Re: Fw: Problems with lost packets
- Original Message - From: "Vincent Meoc" <[EMAIL PROTECTED]> To: "Alberto Rodríguez" <[EMAIL PROTECTED]> Sent: Thursday, April 25, 2002 8:19 AM Subject: Re: Fw: Problems with lost packets > Try to clean your physical ADSL connection (the phone plug), maybe there are dust. Ok, but if it were the problem, neither the Firewal-linux-debian-kernel-2.2.17-machine and windows box machines should work properly, don`t you? > > > On Wed, Apr 24, 2002 at 06:21:44PM +0100, Alberto Rodríguez wrote: > > Hello, > > > > I'm having problems with packets from internet. > > > > I have a little network. theare are a firewall which masquerade all paquets. > > Now I have a server for web, email etc... > > > > The firewall have a adsl line. theare are about 10 windows machines which > > use internet conection by the firewall. > > > > All these machines ( the windows ones) use full internet without problems. > > But the server have a big problem whit packets... > > > > > > For instance, if I write ping www.gulic.org from the server, I get the > > follow: > > > > ping www.gulic.org > > PING www.gulic.org (193.145.135.17): 56 data bytes > > 64 bytes from 193.145.135.17: icmp_seq=0 ttl=237 time=157.7 ms > > 64 bytes from 193.145.135.17: icmp_seq=1 ttl=237 time=465.3 ms > > > > > > and I only can receive one or two response to the ping, after Ctrl+C I get > > the follow: > > > > --- www.gulic.org ping statistics --- > > 9 packets transmitted, 2 packets received, 77% packet loss > > round-trip min/avg/max = 157.7/311.5/465.3 ms > > > > The problem is only if I ping to a exterior IP. If I ping to an internal > > one, the response of ping is normal: > > > > ping 10.0.0.64 > > PING 10.0.0.64 (10.0.0.64): 56 data bytes > > 64 bytes from 10.0.0.64: icmp_seq=0 ttl=128 time=0.7 ms > > 64 bytes from 10.0.0.64: icmp_seq=1 ttl=128 time=0.6 ms > > 64 bytes from 10.0.0.64: icmp_seq=2 ttl=128 time=0.7 ms > > 64 bytes from 10.0.0.64: icmp_seq=3 ttl=128 time=0.7 ms > > 64 bytes from 10.0.0.64: icmp_seq=4 ttl=128 time=0.7 ms > > 64 bytes from 10.0.0.64: icmp_seq=5 ttl=128 time=0.7 ms > > 64 bytes from 10.0.0.64: icmp_seq=6 ttl=128 time=0.7 ms > > > > --- 10.0.0.64 ping statistics --- > > 7 packets transmitted, 7 packets received, 0% packet loss > > round-trip min/avg/max = 0.6/0.6/0.7 ms > > servidor:~# > > > > > > > > > > The server have a pci ethernet with the 8029 realtek chip. > > > > The server have a 2.4.18 kernel with xfs journaling support. > > > > The irq of the ethernet is 10 and is shared with the usb port. > > > > > > Could anyone help me with this problem? > > > > Sorry for my bad English and thanks in advance. > > > > > > > > > > -- > > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] > > > > -- > > Vincent Meoc > Administrateur système et réseau > > DUKE - Digital Age Agency > T : 01 53 44 19 00 > F : 01 53 44 19 21 > e-mail : [EMAIL PROTECTED] > www.duke-interactive.com > -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Fw: Problems with lost packets
- Original Message - From: "nn" <[EMAIL PROTECTED]> To: "Alberto Rodríguez" <[EMAIL PROTECTED]> Sent: Wednesday, April 24, 2002 8:47 PM Subject: Re: Fw: Problems with lost packets > Quoting Alberto Rodríguez <[EMAIL PROTECTED]>: > > OK, I understand. > -Which ADSL driver do you use under linux ? I havent't got any, my adsl machine is an external router adsl which is conected by an ethernet nic to the computer. It's a 3com 812. > -do you have a noisy line ? Do you have ADSL phone filters for all your phones Well... not, on this adsl-line aren`t phones, and it have got a splitter which slipt date and voice. > or fax machine ? Ok, yes, we have a fax machine on this line. Perhaps It's the problem, but so I don't understand the reason because I can work from the firewall (which is a potato-debian-linux machine with kernel 2.2.17), and I can't work from the server properly (which is a potato-debian-linux with kernel 2.4.17 and support for xfs filesystem). both of them (Server and Firewall) and the router-adsl are all conected to a switch. Perhaps, the problem is between adsl conection and the kernel 2.4.17? In anyway, yesterday I conected the server to another machine ( on my house ) who has a ppp conection by modem, and there, the server works succesfully. In fact I have updated with apt-get the potato release of debian ( about 33 megas) from this poor conection. > -do you use IPTABLES as firewall under linux ? Do you have rules for ICMP > traffic ? No, I use Ipchains as firewall under linux only in the Firewall-machine. And I'm sure that I haven't any rule for ICMP packets. Do you think the problem is on the adsl-line? Do you think is an incompatibiliy problem between kernel 2.4.17 and fax or noises on the line? > > > > > > > - Original Message - > > From: "nn" <[EMAIL PROTECTED]> > > To: "Alberto Rodríguez" <[EMAIL PROTECTED]> > > Sent: Wednesday, April 24, 2002 7:07 PM > > Subject: Re: Fw: Problems with lost packets > > > > > > > ok but your windows boxes MUST send correct sized packets WHEN these > > packets > > > are destination TO the internet. Example : connection to www.yahoo.com > > from > > > your windows machine : > > Yes but the problem is not with a windows machine! > > The problem is with a debian-linux machine > > > > linux-server-machine --> Linux-firewall-machine--> internet --> yahoo.com > > > > The problem is when I ping from linux-server-machine to Internet, not when > > I > > ping from a windows to internet. > > > > Do you understand? > > > > > > > > windows machine --> Linux Box --> internet -> Yahoo.com > > > > > > Your windows packets must be sized correctly. > > > > > > please read articles http://www.dslreports.com/ > > > > > > > > > > > > > > > > > > Quoting Alberto Rodríguez <[EMAIL PROTECTED]>: > > > > > > > > > > > - Original Message - > > > > From: <[EMAIL PROTECTED]> > > > > To: "Alberto Rodríguez" <[EMAIL PROTECTED]> > > > > Cc: <[EMAIL PROTECTED]> > > > > Sent: Wednesday, April 24, 2002 6:28 PM > > > > Subject: Re: Fw: Problems with lost packets > > > > > > > > > > > > > Try to set the MTU parameters correctly under your windows boxes. > > > > > > > > I can't understand, since the server is a linux-debian box not a > > windows > > > > box. > > > > > > > > > > > > > > > > > > > > > > > > > > stef > > > > > > > > > > > > > > > Quoting Alberto Rodríguez <[EMAIL PROTECTED]>: > > > > > > > > > > > Hello, > > > > > > > > > > > > I'm having problems with packets from internet. > > > > > > > > > > > > I have a little network. theare are a firewall which masquerade all > > > > > > paquets. > > > > > > Now I have a server for web, email etc... > > > > > > > > > > > > The firewall have a adsl line. theare are about 10 windows > > machines > > > > which > > > > > > use internet conection by the firewall. > > > > > > > > > > > > All these machines ( the windows ones) use full internet without > > > > problems. > > >
Re: Fw: Problems with lost packets
I dont see how it could be a MTU problem witht the windows boxes as they works properly following his explanations.. Some stuffs to check: - can you ping properly this www.gulic.org from the firewall itself ? - Sniff the icmp packets (tcpdump or (t)ethereal from your firewall machine, on the inside and outside interface and check what's happening (to see if the problem comes from your local network or after). JeF On Wed, Apr 24, 2002 at 01:28:22PM -0400, [EMAIL PROTECTED] wrote: > Try to set the MTU parameters correctly under your windows boxes. > > stef > > > Quoting Alberto Rodríguez <[EMAIL PROTECTED]>: > > > Hello, > > > > I'm having problems with packets from internet. > > > > I have a little network. theare are a firewall which masquerade all > > paquets. > > Now I have a server for web, email etc... > > > > The firewall have a adsl line. theare are about 10 windows machines which > > use internet conection by the firewall. > > > > All these machines ( the windows ones) use full internet without problems. > > But the server have a big problem whit packets... > > > > > > For instance, if I write ping www.gulic.org from the server, I get the > > follow: > > > > ping www.gulic.org > > PING www.gulic.org (193.145.135.17): 56 data bytes > > 64 bytes from 193.145.135.17: icmp_seq=0 ttl=237 time=157.7 ms > > 64 bytes from 193.145.135.17: icmp_seq=1 ttl=237 time=465.3 ms > > > > > > and I only can receive one or two response to the ping, after Ctrl+C I get > > the follow: > > > > --- www.gulic.org ping statistics --- > > 9 packets transmitted, 2 packets received, 77% packet loss > > round-trip min/avg/max = 157.7/311.5/465.3 ms > > > > The problem is only if I ping to a exterior IP. If I ping to an internal > > one, the response of ping is normal: > > > > ping 10.0.0.64 > > PING 10.0.0.64 (10.0.0.64): 56 data bytes > > 64 bytes from 10.0.0.64: icmp_seq=0 ttl=128 time=0.7 ms > > 64 bytes from 10.0.0.64: icmp_seq=1 ttl=128 time=0.6 ms > > 64 bytes from 10.0.0.64: icmp_seq=2 ttl=128 time=0.7 ms > > 64 bytes from 10.0.0.64: icmp_seq=3 ttl=128 time=0.7 ms > > 64 bytes from 10.0.0.64: icmp_seq=4 ttl=128 time=0.7 ms > > 64 bytes from 10.0.0.64: icmp_seq=5 ttl=128 time=0.7 ms > > 64 bytes from 10.0.0.64: icmp_seq=6 ttl=128 time=0.7 ms > > > > --- 10.0.0.64 ping statistics --- > > 7 packets transmitted, 7 packets received, 0% packet loss > > round-trip min/avg/max = 0.6/0.6/0.7 ms > > servidor:~# > > > > > > > > > > The server have a pci ethernet with the 8029 realtek chip. > > > > The server have a 2.4.18 kernel with xfs journaling support. > > > > The irq of the ethernet is 10 and is shared with the usb port. > > > > > > Could anyone help me with this problem? > > > > Sorry for my bad English and thanks in advance. > > > > > > > > > > -- > > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > > with a subject of "unsubscribe". Trouble? Contact > > [EMAIL PROTECTED] > > > > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] > -- -> Jean-Francois Dive --> [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Fw: Problems with lost packets
Try to set the MTU parameters correctly under your windows boxes. stef Quoting Alberto Rodríguez <[EMAIL PROTECTED]>: > Hello, > > I'm having problems with packets from internet. > > I have a little network. theare are a firewall which masquerade all > paquets. > Now I have a server for web, email etc... > > The firewall have a adsl line. theare are about 10 windows machines which > use internet conection by the firewall. > > All these machines ( the windows ones) use full internet without problems. > But the server have a big problem whit packets... > > > For instance, if I write ping www.gulic.org from the server, I get the > follow: > > ping www.gulic.org > PING www.gulic.org (193.145.135.17): 56 data bytes > 64 bytes from 193.145.135.17: icmp_seq=0 ttl=237 time=157.7 ms > 64 bytes from 193.145.135.17: icmp_seq=1 ttl=237 time=465.3 ms > > > and I only can receive one or two response to the ping, after Ctrl+C I get > the follow: > > --- www.gulic.org ping statistics --- > 9 packets transmitted, 2 packets received, 77% packet loss > round-trip min/avg/max = 157.7/311.5/465.3 ms > > The problem is only if I ping to a exterior IP. If I ping to an internal > one, the response of ping is normal: > > ping 10.0.0.64 > PING 10.0.0.64 (10.0.0.64): 56 data bytes > 64 bytes from 10.0.0.64: icmp_seq=0 ttl=128 time=0.7 ms > 64 bytes from 10.0.0.64: icmp_seq=1 ttl=128 time=0.6 ms > 64 bytes from 10.0.0.64: icmp_seq=2 ttl=128 time=0.7 ms > 64 bytes from 10.0.0.64: icmp_seq=3 ttl=128 time=0.7 ms > 64 bytes from 10.0.0.64: icmp_seq=4 ttl=128 time=0.7 ms > 64 bytes from 10.0.0.64: icmp_seq=5 ttl=128 time=0.7 ms > 64 bytes from 10.0.0.64: icmp_seq=6 ttl=128 time=0.7 ms > > --- 10.0.0.64 ping statistics --- > 7 packets transmitted, 7 packets received, 0% packet loss > round-trip min/avg/max = 0.6/0.6/0.7 ms > servidor:~# > > > > > The server have a pci ethernet with the 8029 realtek chip. > > The server have a 2.4.18 kernel with xfs journaling support. > > The irq of the ethernet is 10 and is shared with the usb port. > > > Could anyone help me with this problem? > > Sorry for my bad English and thanks in advance. > > > > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact > [EMAIL PROTECTED] > -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Fw: Problems with lost packets
Hello, I'm having problems with packets from internet. I have a little network. theare are a firewall which masquerade all paquets. Now I have a server for web, email etc... The firewall have a adsl line. theare are about 10 windows machines which use internet conection by the firewall. All these machines ( the windows ones) use full internet without problems. But the server have a big problem whit packets... For instance, if I write ping www.gulic.org from the server, I get the follow: ping www.gulic.org PING www.gulic.org (193.145.135.17): 56 data bytes 64 bytes from 193.145.135.17: icmp_seq=0 ttl=237 time=157.7 ms 64 bytes from 193.145.135.17: icmp_seq=1 ttl=237 time=465.3 ms and I only can receive one or two response to the ping, after Ctrl+C I get the follow: --- www.gulic.org ping statistics --- 9 packets transmitted, 2 packets received, 77% packet loss round-trip min/avg/max = 157.7/311.5/465.3 ms The problem is only if I ping to a exterior IP. If I ping to an internal one, the response of ping is normal: ping 10.0.0.64 PING 10.0.0.64 (10.0.0.64): 56 data bytes 64 bytes from 10.0.0.64: icmp_seq=0 ttl=128 time=0.7 ms 64 bytes from 10.0.0.64: icmp_seq=1 ttl=128 time=0.6 ms 64 bytes from 10.0.0.64: icmp_seq=2 ttl=128 time=0.7 ms 64 bytes from 10.0.0.64: icmp_seq=3 ttl=128 time=0.7 ms 64 bytes from 10.0.0.64: icmp_seq=4 ttl=128 time=0.7 ms 64 bytes from 10.0.0.64: icmp_seq=5 ttl=128 time=0.7 ms 64 bytes from 10.0.0.64: icmp_seq=6 ttl=128 time=0.7 ms --- 10.0.0.64 ping statistics --- 7 packets transmitted, 7 packets received, 0% packet loss round-trip min/avg/max = 0.6/0.6/0.7 ms servidor:~# The server have a pci ethernet with the 8029 realtek chip. The server have a 2.4.18 kernel with xfs journaling support. The irq of the ethernet is 10 and is shared with the usb port. Could anyone help me with this problem? Sorry for my bad English and thanks in advance. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
