Re: unable to apt-get or wget

On Wed, 9 Jan 2008, in the Usenet newsgroup alt.os.linux, in article
<4823e920-3b1d-47d5-9a6e-36ffba8b1ac3@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>, Ivan wrote:

NOTE: Posting from groups.google.com (or some web-forums) dramatically
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Pascal Hambourg <boite-a-s...@xxxxxxxxxxxxxxx> wrote:

zayin a =E9crit :

I was able to ftp to ibiblio.org and downloaded the file HEADER.html
with no problems.

Then you might be able to use apt with an FTP mirror in sources.list if
Ubuntu provides some.

Which is really confusing, because if there were some sort of firewall
rule behind my network, or I was behind a proxy server, I shouldn't be
able to download files via ftp either, right?
Unless there were different rules set for ftp and http.

I've seen a corporate network which had a transparent proxy for FTP but
required use of an explicit proxy for HTTP(S) in the web browser setup.

If this is a corporate setup, then yes, this is not uncommon. Recall
that basic web stuff is found on port 80, secure web on port 443, ftp
on port 21, and so on (see /etc/services) and it's trivial to put
different rules for different ports.

What's the output of "tcptraceroute <anywebsite>" ?

That's one of the most useful tools for debugging this kind of problem.
Another useful tool is a common packet sniffer. That allows you to see
who you are talking to - detecting proxies is merely looking at the TTL
values.

I managed to work out my problem.. My network is routed by a proxy
server.

Sounds like "work". That's often done to control abuse of company
networks.

I thought I was going mad..

mad... No, that page 404s. ;-)

Old guy
.

Relevant Pages

  • Re: Protokolldefinition gesperrt
    ... wenn du im Bankingprogramm den Proxy ... Habe bislang immer für diverse Bankingprogramme nur den Port 3000 an der ISA ... Für den FTP Zugriff ist der FTP Zugriffsfilter zuständig, ...
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  • Re: Problems connecting to VxWorks FTP Server from Win NT(2K)
    ... InetstatShow shows tasks listening on port 23 ... Command line FTP on Win NT does not connect to the target IP. ... Verify the network gateway is set up to the board. ...
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  • RE: file transfer over outbound port 80?
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  • Re: FTP access via ISA(proxy)
    ... The funny thing is I personally have Proxy 2.0 and can FTP via that.. ... My understanding was that IE was port mode unless you set the PASV setting ... this is a good lead into why your Domain Host clients ...
    (microsoft.public.backoffice.smallbiz)
  • Re: FTP access via ISA(proxy)
    ... The funny thing is I personally have Proxy 2.0 and can FTP via that.. ... My understanding was that IE was port mode unless you set the PASV setting ... this is a good lead into why your Domain Host clients ...
    (microsoft.public.isa)