Networking :: Alteon - Not Working In Some Clients?
Dec 10, 2010
Were seeing very strange problems related to Alteon and linux clients. We got an Alteon Application Switch 2208(Version 22.0.2) balancing traffic for http, https and ldap. Everything works fine when using windows(iexplorer) or RHEL 5.3 clients, as wget, firefox, or direct telnel to por 80 or 389. But we got some linux machines, a CENTOS 5.5 for example, that can�t make it to work. No special configuration, no different vlans or subnets. It just stay waiting for the response:
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Jul 17, 2009
I have a strange problem for internet. My clients (winxp - S2) can't get internet.Let me explain my scenerios. Fedora 10 with lan (eth0) having direct internet from dsl model, client (XP service pack 2) can use samba shares using dhcp (wlan0) installed in Fedora 10 box. client can ping my linux box.Now problem is: client (dosbox) can ping the google ip address (i.e ping 74.125.39.106) but can't use 'ping www.google.com'. That means ping with ip works for internet from my client. My linux box can. I can use internet from FC10 but can't use iexplorer from my client to have internet. I have enable ipmasquarding in Firewall and dhcpd is running on wlan0 for dynamic ip address of my clients.Can someone suggest me what kind of problem having I? What should i do to success iexplorer for internet? what possibly am i missing?
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Jan 14, 2010
I'm trying to utilize my company's IT orginazation's LDAP service (running on some sort of windows) for authenticating users on an Ubuntu box.Another group has done something similar for CENTOS; I've used their ldap.conf as a reference as well as ap-server.html (LDAP Authentication section)I can't get it to work. When I try to connect as my corporate user I see this in auth.log:
Code:
Jan 14 14:32:24 Algalon sshd[7062]: nss_ldap: could not connect to any LDAP server as cn=ldapquery2,cn=Users,dc=<companyname>,dc=com - Can't contact LDAP server
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Aug 26, 2010
On all of my xp clients no matter what the username is is I am continously getting the error saying that the profile cannot be found. I just built this domain recently and since day 1 the roaming profiles have not worked.
here is my smb.conf:
# Primary Domain Controller smb.conf
# Global parameters
[global]
unix charset = utf8
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Mar 27, 2009
I need to set up a VPN between 2 clients but don't have the foggiest idea where to start. I have searched the internet in vain, I have yet to discover the steps I need to take.
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Jan 17, 2011
Connection from MANY VNC clients to ONE Server?
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Jan 27, 2010
Ok, here goes, I have a rdp server sitting at a remote store which is behind a router I do not control.
I might be able to get the phone company to add routing to it but at the moment I'd like to do this with ssh and reverse port routing, because I might need this for other ports later and I never know if the phone company wont break other routings already in place or just screw up the entire thing .
I am able to have a linux box at the site ssh into a server located where I'm at and reverse port forward port 3389 to that server. I can also then ssh into that server from my linux box and port forward 3389 to my box, under another port since my 3389 is already in use. Finally I can use rdesktop to rdp on the my local box which bounces it through the server and back to the linux box which forwards it to the rdp server (A Windows 2008 server to be exact). This is all well and good and works reasonably fast, but, I need to be able to have users on windows boxes at my site do this without all of the rigmarole. I need to, I guess, redirect a normal open port, or create one, on the server where I am so that it connects internally to the reverse forwarded port or open the internal port to the outside. So I guess I need to make it a 'gateway' for that one port, this way all I have to do is point the rdp clients at the main server and port to have it eventually connect to the rdp server in the remote store.
how to go about doing it. I guess I need an iptables entry forwarding the port but I'm not sure what is should be.
The other option is opening up the port 3389 to the outside but I'm not sure how to do that either. Right now I have no iptables entries at all but even if I turn off iptables completely port 3389 is not available if I try to use it from another pc on the network but I can rdp from the server itself using the 3389 port so I know it's working internally.
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Jul 17, 2010
I have a client in Pittsburgh that has a Mac server and a Linux (RHEL) server on a LAN. They have a Netgear FVS 318v3 router on which they had a VPN running. They could do this because they had the router configured for IP-SEC and they only had Mac laptops as clients. I'm told Mac laptops can be configured to connect to IP-SEC VPNs, but Linux (I have Ubuntu) clients cannot.
I'm told that we need an PPTP VPN, and that the Netgear can not act as an endpoint, but can pass PPTP traffic to one of the servers if we set them up as a PPTP server.
We hired two different network consultants to set up the VPN, but neither one is able to set up a VPN to allow both the Mac and Linux laptops to connect.
Why is this so difficult? Lots of companies have VPNs that allow any client to connect.
Would it be better for us to purchase a different router that can act as a PPTP endpoint?
Do I want the router to act as a PPTP endpoint, or would it be better for me to use the Netgear and set up a PPTP service on one of the servers? Or, is there some better solution?
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Jul 1, 2010
I'll state the issue and then give whatever extra details are needed. I'm running Ubuntu 10.xThe Linux box is connected to a router via ethernet. That Linksys router is bridged to an AT&T router.The bridging is working fine. The AT&T router's page shows the IP of the Linux box and lists it as a device. The Linksys page shows no errors with packet transmission and receipt. I can ping the Linux box from any client on the AT&T router, and can ping the AT&T clients from the Linux boxI had set the IP of the Linux box to192.168.1.201 while configuring that router, as I had set that router to 192.168.1.200 and it just seemed orderly.The network preferences show eth0 being set to auto dhcp, but the IP is still set to .201 so I don't know that it actually released or renewed.
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Oct 28, 2010
Code:
DMZ
Server--Router0--Modem0 ISP2--Modem3--Router3--Client3
/
Client1--Router1--Modem1--ISP1--WAN
/
Client2--Router2--Modem2 ISP3--Modem4--Router4--Client4
The Server in the above diagram can be accessed by Client3 and Client4 but not at all by Client1 or Client2. Router0 specifies the Server as a DMZ Host. I would be more specific but this is not my server. I don't use a DMZ, I forward ports when they are needed. In this case I represent ISP1 and the server belongs to a befuddled client. Client1 & Client2 can send packets to each other, no problem. Could the DMZ be breaking communication between the Server and Clients 1 & 2?
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Apr 20, 2010
I'm having a problem getting X to forward from one of my machines on my network. There are a bunch of clients running RHEL5 and one server also running RHEL5. When I ssh from any client to any of the other clients using: ssh login@client3.blah.blah.blah -X everything works fine, but if I try to ssh to the server
ssh login@server.blah.blah.blah -X
I get the following error: emacs: Cannot connect to X server localhost:10.0. Check the DISPLAY environment variable or use `-d'. Also use the `xhost' program to verify that it is set to permit connections from your machine. I've also tried from my mac laptop to ssh with -X to both my client machines and the server, with the same problem. Forwarding works fine when I ssh to the clients, but not to the server.
Things I've done/tried: I've checked sshd_config for X11Forwarding yes. I also tried adding the server using xhosts. Turned off all firewalls. It really seems to be a problem with my server since I have the same problem with my mac laptop (on a totally different network).
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Jun 21, 2009
I'm setting up a network for a school. The network has 11 client computers (windows xp) and a server (fedora 10) All I need to do is have a share for all the children to use. (this I did by adding each client to the workgroup specified on samba then I just map the drive). The issue turns out to be that I have over 300 users. The users don't always use the same computer therefore I need the users to be registered on all 11 clients. How can I do this? I have been searching and I've not gotten anywhere. How can I add the computers to a domain instead of a workgroup? What can I use?
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Apr 18, 2010
I use a t-mobile usb mobile broadband stick; model usb stick 120.
the signal strength is 3g yet i randomly get disconnected from the likes of
pidgin
amsn messenger
ebuddy
can anyone tell me why, or how to fix it
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Dec 30, 2010
I'm trying to get a pptp server up and running. The server starts just fine, but encounters errors when a client tries to connect.
Code:
CTRL: I wrote 32 bytes to the client.
Dec 29 23:27:48 frankenstein pptpd[9402]: CTRL: Sent packet to client
Dec 29 23:27:48 frankenstein pptpd[9403]: CTRL (PPPD Launcher): program binary = /usr/sbin/pppd
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I assume the failed read line is the culprit. I am currently running on a test machine. There is no firewall. I read on this error points to a firewall misconfiguration, but there isn't one.
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Apr 1, 2010
That is, the thin clients will have to get their OS image via TFTP, and their IP address via DHCP on a *wireless card* - is this possible?What spec should I ask for/search for when buying the WiFi card?
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Jun 18, 2009
having trouble connecting to many websites due to recent actions of the Iranian government on banning a lot of websites.That's why, I decided to make my computer act like a bridge for their computers, so that they can surf the web using my Internet connection in US. I have Arch linux running on my desktop. I tried to install OpenVPN based on the instructions at ArchWiki page, but I had no success. I guess OpenVPN is too much for what I want to achieve and ArchLinux repositories don't have all the necessary packages to configure it based on some posts I read.
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Jul 25, 2010
Im a linux newbie and I'm some sort of creating an Internal webserver or Intranet for short locally. My local webserver ip address is 192.168.0.1 and when im trying to view this on my xp clients i will type it in the url 192.168.0.1. What im trying to do is view my webserver instead of typing ipaddress I'll type hmij.edu.ph for example and trying to resolve it locally through local dns resolution.. so every time i type for example. my webserver name hmij.edu.ph i want it to redirect it to my local webserver w/out going to the internet first.. I already setup dnsmasq for dhcp and dnsclient resolution. is there any better way on how i can achieved this??im a little bit of confused on how to make this work. tnx in advance!
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Apr 10, 2010
This is as far as FireFTP can go to make a connection.
Code:
220 Welcome to Steve Test SFTP service.
AUTH TLS
Proceed with negotiation.
PBSZ 0
All the basic vsftpd.conf advice followed:
Code:
ssl_enable=YES
allow_anon_ssl=NO
force_local_data_ssl=NO
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Feb 18, 2010
I'm having a problem with TCP connections taking a long time to establish, often timing out. The strange thing is it seems to only happen on some source workstations and not others in our LAN but not from home or other internet connections.I can see the SYN packet leave the source workstation, enter the firewall LAN interface, leave the firewall WAN interface and arrive at the destination server's interface. Then the SYN ACK packet doesn't get sent for 2 to 300 seconds. Once I see the SYN ACK sent from the server, the connection is ESTABLISHED.
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Mar 3, 2010
how to Divide Equal Bandwidth between / Among Network Clients? e.g if there is total bandwidth = 10Mbps and only 5 clients are online then bandwidth should be divided evenly i.e each client to 2Mbps and if 20 clients are online then 0.5Mbps to each client automatically. [in windows this can be done by bandwidthcontroller software now how it can be done in linux]
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Jul 26, 2010
I'm some sort of creating an Internal webserver or Intranet for short locally. My local webserver ip address is 192.168.0.1 and when im trying to view this on my xp clients i will type it in the url 192.168.0.1. What im trying to do is view my webserver instead of typing ipaddress I'll type hmij.edu.ph for example and trying to resolve it locally through local dns resolution.. so every time i type for example. my webserver name hmij.edu.ph i want it to redirect it to my local webserver w/out going to the internet first.. I already setup dnsmasq for dhcp and dnsclient resolution. is there any better way on how i can achieved this?
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Jan 7, 2010
i have successfully setup PPTPD on my server and I can open a VPN tunnel but my clients can only ping the server's IP, they don't have access to the internet through the VPN.
i have searched different forums and understand that I have to create a route on the server to route packets between the VPN interface and my internet gateway, but I didn't manage to get this work.
here is what my setup looks like:
Code:
root@r31495:~# ifconfig
eth0 Link encap:Ethernet HWaddr 00:1c:c0:c7:13:35
inet addr:94.23.197.XX Bcast:94.23.197.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
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Dec 15, 2010
On my server I've a OpenVPN gateway and a DNS bind9 serveur At the moment, OpenVPN send opendns address to the clients and it works fine. I would like to use my DNS server for my clients to work with any DNS address. Here is OpenVPN config :
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Mar 8, 2011
I don't really have a reason for this currently. I recognize all the MAC address on my DHCP client list and keep it rather well locked down. I was just wondering if there was something I could run on the terminal to get more information on a given MAC address on my network. Something kind of like whois for websites.
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Jul 22, 2009
I am having FC11 with an HP prineter attached my firewall is disabled I trying to print from my laptops after I have setup samba and shared the printer , It was working fine when I was installing FC4 and FC5 I am not sure what is missing when I tried to print from the XP box I got "Test pge failed to print" error what I have really noticed in the xp and vista box is that when I go to the printer settings inside control panel , pressing the ports tab and checking to what port I am printing I see that the port "\samba-serverprinter" is not created there this is the log
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Nov 20, 2010
got an asus wl500gp v2 and i just had to reflash it. Flashing went through fine, but while setting up the PPPoE connection I got stuck. Here is what the configuration looks like:ADSL Modem ---Ethernet--- Router ---Ethernet--- Laptop I set up OpenWRT to connect over PPPoE over the WAN port and the connection is established:
PAP authentication succeeded
peer from calling number XX:XX:XX:XX authorized
replacing old default route to br-lan
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Mar 3, 2010
i have Centos 5.3 installed with TXT mode i want to create and share one folder to be accesible to me from the network, to download and share files into it with my Host, i created the folder but dont know how to share it,
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Jun 10, 2009
have two internet lines from two isp every one pluged to interface eth0 and eth1 and i have eth2 interface to internel network clients now i need to make some clients to use line 1 and other use line 2 i want make this without use netmask , just for selected IP.
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Dec 12, 2009
following on from [URL] I was having a little think about how to make this concept more secure. its easy enough to separate known and unknown clients out via MAC address. but that system is easier to break than it is to set up either, sniff out a mac address already connected to the system, and spoof that address.or, more simply, set a static IP on your wifi device, and avoid the redirection completely. so, is anyone aware of a relatively straight forward setup that would allow me to identify clients on my network without relying on MAC address, would more forcefully separate out known and unknown hosts (vlan??). As well as doing so without alerting them to the fact, and without requiring known hosts to do anything special, or install software. Or requiring any more hardware than I have already. (hardware = a debian box with 2 NIC's acting as a gateway between all internal network, and the billion router which handles the outside world not getting in, and a WAP attached to the internal side of the network. also somewhere I have a wifi card that I could attach to the server to replace the AP) I assume some sort of authentication mechanism is required, but I dont know much more past that.
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Jan 8, 2009
I can't seem to get the X server to allow access from clients on other hosts. (I know, not exactly a network problem, but. I made the change in /usr/share/gdm/defaults.conf to be : DisallowTCP=false
and this worked on another CentOS system, but it hasn't fixed it on this one. What other things could prevent other clients from connecting to the X server? From the local host, I get :
Warning: Tried to connect to session manager, Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed although the client DOES actually create the window and work! So, maybe this message is a clue.
From the remote host, I get : Error: Can't open display: 10.10.1.20:0.0 Which is not terribly informative. Is there a log somewhere which details why a connect request was denied? The files in /var/log/gdm are not very informative.
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