[clug] April 2018 CLUG Meeting

[Scott Ferguson]

On 27/04/18 15:45, Keith Goggin via linux wrote:
> Thanks to Geoff Huson for his excellent 'Web Security Primer' last night.
> 
> I know 'an' IP address of my bank and if every thing I needed was at
> that address I'm guessing I'd be safe.

As has been pointed out already - IP addresses can change (though banks
rarely do so), however, more importantly, IP addresses can be spoofed
(BPG attacks).

Responsible businesses (banks?) use DNSSEC to authenticate their IP
addresses.

You can check a DNS record for an address on the Linux CLI:-
dig +dnssec +multi anz.com.au @8.8.8.8 | grep NOERROR && echo 'Server
Authenticated' || echo 'Server Unauthenticated'

or with a web browser:-
https://dnssec-analyzer.verisignlabs.com/anz.com.au

<snipped>


Kind regards

-- 
    A: Because we read from top to bottom, left to right.
    Q: Why should I start my reply below the quoted text?

    A: Because it messes up the order in which people normally read text.
    Q: Why is top-posting such a bad thing?

    A: The lost context.
    Q: What makes top-posted replies harder to read than bottom-posted?

    A: Yes.
    Q: Should I trim down the quoted part of an email to which I'm reply

http://www.idallen.com/topposting.html