Hi Alex, I was thinking along that line earlier that perhaps NCBI is filtering my IP addresses or the domain itself.
I know I don't have a problem with our firewall. We snooped the firewall interface and we saw packets going to and from the ftp server. I posted this question to make sure that I have ruled out the possibility that the problem is on my end. So far everything indicates that the problem lies with NCBI's ftp server. But since I am not an expert on ftp, I may have overlooked something on my end. The sysadmin at NCBI who can help me is on leave right now and won't be back until next week Tuesday. I'll let you know whether they did indeed block my entire netblock. Thank you, Sharon -----Original Message----- From: Alex [mailto:[EMAIL PROTECTED]] Sent: Friday, May 24, 2002 11:48 AM To: Sharon Nagao Cc: bblisa Subject: Re: BBLISA: Having ftp problem This may or may not have anything to do with your problem: Last week I know of an instance where an entire netblock was blocked by NIH from www.ncbi.nlm.nih.gov because a compromised machine on that netblock was attacking them. If this is their normal response, then your netblock may be being blocked from the ftp site for similar reasons. In the case I know of, they sent mail to webmaster at the domain in question (of all places), so they may be trying to reach you and the person getting the mail may not have a clue what to do with it.... All I can suggest is trying to reach their sysadmins.... > Until recently I have been able to ftp > to a site without problems. > > Recently (perhaps 1-2 weeks ago), I have > not been able to log into the ftp site. > > Here is the message I am getting --- > > Connected to ftp.ncbi.nih.gov. > 220- > Warning Notice! > 421 Service not available, remote server has closed connection > > > I am able to connect to other ftp sites, but not > to this one. This failure to connect to this > one ftp site is true for all my other servers on > the same network. > > However, I am able to successfully log in to this > ftp site from another machine not on the same network > as the machine that is having the problem. > > I have already confirmed that packets are getting > to the remote ftp server and is being received from > the remote ftp server. > > At this point I believe the problem lies with the remote > ftp server. But, I could be wrong. > > Any help in resolving this problem would be most > appreciated. > > Many thanks in advance to all those who respond. :-) > > > - sharon --- Send mail for the `bblisa' mailing list to `[EMAIL PROTECTED]'. Mail administrative requests to `[EMAIL PROTECTED]'.
