Samsung iES4028F User Manual (English)

lunathomasAug 15, 2025

What to do if I cannot connect to my Samsung iES4028F Network Router using Secure Shell?

U
usmithAug 15, 2025
If you're having trouble connecting to your Samsung Network Router using Secure Shell (SSH), consider the following: * You may have exceeded the maximum number of concurrent Telnet/SSH sessions permitted. Try connecting again later. * Ensure the SSH server's control parameters are properly configured on the switch, and that the SSH client software is correctly configured on your management station. * Verify that you've generated both an RSA and DSA public key on the switch, exported this key to the SSH client, and enabled SSH service. * Confirm you've set up an account on the switch for each SSH user, including username, authentication level, and password. * If using public key authentication, be sure you've imported the client's public key to the switch.

Model	iES4028F
MAC Address Table Size	8K
Wireless	No
VPN Support	No
Firewall	No
QoS	Supported
Device Type	Managed Industrial Ethernet Switch

Model

iES4028F

MAC Address Table Size

Wireless

VPN Support

Firewall

QoS

Supported

Device Type

Managed Industrial Ethernet Switch

Summary

Chapter 1: Introduction

Key Features

Overview of the switch's key features, including Power over Ethernet, security measures, and supported protocols.

Description of Software Features

Details advanced performance features like flow control, broadcast storm suppression, and VLAN support.

Chapter 2: Initial Configuration

Connecting to the Switch

Describes the options for connecting to the switch via console, Telnet, or web interface.

Required Connections

Details the necessary hardware and software setup for connecting to the switch's console port.

Remote Connections

Explains how to access the switch's onboard agent via network connection using IP parameters.

Basic Configuration

Covers CLI program command levels (Normal Exec and Privileged Exec) and user access control.

Setting Passwords

Guides on setting new passwords for default user names to prevent unauthorized access.

Setting an IP Address

Explains how to establish IP address information for management access through the network.

Enabling SNMP Management Access

Describes how to configure the switch to accept management commands from SNMP applications.

Chapter 3: Configuring the Switch

Using the Web Interface

Describes how to configure and view statistics using the switch's embedded HTTP web agent.

Navigating the Web Browser Interface

Explains how to access the web-browser interface by entering user name and password.

Main Menu

Provides access to system parameters, port management, switch control, and network monitoring via the web agent.

Port Configuration

Commands for displaying connection status, speed/duplex, flow control, and auto-negotiation on ports.

Spanning Tree Algorithm Configuration

Configures STP, RSTP, or MSTP protocols to detect loops and provide backup links.

VLAN Configuration

Commands for isolating broadcast traffic, organizing network nodes into separate broadcast domains, and VLAN tagging.

Multicast Filtering Commands

Controls multicast traffic forwarding by using IGMP snooping and query.

Quality of Service Commands

Configures QoS classification criteria and service policies for prioritizing network resources.

Chapter 4: Command Line Interface

Accessing the CLI

Explains how to access the management interface via console port or Telnet connection.

Console Connection

Details the steps to access the switch through the console port using a terminal emulation program.

Telnet Connection

Explains how to open a Telnet session to access the switch using its IP address.

Entering Commands

Describes how to enter CLI commands using keywords, arguments, and command completion.

Command Groups

Breaks down system commands into functional groups like General, System Management, and Authentication.

General Commands

Covers basic commands for entering privileged mode, restarting the system, and quitting the CLI.

Debug Commands

debug dot1x

Configures debug settings for IEEE 802.1X authentication processes.

debug radius

Configures debug settings for RADIUS processes.

debug tacacs

Configures debug settings for TACACS processes.

SNMP Commands

snmp-server

Enables the SNMPv3 engine and services for all management clients (versions 1, 2c, 3).

show snmp

Checks the status of SNMP communications, including agent status and communities.

snmp-server community

Defines SNMP v1 and v2c community access strings for read-only or read/write access.

snmp-server host

Specifies the recipient of SNMP notification operations (traps or informs).

Authentication Commands

User Account Commands

Configures basic user names and passwords for management access and authentication.

Authentication Sequence

Defines the login authentication method and precedence (local, RADIUS, TACACS).

RADIUS Client

Details the configuration for remote authentication using RADIUS servers for access control.

TACACS+ Client

Details the configuration for remote authentication using TACACS+ servers for access control.

Configuring Encryption Keys

Provides a central location for managing RADIUS and TACACS+ server encryption keys.

AAA Authorization and Accounting

Configures AAA for access control, providing authentication, authorization, and accounting.

Configuring HTTPS

Enables Secure Hypertext Transfer Protocol (HTTPS) over SSL for secure web interface access.

Configuring the Secure Shell

Configures SSH server settings for secure remote access, supporting password and public key authentication.

Configuring 802.1X Port Authentication

Defines port-based access control that prevents unauthorized access by requiring user credentials.

General Security Measures

Private VLANs

Provides port-based security and isolation between ports within assigned VLANs.

Port Security Commands

Enables port security on a port, stopping learning new MAC addresses when a configured maximum is reached.

Network Access (MAC Address Authentication)

Controls network access by authenticating MAC addresses of hosts with a central RADIUS server.

Web Authentication

Allows stations to authenticate and access the network where 802.1X or Network Access are infeasible.

Access Control List Commands

Provides packet filtering for IP frames based on address, protocol, or Layer 4 port, or any frames based on MAC address.

DHCP Snooping Commands

Protects the network from rogue DHCP servers or devices by filtering IP traffic.

IP Source Guard Commands

Filters IP traffic on network interfaces based on static or dynamic entries.

Interface Commands

interface

Configures an interface type and enters interface configuration mode.

speed-duplex

Configures the speed and duplex mode of a given interface when autonegotiation is disabled.

negotiation

Enables autonegotiation for a given interface.

flowcontrol

Enables flow control.

shutdown

Disables an interface.

switchport packet-rate

Configures broadcast and multicast and unknown unicast storm control.

show interfaces status

Displays the status for an interface.

show interfaces switchport

Displays the administrative and operational status of the specified interfaces.

Samsung iES4028F User Manual

Table of Contents

Questions and Answers:

Samsung iES4028F Specifications