Ethical Hacking

Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package.
Computer Forensics Training at InfoSec Institute

Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors.




Network Security Secure-Shell
[Top] [All Lists]

Re: Ssh hangs after authentication

Subject: Re: Ssh hangs after authentication
Date: Thu, 25 Aug 2005 09:52:22 +1000
Adam Kerrison wrote:
I'm having trouble with openssh when connecting from my Mac OS X (Tiger)
laptop at home to a Linux server in my office. When I'm in the office
everything works fine, when I'm at home the ssh connection just hangs.
I have an ADSL router at home which acts as a Firewall with NAT but I don't
believe the problem is there (see below). Also from home I have to use a
CiscoVPN but again I don't think that's the problem.

Sounds like this: http://www.snailbook.com/faq/mtu-mismatch.auto.html

"My SSH session hangs part way through logging on, when I generate a lot
of output from my shell, try to scp or sftp a file, or attempt to run an
X11 application. I have a firewall, NAT or packet filter..."

[...]
Now the final twist: If I use PuTTY from a Windows machine at home it works
fine. I have now downloaded and tried the Mac OS X version of PuTTY and that
also works!

Different network parameters on each box (eg interface MTU, path MTU
discovery) may cause them to behave differently.

-- 
Darren Tucker (dtucker at zip.com.au)
GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4  37C9 C982 80C7 8FF4 FA69
    Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.

<Prev in Thread] Current Thread [Next in Thread>