Topic: 20 second authentication delay

[David Woolley]

Hi,

When I send mail from my Windows client to the smtp mail server of the SME, there is a long wait before the message is sent.  There is a similar wait each time my Windows mail client retrieves mail from the IMAP server.  I have searched these forums and found some similar threads, but I don't understand.  I think I have done the quoted fix below, but there's no improvement.  Any way, I am not using DHCP in my LAN, but have fixed ips.  There was another reply about making an entry in /etc/hosts. I've just installed the 5.1.2 update2 blade, hoping that this issue may have been resolved, but no joy.

Can anyone describe a fixe for me using less shorthand, please?  I'm quite new to the Linux  command line.

Very many thanks

David


Author: Anthony (anthonyv_AT_au1.ibm.com)
Date:   03-11-02 01:50

The fix is to stop resolv.conf being overwritten by dhcpd.

Searched the forum and found this:

# drop the external link - note therefore that you can perform the
# fix remotely using this procedure
/sbin/ifdown eth1
# Replace /etc/resolv.conf with the correct contents
/sbin/e-smith/expand-template /etc/resolv.conf
# Patch the ifup script to use the correct arguments to dhcpcd
/usr/bin/perl -i.old -pe \
's/DHCPCDARGS="-d/DHCPCDARGS="-R -d/' \
/sbin/ifup
# Now bring the external interface back up
/sbin/ifup eth1

[David Woolley]

Hi

I've just found Bill Talcott's post about unstealthing port 113 on my LAN, and this has fixed my local mail problem. Thanks, Bill.  

Sorry for jumping in so quick.

Thanks

David

[Bill Talcott]

Was just going to point you there. Glad I could help. =)

I think I might write something up about ident, as this seems to keep coming up, and a lot of people have no idea what's even causing the problem...

[David Woolley]

Hi Bill Talcott et all

I'm still looking for pointers to some information about the ident probing that e-smith does.

For example, I must open port 113 on my client router when handshaking an ftp connection into my remote e-smith server or else I must wait for a 20-30 second timeout.

I don't understand  why e-smith probes this port.  Other sites - like ftp.redhat.com - don't probe my port 113 and I am authenticated immediately.

What information is gained during the probe? Can I / Is it a good idea to disable the probing?

If I can keep port 113 on my client stealthed then I am more secure, right?

Many thanks

David