[LARTC] strange problem

[LARTC] strange problem

[emo terziev]

hi all,

 I have strange problem into my network. traffic to
one IP goes into exact same intervals and look like
drop line and after 10sec and again start connection
 Traffic is into default HTB rules ( rate/ceil 8kbit)

my question is can i prevent from these
connect/disconnect values.and is there any docs for
already detect problem like my.

I use HTB 


P: 62.73.105.24 IN: 000360 kB Out: 021000 kB IN: 0.12
kB/sOut: 6.84 kB/s
IP: 62.73.105.24 IN: 000000 kB Out: 000000 kB IN: 0.00
kB/sOut: 0.00 kB/s
IP: 62.73.105.24 IN: 000000 kB Out: 000000 kB IN: 0.00
kB/sOut: 0.00 kB/s
IP: 62.73.105.24 IN: 000400 kB Out: 021000 kB IN: 0.13
kB/sOut: 6.84 kB/s
IP: 62.73.105.24 IN: 000062 kB Out: 000000 kB IN: 0.02
kB/sOut: 0.00 kB/s
IP: 62.73.105.24 IN: 000124 kB Out: 000000 kB IN: 0.04
kB/sOut: 0.00 kB/s
IP: 62.73.105.24 IN: 000342 kB Out: 021000 kB IN: 0.11
kB/sOut: 6.84 kB/s
IP: 62.73.105.24 IN: 000062 kB Out: 000000 kB IN: 0.02
kB/sOut: 0.00 kB/s
IP: 62.73.105.24 IN: 000000 kB Out: 018000 kB IN: 0.00
kB/sOut: 5.86 kB/s
IP: 62.73.105.24 IN: 000360 kB Out: 003000 kB IN: 0.12
kB/sOut: 0.98 kB/s
IP: 62.73.105.24 IN: 000000 kB Out: 000000 kB IN: 0.00
kB/sOut: 0.00 kB/s
IP: 62.73.105.24 IN: 000360 kB Out: 021000 kB IN: 0.12
kB/sOut: 6.84 kB/s
IP: 62.73.105.24 IN: 000000 kB Out: 000000 kB IN: 0.00
kB/sOut: 0.00 kB/s
IP: 62.73.105.24 IN: 000000 kB Out: 000000 kB IN: 0.00
kB/sOut: 0.00 kB/s
IP: 62.73.105.24 IN: 000332 kB Out: 019500 kB IN: 0.11
kB/sOut: 6.35 kB/



regards
emil


		
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[LARTC] Strange problem

[Wongbali]

Dear All,

My apologize if I post in the wrong place.

I have a very strange problem with my Linux machine that be operated as
Internet Gateway

Below the simple picture of network configuration:

INTERNET ------| Linux |------ LAN / Mail server

Linux machine only runs 2 services: SMTP & HTTP Proxy (webcache).

Problem has started since yesterday of it's the SMTP traffics (TCP 25) to
LAN (Eth1). But SMTP traffic to Internet (Eth0) are OK. All other traffic
are OK, run well.

I run telnet the port 25 of internal mail server (from Linux machine), the
response is very slow but success (more than 1 minute). All of email client
Outlook Express, Mac, etc (almost) always get timeout message when trying to
send email through Linux machine.

I run Ethereal to see the packets, seems there is no strange thing.
 I let users to relay to ISP's SMTP server (still NAT by Linux), traffic
is fine. Email can pass through.

Telnet-ing the port 25 of Linux machine give same response, very slow (but
success). I have tried to pull out all of LAN cable and plug 1 PC directly
to Linux Machine, result is same. I also replaced the Eth1 with another
card, same result

Hope you would share experiences to solve this abnormal problem. What other
tools should I use to detect the problem source?

Thank you so much for your kind help. Your advises are very appreciated.

Thx & Rgds,

Awie


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