Network Troubleshooting
Diagnosing connectivity, routing, DNS, DHCP, VLAN, VPN and firewall-related issues to help restore reliable network operation.
Overview
Network problems can affect users, applications, remote connectivity and day-to-day business operations. Electroluxss provides practical network troubleshooting support to help investigate technical issues, identify likely root causes and support effective resolutions.
Our troubleshooting approach considers the complete network path rather than focusing only on the visible symptom. This can include reviewing connectivity, network configurations, routing behaviour, DNS responses, DHCP services, VLANs, VPN connections, firewall policies, logs and network traffic.
What We Troubleshoot
Connectivity Issues
Investigation of users or systems that cannot reach required devices, applications, services or network resources.
Routing Problems
Analysis of routing behaviour, network paths and connectivity between different network segments.
DNS Issues
Investigation of name-resolution problems that can prevent users and systems from reaching required services.
DHCP Issues
Troubleshooting problems involving IP address assignment, network configuration and client connectivity.
VLAN Problems
Investigation of communication issues involving VLAN configuration, segmentation and network connectivity.
VPN Problems
Troubleshooting remote-access and site-to-site VPN connectivity, authentication and traffic-related issues.
Firewall Issues
Investigation of blocked traffic, security policies, NAT behaviour and firewall-related connectivity problems.
Performance Problems
Analysis of network behaviour when users experience slow or unreliable connections and application performance issues.
Common Problems We Investigate
- Users unable to access internal applications
- Internet connectivity problems
- Intermittent network connectivity
- Routing and reachability issues
- DNS resolution failures
- DHCP address-assignment problems
- VLAN connectivity issues
- VPN connection failures
- Firewall traffic being blocked unexpectedly
- NAT-related connectivity problems
- Network performance and latency concerns
- Connectivity problems after configuration changes
Troubleshooting Approach
We begin by understanding the reported problem and affected systems. Relevant information can then be collected from network configurations, logs, connectivity tests and traffic observations. The available evidence is analysed to identify the likely cause, followed by appropriate troubleshooting actions and validation of the result.
Technical Areas
TCP/IP
Understanding IP addressing, ports, protocols and communication paths during network investigations.
Routing & Switching
Investigating network paths, routing behaviour and switching-related connectivity problems.
DNS & DHCP
Investigating name resolution and address-assignment issues affecting network access.
Firewall & VPN
Investigating security policies, NAT, VPN connectivity and traffic behaviour where appropriate.
Network Analysis
Where appropriate, troubleshooting can involve packet and traffic analysis to understand what is happening between communicating systems. This can help determine whether a problem is related to connectivity, routing, DNS, firewall policies, application behaviour or another part of the network path.
Why Effective Troubleshooting Matters
Fast identification of network problems can help reduce disruption to users and business applications. A structured troubleshooting process also helps avoid unnecessary configuration changes and provides a clearer understanding of the underlying issue.
The objective is not simply to restore connectivity, but to understand the cause of the problem and validate that the expected network behaviour has been restored.
Contact Electroluxss
Experiencing a network connectivity, routing, DNS, DHCP, VLAN, VPN or firewall-related issue? Contact Electroluxss to discuss your technical requirement and network troubleshooting needs.