[sclug] Re :ftp

[sclug at whittycat.me.uk]

Keith Edmunds wrote: 

> Are you using NAT?

I don't think so. It's not a router, just a simple ethernet modem with one 
ethernet port. I doubt it is capable of being a proxy either. 

Alex Butcher wrote: 

> Sounds like some dodgy firewall between the ftp site and you. It could be
> your ISP, but I'd put money on it being yours (including your ADSL
> router/modem/firewall device).

The firewall is the default iptables provided by the installation. The 
iptables man page says that passive ftp will not be affected. 

> Ethereal <http://www.ethereal.com> is much easier to use.

Maybe. I tried installing it about a year ago and got so entangled with 
libraries and dependencies that I had to give up. I did install tethereal
but I thought its information was just tcpdump presented in a slightly
different way. 

> Looks like your ethernet modem is being a transparent DNS proxy or
something. Eww. 

Doesn't it get its addresses from the nameserver in /etc/resolv.conf? 

I recorded the modem system log during the process of making a connection
[the dates and times are wrong]. Is this what you would expect? 

Sep 16 11:20:35> DSL Carrier is down
Sep 16 11:20:55> DSL Carrier is up
Sep 16 11:20:56> Connection terminated.
Sep 16 11:20:56> pppd 2.4.1 started by root, uid 0
Sep 16 11:20:56> Connect: ppp0 {--}
Sep 16 11:21:05> DSL Carrier is down
Sep 16 11:21:35> DSL Carrier is up
Sep 16 11:22:37> Connection terminated.
Sep 16 11:22:37> pppd 2.4.1 started by root, uid 0
Sep 16 11:22:37> Connect: ppp0 {--}
Sep 16 11:22:39> Couldn't increase MTU to 32725
Sep 16 11:22:39> default route ioctl(SIOCADDRT): Network is unreachable(128)
Sep 16 11:22:39> local  IP address 80.229.223.6
Sep 16 11:22:39> PPPoA Connect with IP Address 80.229.223.6
Sep 16 11:22:39> remote IP address 195.166.128.123
Sep 16 11:22:39> PPPoA Connection Successfully Established
Sep 16 11:22:39> PPPoA Connect with Gateway IP Address: 195.166.128.123
Sep 16 11:22:39> primary   DNS address 212.159.13.49
Sep 16 11:22:39> secondary DNS address 212.159.13.50 

I'll keep on reading what I can find about ftp 

Tony Sumner