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The Keys to Using SSH
The Keys to Using SSH David Tomaschik RHCE, LPIC-1 System Administrator, Kennesaw State University MSCS Student, SPSU [email protected] http://systemoverlord.com Special ALE Central Edition! What is SSH? ● SSH = Secure Shell ● Originally intended as “Encrypted Telnet” ● Allows remote shell (command-line) access ● Connection Encrypted Using Public Key Cryptography ● SSH Version 1: Developed 1995, Now Insecure ● SSH Version 2: Standardized 2006 ● Only use SSH2! Why use SSH? ● Useful for remote system administration ● Transfer files securely ● Run remote applications ● Secure OTHER communications ● Requires Little Bandwidth ● Industry Standard SSH Clients ● Linux: OpenSSH; Usually Installed by Default ● OS X: OpenSSH; Installed by Default ● Windows: PuTTY, OpenSSH under Cygwin, Commercial SSH ● Android: ConnectBot + Others ● IOS: iSSH, Prompt, Others About the Presentation ● Assumes OpenSSH on Linux for both Client and Server ● Some features may require relatively recent versions of OpenSSH Basic Use ● ssh [email protected] Basic Use ● ssh [email protected] Verifying Who You're Connecting To ● The highlighted lines show you which host you are connecting to along with the key fingerprint. ● The key fingerprint is cryptographic proof that your connection is not being tampered with. ● Depending on your level of paranoia: ● Get the fingerprint from the system administrator ● Make your first connection from a 'trusted' network ● Just ignore it and hope its ok What You Can Do Now ● Run Commands Remotely ● Install packages/services ● Configure -
Secure Shell Encrypt and Authenticate Remote Connections to Secure Applications and Data Across Open Networks
Product overview OpenText Secure Shell Encrypt and authenticate remote connections to secure applications and data across open networks Comprehensive Data security is an ongoing concern for organizations. Sensitive, security across proprietary information must always be protected—at rest and networks in motion. The challenge for organizations that provide access to applications and data on host systems is keeping the data Support for Secure Shell (SSH) secure while enabling access from remote computers and devices, whether in a local or wide-area network. ™ Strong SSL/TLS OpenText Secure Shell is a comprehensive security solution that safeguards network ® encryption traffic, including internet communication, between host systems (mainframes, UNIX ™ servers and X Window System applications) and remote PCs and web browsers. When ™ ™ ™ ™ Powerful Kerberos included with OpenText Exceed or OpenText HostExplorer , it provides Secure Shell 2 (SSH-2), Secure Sockets Layer (SSL), LIPKEY and Kerberos security mechanisms to ensure authentication security for communication types, such as X11, NFS, terminal emulation (Telnet), FTP support and any TCP/IP protocol. Secure Shell encrypts data to meet the toughest standards and requirements, such as FIPS 140-2. ™ Secure Shell is an add-on product in the OpenText Connectivity suite, which encrypts application traffic across networks. It helps organizations achieve security compliance by providing Secure Shell (SSH) capabilities. Moreover, seamless integration with other products in the Connectivity suite means zero disruption to the users who remotely access data and applications from web browsers and desktop computers. Secure Shell provides support for the following standards-based security protocols: Secure Shell (SSH)—A transport protocol that allows users to log on to other computers over a network, execute commands on remote machines and securely move files from one machine to another. -
Telnet Client 5.11 Ssh Support
TELNET CLIENT 5.11 SSH SUPPORT This document provides This document describes how to install and configure SSH support in Wavelink Telnet Client 5.11. information on the SSH support available in Telnet Client 5.11 OVERVIEW OF SSH SUPPORT Secure Shell (SSH) is a protocol developed for transmitting private information over the Internet. SSH OVERVIEW encrypts data that is transferred over the Telnet session. • Overview of SSH The Telnet Client supports SSH version 1 and 2 and will automatically select the most secure protocol Support that the SSH server supports. • Installing Windows SSH Support This document describes the following: • Configuring the host • Installing Windows SSH support utility profile for SSH • Configuring the host profile for SSH support support • Deploying Windows • Deploying Windows SSH support to the device through Avalanche or ActiveSync SSH Support • Revision History INSTALLING WINDOWS SSH SUPPORT Installing SSH support is a two-step process. First, install SSH support on the PC from which you will deploy Telnet. Once you install SSH support on the PC, use Avalanche or ActiveSync to deploy the utility to the device. To install SSH support on your PC: 1. Obtain the installation executable for SSH support. NOTE: To obtain the Wavelink SSH support utility install, go to http://www.wavelink.com/downloads/ files/sshagreement.aspx. 2. Install SSH support on the PC from which you will deploy the Telnet Client. CONFIGURING THE HOST PROFILE FOR SSH SUPPORT SSH support is configured from the Host Profiles window of the configuration utility. NOTE: SSH is only an active option if SSH support has been installed on the PC running the Telnet Client configuration utility. -
Remote Cellular TCP/IP Access to Rockwell Ethernet and Serial Devices
Remote Cellular TCP/IP to Rockwell Devices Remote Cellular TCP/IP Access to Rockwell Ethernet and Serial Devices Keywords: Cellular, SLC5/05, ControlLogix, MicroLogix Abstract: This document describes how to set up the Digi Connect™ WAN products (Digi Connect WAN, Digi Connect WAN RG, and Digi Connect WAN VPN) for remote cellular TCP/IP access to Rockwell equipment, such as the PLC5E, SLC5/05, ControlLogix, and MicroLogix. The Digi Connect WAN Family functions much like a home DSL/Cable modem, except the connection is by digital cellular signals such as GSM or CDMA. This enables wireless “Ethernet” solutions on a metro, regional, or global scale. 1 Introduction 1.1 Example Application To illustrate the use of Digi Connect WAN products with your Rockwell equipment, consider the following example: Key Features: The Digi Connect WAN product used with your Rockwell equipment provides several key features: • Provides outgoing Network-Address-Translation (NAT) and incoming TCP/UDP port forwarding. Some models act as VPN end-point. • Maintains an always-up IP connection, either on either the public Internet or by customized private networks established through your cellular carrier. • Being IP-based, all common Ethernet protocols can be used concurrently, including HTTP (Web browsing), ODVA Ethernet/IP, CSPv4, and Modbus/TCP. PN: 90000772_A http://www.digi.com/support/ia Page 1 of 37 Remote Cellular TCP/IP to Rockwell Devices • Existing applications, such as RSLinx, RSLogix and OPC, can be configured to access the field equipment through existing corporate LAN connections. • Intelligent field devices can use IP-based protocols to send email, file updates, or report-by-exception notifications. -
Portproxy User's Guide
portproxy User©s Guide Author: Tomasz Mrugalski version 2009-10-22 Table of contents 1 Project overview...............................................................................................................................4 1.1 Phase 1: Portproxy.....................................................................................................................4 1.2 Phase 2: Port forwarding GUI..................................................................................................4 2 Project status.....................................................................................................................................4 2.1 Phase 1: portproxy.....................................................................................................................4 2.2 Phase 2: Port forwarding GUI...................................................................................................4 2.3 Revision history........................................................................................................................4 3 Portproxy overview...........................................................................................................................5 4 Compilation......................................................................................................................................5 4.1 OpenWRT compilation.............................................................................................................5 4.2 MiniUPNP daemon...................................................................................................................6 -
Secure Shell- Its Significance in Networking (Ssh)
International Journal of Application or Innovation in Engineering & Management (IJAIEM) Web Site: www.ijaiem.org Email: [email protected] Volume 4, Issue 3, March 2015 ISSN 2319 - 4847 SECURE SHELL- ITS SIGNIFICANCE IN NETWORKING (SSH) ANOOSHA GARIMELLA , D.RAKESH KUMAR 1. B. TECH, COMPUTER SCIENCE AND ENGINEERING Student, 3rd year-2nd Semester GITAM UNIVERSITY Visakhapatnam, Andhra Pradesh India 2.Assistant Professor Computer Science and Engineering GITAM UNIVERSITY Visakhapatnam, Andhra Pradesh India ABSTRACT This paper is focused on the evolution of SSH, the need for SSH, working of SSH, its major components and features of SSH. As the number of users over the Internet is increasing, there is a greater threat of your data being vulnerable. Secure Shell (SSH) Protocol provides a secure method for remote login and other secure network services over an insecure network. The SSH protocol has been designed to support many features along with proper security. This architecture with the help of its inbuilt layers which are independent of each other provides user authentication, integrity, and confidentiality, connection- oriented end to end delivery, multiplexes encrypted tunnel into several logical channels, provides datagram delivery across multiple networks and may optionally provide compression. Here, we have also described in detail what every layer of the architecture does along with the connection establishment. Some of the threats which Ssh can encounter, applications, advantages and disadvantages have also been mentioned in this document. Keywords: SSH, Cryptography, Port Forwarding, Secure SSH Tunnel, Key Exchange, IP spoofing, Connection- Hijacking. 1. INTRODUCTION SSH Secure Shell was first created in 1995 by Tatu Ylonen with the release of version 1.0 of SSH Secure Shell and the Internet Draft “The SSH Secure Shell Remote Login Protocol”. -
Networking Telnet
IBM i Version 7.2 Networking Telnet IBM Note Before using this information and the product it supports, read the information in “Notices” on page 99. This edition applies to IBM i 7.2 (product number 5770-SS1) and to all subsequent releases and modifications until otherwise indicated in new editions. This version does not run on all reduced instruction set computer (RISC) models nor does it run on CISC models. This document may contain references to Licensed Internal Code. Licensed Internal Code is Machine Code and is licensed to you under the terms of the IBM License Agreement for Machine Code. © Copyright International Business Machines Corporation 1998, 2013. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Telnet................................................................................................................... 1 What's new for IBM i 7.2..............................................................................................................................1 PDF file for Telnet........................................................................................................................................ 1 Telnet scenarios...........................................................................................................................................2 Telnet scenario: Telnet server configuration.........................................................................................2 Telnet scenario: Cascaded Telnet -
Wing How to Guide
Configuration Guide for RFMS 3.0 Initial Configuration XXX-XXXXXX-XX WiNG5 How-To Guide Network Address Translation July 2011 Revision 1.0 MOTOROLA and the Stylized M Logo are registered in the US Patent & Trademark Office. Symbol is a registered trademark of Symbol Technologies, Inc. All other product or service names are the property of their respective owners. © 2011 Motorola, Inc. All rights reserved. WiNG5 – Network Address Translation How-To Guide Table of Contents 1. Introduction: ...............................................................................................................................................4 1.1 Overview:............................................................................................................................................4 1.2 Applications: .......................................................................................................................................5 1.3 Restrictions: ........................................................................................................................................5 2. Pre‐Requisites: ............................................................................................................................................6 2.1 Requirements: ....................................................................................................................................6 2.2 Components Used:..............................................................................................................................6 -
SOCKS Protocol Version 6
SOCKS Protocol Version 6 draft-olteanu-intarea-socks-6-08 Vladimir Olteanu IETF 106 What’s new ● DNS provided by SOCKS ● Options for Happy Eyeballs at the proxy Clients need DNS-like features ● A and AAAA – LD_PRELOAD for non-SOCKS-aware apps: gedaddrinfo() separate from connect() – Happy Eyeballs: need to do queries separately ● TXT – ESNI ● MX, Service Binding, etc. – <Insert future use case here> Providing DNS-like features ● Individual SOCKS options (removed in -08) – Have to keep up with use cases – Duplicate DNS functionality – Until -07: A, AAAA, PTR ● Having the client use DNS – Hard to convey policies: resolver IPs, plaintext / over TLS / over HTTPS etc., maybe credentials, etc. – Provide a DNS proxy Why not separate DNS from SOCKS? Client Proxy Server HTTP/SOCKS :1080 HTTP :80 DNS :53 Why not separate DNS from SOCKS? Client Proxy Server HTTP/SOCKS :1080 HTTP :80 DNS :53 WHICH TOR CIRCUIT? ● Need context for DNS query – Otherwise: privacy leaks, suboptimal CDN use DNS provided by SOCKS ● Clients make CONNECT request to 0.0.0.0:53 – Proxy needn’t provide a valid bind address ● Plaintext DNS over SOCKS (opt. over TLS) – TCP by default: SOCKS + UDP more cumbersome to use ● Implementation in Sixtysocks – Run separate DNS proxy locally – Translate 0.0.0.0:53 to 127.0.0.1:53 Happy Eyeballs ● RFC 8305: resolve and connect to a server using both IPv4 and IPv6, keep only one connection – Failover from IPv6 to IPv4 – Better responsiveness if one is faster ● Clients can implement Happy Eyeballs locally – Have DNS + CONNECT Happy Eyeballs: -
New Techniques to Enhance the Capabilities of the Socks Network Security Protocol
NEW TECHNIQUES TO ENHANCE THE CAPABILITIES OF THE SOCKS NETWORK SECURITY PROTOCOL Mukund Sundararajan and Mohammad S. Obaidat Computer Science Department, Monmouth University, West Long Branch, NJ, U.S.A. Keywords: Security protocols for computer networks, SOCKS, telecommunications, multicast, UDP tunneling. Abstract: SOCKS is an industry standard network security protocol used in private networks to allow secure traversal of application layer traffic through the boundaries of the network. Standardized by IETF in Request for Comments (RFC) 1928 (Leech et al., 1996) as SOCKS Version 5, this protocol has found widespread use in various security frameworks to allow a variety of application layer protocols to securely traverse a firewall. This paper is the result of research performed on the usability of the protocol in application domains such as multicast. We discuss some of the shortcomings of the SOCKS protocol and provide a framework and the methods for enhancing the capabilities of the protocol in areas such as multicast and advanced TCP and UDP capabilities not addressed by the current standard of the protocol. The methods proposed are being implemented in a reference implementation by the authors. 1 INTRODUCTION Operating in a client server mode, application nodes or computers within a SOCKS protected In today’s global and geographically dispersed network are ‘socksified’ by a socks client library that organizational world, network security is a key provides a transparent abstraction layer between the concern to organizations and individuals. With application and the kernel socket library and hides advances in technology, most of today’s the implementation details of the socks protocol from organizations have their key resources and data the application. -
Nokia HA-140W-B
Port forwarding for Nokia HA-140W-B Port forwarding can be used to establish a home-based FTP server, web server or similar kind of a server. The server is located on the LAN client (e.g. desktop computer or laptop). To set up Port forwarding, log into your router and go to Application > Port Forwarding. See image 1. Image 1. Port forwarding configured with port mapping (WAN port maps to LAN port) To set a specific port forwarding rule, select Custom settings for Application Name line. In the WAN Port field, set an arbitrary port on WAN interface of a router (e.g. TCP port 12001). All requests coming to the server from the internet side will have a destination IP address of the router itself, and a destination port as listed in WAN Port fields. For LAN port fields, list the port on which the LAN client server app is running (in this case TCP port 8008). Select the appropriate LAN client (server machine) from the dropdown menu on Internal Client. Protocol is determined by the type of server application (in this case TCP). Tick Enable Mapping and click Add to save the rule. Once the rule is saved, you’ll see the confirmation (see image 2). 1 Image 2. Port forwarding rule confirmation Similarly, ports on WAN and LAN side can be kept the same (see image 3). Image 3 shows the second way things can be configured. It’s up to you whether you prefer to use the methods in image 1 or image 3. Image 3. -
NBAR2 Standard Protocol Pack 1.0
NBAR2 Standard Protocol Pack 1.0 Americas Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 527-0883 © 2013 Cisco Systems, Inc. All rights reserved. CONTENTS CHAPTER 1 Release Notes for NBAR2 Standard Protocol Pack 1.0 1 CHAPTER 2 BGP 3 BITTORRENT 6 CITRIX 7 DHCP 8 DIRECTCONNECT 9 DNS 10 EDONKEY 11 EGP 12 EIGRP 13 EXCHANGE 14 FASTTRACK 15 FINGER 16 FTP 17 GNUTELLA 18 GOPHER 19 GRE 20 H323 21 HTTP 22 ICMP 23 IMAP 24 IPINIP 25 IPV6-ICMP 26 IRC 27 KAZAA2 28 KERBEROS 29 L2TP 30 NBAR2 Standard Protocol Pack 1.0 iii Contents LDAP 31 MGCP 32 NETBIOS 33 NETSHOW 34 NFS 35 NNTP 36 NOTES 37 NTP 38 OSPF 39 POP3 40 PPTP 41 PRINTER 42 RIP 43 RTCP 44 RTP 45 RTSP 46 SAP 47 SECURE-FTP 48 SECURE-HTTP 49 SECURE-IMAP 50 SECURE-IRC 51 SECURE-LDAP 52 SECURE-NNTP 53 SECURE-POP3 54 SECURE-TELNET 55 SIP 56 SKINNY 57 SKYPE 58 SMTP 59 SNMP 60 SOCKS 61 SQLNET 62 SQLSERVER 63 SSH 64 STREAMWORK 65 NBAR2 Standard Protocol Pack 1.0 iv Contents SUNRPC 66 SYSLOG 67 TELNET 68 TFTP 69 VDOLIVE 70 WINMX 71 NBAR2 Standard Protocol Pack 1.0 v Contents NBAR2 Standard Protocol Pack 1.0 vi CHAPTER 1 Release Notes for NBAR2 Standard Protocol Pack 1.0 NBAR2 Standard Protocol Pack Overview The Network Based Application Recognition (NBAR2) Standard Protocol Pack 1.0 is provided as the base protocol pack with an unlicensed Cisco image on a device.