill Schedule and Training Commitment

Standard commitment is one drill weekend per month and two weeks of Annual Training per year. Communications units may add supplemental training days for annual network certifications, platform qualifications, or field exercises beyond the standard schedule depending on the unit’s readiness mission.

Part-Time Pay

An E-4 (Corporal) with less than two years of service earns $3,142.20 per month on active duty. Reserve drill pay is 1/30th of monthly active-duty base pay per drill period. Four drill periods in a standard weekend at E-4 under two years equals approximately $418.96 per drill weekend.

Benefits Differences

Deployment and Mobilization

Reserve 0631 Marines can be mobilized for contingency operations, exercises, or augmentation of active units. Mobilization periods typically run six to twelve months. Both voluntary and involuntary mobilization paths exist.

Civilian Career Integration

0631 reserve service pairs directly with civilian network administration work. The skills overlap is immediate and recognizable to civilian employers: routing, switching, VPN management, cybersecurity fundamentals, and network monitoring are skills that enterprise IT shops hire for consistently. Many reserve 0631 Marines hold civilian IT positions during the week. The active Secret clearance is a competitive advantage for defense contracting and government IT roles. USERRA protections require civilian employers to hold your position during mobilization and prohibit adverse employment action based on reserve status.

Post-Service Opportunities

Transition to Civilian Life

0631 has one of the clearest civilian-transfer profiles of any enlisted MOS in the Marine Corps. The daily work in this job maps directly to what network administrators do in corporate IT, federal agencies, and defense contractors. Routing, switching, firewall management, VPN configuration, and network monitoring are skills employers recognize without explanation or military translation.

Certifications accelerate that transition significantly. CompTIA Network+, Security+, and Cisco CCNA all have direct overlap with 0631 training content and are achievable while on active duty through Tuition Assistance or self-study. Marines who earn one or two of these certifications before separation compete at the same level as candidates with two to three years of civilian work experience.

The Transition Readiness Program helps Marines prepare federal resumes, practice interviews, and connect with employers before separation. VA education benefits can fund continued degree or certification work after you leave active duty.

U.S. Bureau of Labor Statistics, Occupational Outlook Handbook.

Certifications That Transfer

Several certifications align closely with 0631 training and are worth pursuing before separation:

• CompTIA Network+: Validates networking fundamentals that align directly with the Network Administrator Course content
• CompTIA Security+: Required by many DoD contractor roles; aligns with the cybersecurity components of 0631 training
• Cisco CCNA: Industry-standard networking certification valued in enterprise IT hiring
• CompTIA CySA+: Cybersecurity analyst certification that builds on Security+ for analysts and network security roles

Is This a Good Job for You? The Right (and Wrong) Fit

Ideal Candidate Profile

0631 is a strong match for Marines who:

• Score at or above 105 on the CL or EL ASVAB composite
• Want a technical MOS with direct civilian IT career transfer
• Can apply networking protocols systematically and document configurations carefully
• Are comfortable with procedural security requirements that govern every change they make
• Want to earn industry certifications while on active duty and enter the civilian IT market with a clearance advantage

Prior IT experience, home lab networking, or personal interest in how networks work is a plus. What the Corps actually screens for is aptitude and test score. The rest develops in training.

Potential Challenges

The gap between civilian network administration and the Marine version is real. Equipment is sometimes older than what enterprise IT shops use. Change management processes prioritize security and oversight over speed, which means tasks that take minutes in a commercial environment can require a week of approvals in a military one. Deployments and field exercises take you away from the server room into conditions where the work gets harder. Marines who want only comfortable indoor work with no field time will find the operational demands of this MOS surprising.

Long deployments and PCS moves are also factors to weigh if geographic stability is important to you.

Career and Lifestyle Alignment

0631 is a good fit if you want to start an IT career while serving and exit with direct civilian networking experience, a clearance, and certification momentum. It is less suited for Marines who dislike technical problem-solving, want to avoid deployments, or expect a purely predictable schedule without field requirements. The MOS rewards Marines who treat it as a foundation for a longer technology career rather than a four-year obligation to complete and exit.

This site is not affiliated with the U.S. Marine Corps or any government agency. Verify all information with official Marine Corps sources before making enlistment or career decisions.

More Information

Contact your nearest Marine Corps Recruiting Station (RSS) or speak with a recruiter to get current accession information for OccFld 06, including quota availability, bonus eligibility, and current ASVAB score requirements for 0631. Your recruiter can confirm what MOS contracts are available based on your current scores and the active accession cycle.

Explore more 06 Communications careers such as 0621 Transmissions System Operator and 0671 Data Systems Administrator.

Need score context? Review the ASVAB guide and the PiCAT guide before publishing permanent MOS content.