Hot Downloads

Welcome, Guest
Username: Password: Remember me
  • Page:
  • 1
  • 2

TOPIC: Reverse Telnet

Reverse Telnet 11 years 8 months ago #17264

Hi guys,

Could anyone explain
a. what is reverse telnet. where is it used.
b. NIC loopback Circuitry with regard to CSMA/CD.

Regards
Prasanna.B

Please Log in to join the conversation.

Re: Reverse Telnet 11 years 8 months ago #17266

  • S0lo
  • S0lo's Avatar
  • Offline
  • Moderator
  • Moderator
  • Posts: 1577
  • Karma: 3
  • Thank you received: 7

a. what is reverse telnet. where is it used.
Prasanna.B


Some info here

www.cisco.com/en/US/products/sw/iosswrel...9186a00800871ec.html

Please Log in to join the conversation.

Studying CCNP...

Ammar Muqaddas
Forum Moderator
www.firewall.cx

Re: Reverse Telnet 11 years 8 months ago #17298

  • Dove
  • Dove's Avatar
  • Offline
  • Distinguished Member
  • Distinguished Member
  • Posts: 198
  • Karma: 2
  • Thank you received: 1
Hi,
Reverse Telnet (sometimes called direct Telnet) is the initiation of a Telnet session from a computer system to one of its remote users. Usually, a Telnet session is initiated by a user who wishes to access and share resources on a remote computer system. The user must have permission and is prompted to provide a user name and password.
Reverse Telnet is typically used by a system administrator to configure or to troubleshoot a remote computer.

Please Log in to join the conversation.


Dove

NIC Loopback 11 years 8 months ago #17306

The NIC loopback circuitry is part of the CSMA/CD mechanism in that it allows the NIC to listen to the wire while transmitting so that it can detect collisions. Have a look at the following threads where it's been discussed before:
http://www.firewall.cx/ftopict-1964-nic.html+loopback
and
http://www.firewall.cx/ftopict-2875-nic.html+loopback

Please Log in to join the conversation.

Re: NIC Loopback 11 years 8 months ago #17309

  • Smurf
  • Smurf's Avatar
  • Offline
  • Moderator
  • Moderator
  • Posts: 1390
  • Karma: 1
  • Thank you received: 0

The NIC loopback circuitry is part of the CSMA/CD mechanism in that it allows the NIC to listen to the wire while transmitting so that it can detect collisions. Have a look at the following threads where it's been discussed before:
http://www.firewall.cx/ftopict-1964-nic.html+loopback
and
http://www.firewall.cx/ftopict-2875-nic.html+loopback


Brillient Bishop, very informative links thanks. I didn't understand the second part of the original question but it all makes sense now :) Long time since i read about CSMA/CD so all good refresh....

Please Log in to join the conversation.

Wayne Murphy
Firewall.cx Team Member
www.firewall.cx

Now working for a Security Company called Sec-1 Ltd in the UK, for any
Penetration Testing work visit www.sec-1.com or PM me for details.

Re: Reverse Telnet 11 years 8 months ago #17358

  • Smurf
  • Smurf's Avatar
  • Offline
  • Moderator
  • Moderator
  • Posts: 1390
  • Karma: 1
  • Thank you received: 0
Sorry to revive this thread but just reading my BCRAN book to get prepared for the exam and something doesn't add up

In Cisco speak, the reverse telnet means to setup a telnet session where you go down the serial connection to the remote device.

I.e. telnet ip linenumber

If you just telneted to to ip address, the router you were telnetting from who know where the IP Address was and go down the correct serial connection wouldn't it ?

Cheers

Please Log in to join the conversation.

Wayne Murphy
Firewall.cx Team Member
www.firewall.cx

Now working for a Security Company called Sec-1 Ltd in the UK, for any
Penetration Testing work visit www.sec-1.com or PM me for details.
  • Page:
  • 1
  • 2
Time to create page: 0.161 seconds

CCENT/CCNA

Cisco Routers

  • SSL WebVPN
  • Securing Routers
  • Policy Based Routing
  • Router on-a-Stick

VPN Security

  • Understand DMVPN
  • GRE/IPSec Configuration
  • Site-to-Site IPSec VPN
  • IPSec Modes

Cisco Help

  • VPN Client Windows 8
  • VPN Client Windows 7
  • CCP Display Problem
  • Cisco Support App.

Windows 2012

  • New Features
  • Licensing
  • Hyper-V / VDI
  • Install Hyper-V

Linux

  • File Permissions
  • Webmin
  • Groups - Users
  • Samba Setup