On Thu, 15 Mar 2007, Eur Ing Chris Green wrote:

My FC6 at work to Slackware 11 at home problem continues.

It originally seemed to be just an SSH problem but I think it's more than that, I can't see web pages on the apache sesrver on my home machine either. Since the only two 'holes' in the firewall at home are for ssh and http I can't really try anything else.

The symptom seems to be that just about nothing (in the way of data) gets from my home machine to the FC6 machine at work. Working from other machines at work (Solaris and other Linux distributions) everything works fine. Similarly the FC6 machine at work seems to communicate with the rest of the world without problems.

There is one set of messages about a similar problem that I have found on Google which suggests it may be an MTU size problem. I have tried setting the MTU at both ends to 576 but I'm not convinced I've done this right. If I just do:-

ifconfig eth0 mtu 576

at both ends is that all that's needed? Does the change take effect immediately or what?

The *only* thing I can think of that's really different when talking (or not) to my home system is that it's through a NAT router and this is what, maybe, points at the MTU issue. Though I really don't understand why it only happens from the FC6 systems.

Do you have conflicting private IP ranges at both ends? Is it a netmask typo, although I'm unsure if you said your other work machines can conenct to your home machine or not?

Cheers.

-Mark

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