Re: installing CentOS/RHEL without CD using PXE?
On Friday 28 March 2008, Hetz Ben Hamo wrote: without disk-on-key (the ISO image itself is about 3.6 GB) Actually, you can use disk-on-key to install a full distribution using a network install (e.g. http://www.us.debian.org/distrib/netinst) # = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: major packet loss at hot server
Hi Sara, Sounds like you should consider switching suppliers. Regarding my problem with Netvision reported last week, I was able to show Netvision the difference in results (5% loss vs 70% loss) when using different routes through Netvisions AS, mainly depending on where the connection originated but this did not actually prove that there was a routing error AFAIK. For some reason I didn't think to test if the packet loss was symmetric (outgoing as well as incomming). That would probably have been as close as you could get to a proof of routing error. Does your packet loss depend on where you enter 012 from (i.e. from Med1, from the IIX, from 012 ADSL)? Is the packet loss symmetric? That is do you lose the same percent of packets on packet going out as comming in? From my experience with Netvision, the level of service that you get at the ISP depends on who knows you, or who knows someone who knows you. Shavua Tov, - yba On Fri, 28 Mar 2008, sara fink wrote: Date: Fri, 28 Mar 2008 16:43:37 +0300 From: sara fink [EMAIL PROTECTED] To: Jonathan Ben Avraham [EMAIL PROTECTED] Cc: linux-il@cs.huji.ac.il Subject: Re: major packet loss at hot server I haven't solved the problem yet. From 012 someone superior (network dep) are supposed to call me and they will put hot on conference and this time I intend to request the net admin/integrator to take care of that AND ask them to go directly to the switch and disable the firewall.The ip from where there is 75-80% packet lost is a principal switchand another 1 or 2 ips where I get additional ~15-20% packet lost. They have a harsh firewall on the main switch. ALL UDP ports are blocked. TCP also a lot of ports closed. tcptraceroute (as opposed to traceroute manages to bypass firewall) reveals that there is a firewall, although inside hot (between switches) the ports are open (firewalk). As for the problem you had last week, I am not sure, because I have static IP without dialer (MPLS) and the first 2 hops belong to hot (where the packet loss occurs) and the 3rd hop is 012. One of support guys said that is 012 blame because they are only infrastructure. 012 says it's hot ip and they are right. And I am the ball which is ping-ponged. ;-( AND ttl to my default gateway is 255. ttl for google.com is 225. But, I will try wireshark as well to check syn, syn-ack. I don't use 3 way handshake. Otherwise I will be detected. I use nmap -sS. I understand that you used -sT flag. Correct? They make troubles if you scan their net? -sT for instance? If you can tell me what exactly you ran, I will be glad. On 3/28/08, Jonathan Ben Avraham [EMAIL PROTECTED] wrote: Hi Sara, Did you solve this problem? Are you sure that it isn't a routing problem at 012 similar to what I had last week with Netvision? - yba On Fri, 21 Mar 2008, sara fink wrote: Date: Fri, 21 Mar 2008 22:10:56 +0200 From: sara fink [EMAIL PROTECTED] To: Israeli Linux mailing list linux-il@cs.huji.ac.il Subject: major packet loss at hot server Hello Everyone I am having major problem with packet loss at some hot server that sits in tel aviv. www.dnsstuff.com revealed this info. I would like to know how many people suffer from this problem. For this task mtr program is needed. The program can be downloaded at http://www.bitwizard.nl/mtr/ . The description of the program is mtr combines the functionality of the traceroute and ping programs in a single network diagnostic tool. As mtr starts, it investigates the network connection between the host mtr runs on and HOSTNAME. by sending packets with purposly low TTLs. It continues to send packets with low TTL, noting the response time of the intervening routers. This allows mtr to print the response percentage and response times of the internet route to HOSTNAME. A sudden increase in packetloss or response time is often an indication of a bad (or simply overloaded) link. After installing this program please run the command mtr google.com or even mtr walla.co.il mtr ynet.co.il I got in all 3 urls ~75% packet loss at ip 213.57.43.199 and at 213.57.43.22 (or 14) another ~20% packet loss. Please inform me how many people suffer from this problem and who is their isp. Mine is 012. but the ips mentioned belong to hot. I already talked with a nice technician at hot and he promissed to give me an answer. Meanwhile at 012 tried to help me and in the end he told me it's a operating sytem problem. I just hate to hear such stupid excuses. I tried bot with and without iptables and it's the same. Instead of solving the problem they blame the OS. And all this happens with router or without. Besides that, the first IP is actually border gateway. Thanks for your help = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] -- EE 77 7F 30 4A 64 2E C5 83 5F E7 49 A6 82 29 BA ~. .~ Tk
Re: installing CentOS/RHEL without CD using PXE?
Dotan Shavit wrote: On Friday 28 March 2008, Hetz Ben Hamo wrote: without disk-on-key (the ISO image itself is about 3.6 GB) Actually, you can use disk-on-key to install a full distribution using a network install (e.g. http://www.us.debian.org/distrib/netinst) AFAIK Redhat based distributions don't have network installations. Only PXE boot (just a copy of the right files from the first CD). -- Lior Kaplan [EMAIL PROTECTED] = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: what can be done against isp blocking ports
On Thu, Mar 27, 2008 at 5:46 AM, Gilboa Davara [EMAIL PROTECTED] wrote: On 3/25/08, Maxim Veksler [EMAIL PROTECTED] wrote: [snip] I can verify this is an ISP issue, because : There used to a way to create an ad-hoc ADSL connection to Bezeq, and select an ISP from a web page. I can't recall the procedure, but this a very usful way to check for local misconfiguration claims by the ISP. My two recent favorites from an ISP support tech: 1. You can have dhcp on you cable connection, it requires an electronic chip installed in the computer. 2. Remove all antivirus and firewalling and connect to the internet. [snip] We've spoke to 012 representative, it's always the same automatic answer they have been instructed to provide: Problem with your computer, spyware, virus, wrong usage No point in arguing with the poor technical support guy because he a. Can't help you. B. Probably does not have the slightest clue about what you are talking about. I'm seeing the same. (Computer games; P2P; etc). I did manage to scare one of the poor tech support people into letting me speak to one on their senior support engineer that more-or-less confirmed that 012 is throttling/blocking/resetting/etc traffic during peak hours, but refused to name the protocols/ports being blocked. This leads me to the conclusion that nothing can be done besides leaving the company that insists on hurting it's costumers and join Bezeq, who may or may not be the best ISP around but at least they aren't using technology to hide cowardly acts from their users. I for one have lost my faith in 012 completely, I will not let this slip and have already started the procedure of disconnecting from 012 ASAP. I will also make sure all my friends + parents + who ever I can advice on ISP choosing to reconsider their decision based on the above. Maxim. /+1. (Currently ISP-shopping) Though I'd venture and guess that it's just of matter of time before they all start traffic shaping. - Gilboa = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: SSHD for Windows
On Thu, Mar 13, 2008 at 2:47 PM, Aviv Greenberg [EMAIL PROTECTED] wrote: http://www.freesshd.com/ Thanks, this and http://sshwindows.webheat.co.uk/ are on my short list. CopSSH requires to much maintenance on the machine. All seem to be based on OpenSSH and Cygwin, which means a local passwd file is required. With this can be automated using a cron job. On 3/12/08, Gil Freund [EMAIL PROTECTED] wrote: Hi, I am looking for an SSHD implementation on Windows, prefreably one that does not depend on an installation of cygwin or SFU, and will use Windows authentication and command prompt. Any ideas? Thanks Gil = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: installing CentOS/RHEL without CD using PXE?
Thanks all for the help. I've created some PXE server (tftpboot, dhcp etc..) and installed the CentOS. Everything works perfectly except the wifi, but thats another issue. Thanks all for your help. Hetz = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: what can be done against isp blocking ports
On 30/03/2008, at 00:14, Gil Freund wrote: My two recent favorites from an ISP support tech: 1. You can have dhcp on you cable connection, it requires an electronic chip installed in the computer. I have to know, what was the context that gave birth to this gem? --sambo = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: SSHD for Windows
One thing about the Windows SSH port and password-less login. If you are trying to access a network resource from your windows server (lets say modify an entry in Active Directory from the command line), it will not work as you wont have a valid Kerberos ticket. (you can work around it with expect command). Ohad On Sun, Mar 30, 2008 at 5:26 AM, Gil Freund [EMAIL PROTECTED] wrote: On Thu, Mar 13, 2008 at 2:47 PM, Aviv Greenberg [EMAIL PROTECTED] wrote: http://www.freesshd.com/ Thanks, this and http://sshwindows.webheat.co.uk/ are on my short list. CopSSH requires to much maintenance on the machine. All seem to be based on OpenSSH and Cygwin, which means a local passwd file is required. With this can be automated using a cron job. On 3/12/08, Gil Freund [EMAIL PROTECTED] wrote: Hi, I am looking for an SSHD implementation on Windows, prefreably one that does not depend on an installation of cygwin or SFU, and will use Windows authentication and command prompt. Any ideas? Thanks Gil = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: what can be done against isp blocking ports
On Sun, Mar 30, 2008 at 1:25 AM, sammy ominsky [EMAIL PROTECTED] wrote: On 30/03/2008, at 00:14, Gil Freund wrote: My two recent favorites from an ISP support tech: 1. You can have dhcp on you cable connection, it requires an electronic chip installed in the computer. I have to know, what was the context that gave birth to this gem? Netvision made some changes to it's L2TP server which caused connectivity issues to one of our users at home. After getting conflicting (and apparently incorrect) information on dialup setting, I asked them simply to switch her to DHCP, and avoid the hassle of end-user configuration. --sambo = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: SSHD for Windows
On Sun, Mar 30, 2008 at 5:04 AM, Ohad Levy [EMAIL PROTECTED] wrote: One thing about the Windows SSH port and password-less login. If you are trying to access a network resource from your windows server (lets say modify an entry in Active Directory from the command line), it will not work as you wont have a valid Kerberos ticket. (you can work around it with expect command). Interesting, is that in any SSH implementation? Does this mean I am not running under the user context I think I am? Ohad On Sun, Mar 30, 2008 at 5:26 AM, Gil Freund [EMAIL PROTECTED] wrote: On Thu, Mar 13, 2008 at 2:47 PM, Aviv Greenberg [EMAIL PROTECTED] wrote: http://www.freesshd.com/ Thanks, this and http://sshwindows.webheat.co.uk/ are on my short list. CopSSH requires to much maintenance on the machine. All seem to be based on OpenSSH and Cygwin, which means a local passwd file is required. With this can be automated using a cron job. On 3/12/08, Gil Freund [EMAIL PROTECTED] wrote: Hi, I am looking for an SSHD implementation on Windows, prefreably one that does not depend on an installation of cygwin or SFU, and will use Windows authentication and command prompt. Any ideas? Thanks Gil = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] = To unsubscribe, send mail to [EMAIL PROTECTED] with the word unsubscribe in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
