home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Columbia Kermit
/
kermit.zip
/
newsgroups
/
misc.20030409-20031118
/
000121_ishikawa@yk.rim.or.jp_Sat May 31 17:33:05 EDT 2003.msg
< prev
next >
Wrap
Text File
|
2020-01-01
|
2KB
|
59 lines
Article: 14346 of comp.protocols.kermit.misc
Path: newsmaster.cc.columbia.edu!panix!newsfeed.media.kyoto-u.ac.jp!newsfeed.rim.or.jp!news.rim.or.jp!not-for-mail
From: Ishikawa <ishikawa@yk.rim.or.jp>
Newsgroups: comp.protocols.kermit.misc
Subject: Re: ftp DIR times out
Date: Sun, 01 Jun 2003 06:26:46 +0900
Organization: Ye 'Ol Disorganized NNTPCache groupie
Lines: 35
Message-ID: <3ED91E16.1F55E438@yk.rim.or.jp>
References: <669ac511.0305281547.1cec3194@posting.google.com> <zGgBa.77352$h42.24210@twister.nyc.rr.com>
NNTP-Posting-Host: pl1058.nas911.n-yokohama.nttpc.ne.jp
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-2022-jp
Content-Transfer-Encoding: 7bit
X-Trace: news.rim.or.jp 1054416659 30866 210.139.43.34 (31 May 2003 21:30:59 GMT)
X-Complaints-To: root@rim.or.jp
NNTP-Posting-Date: Sat, 31 May 2003 21:30:59 +0000 (UTC)
X-Mailer: Mozilla 4.8 [en] (X11; U; Linux 2.4.20 i686)
X-Accept-Language: ja, en
Cache-Post-Path: duron!unknown@localhost
X-Cache: nntpcache 3.0.1 (see http://www.nntpcache.org/)
Xref: newsmaster.cc.columbia.edu comp.protocols.kermit.misc:14346
"Jeffrey Altman [Road Runner NYC]" wrote:
>
> FTP requires the use of two sockets. One for the command channel and
> one for the data channel. Your attempt to establish the data channel is
> being blocked. Most likely your firewall is configured to block
> outbound connections to arbitrary ports.
>
> You will need to configure Kermit to use an HTTP Proxy Server or SOCKS.
...[omissin]...
I thought I was going to write why not use PASV mode of ftp originally.
But then I got curious and tried to see how I enabled PASV mode
inside Kermit. I found that KERMIT indeed uses/issues PASV mode
internally
without being told so.
Since use of PASV requires the
cooperation of ftp server in question (some ftp servers may not
be configured to allow PASV or doesn't support PASV
at all), use of PASV does not solve firewall problem always.
(I just found out that my ISP's ftp doesn't seem to grok PASV.)
So, for the original question,
it is indeed good if HTTP Proxy Server and/or SOCKS proxy
is available or that the firewall is a flexible and
powerful one such as Firewall-1, etc..
--
int main(void){int j=2003;/*(c)2003 cishikawa. */
char t[] ="<CI> @abcdefghijklmnopqrstuvwxyz.,\n\"";
char *i ="g>qtCIuqivb,gCwe\np@.ietCIuqi\"tqkvv is>dnamz";
while(*i)((j+=strchr(t,*i++)-(int)t),(j%=sizeof t-1),
(putchar(t[j])));return 0;}/* under GPL */