help needed urgently with hostlookup failure ..please
Hello people, I am having problems with connecting my RedHat Linux box to the internet. I cannot seem to be able to even ping any other machine on the network. I do telnet localhost. I get localhost: Host name lookup failure. I tried telnet 127.0.0.1. It waits for some time and then says: telnet: unable to connect to remote host: Connection timed out . My /etc/hosts file reads like this : 127.0.0.1 localhost.localdomain Also when i restarted my machine, it waits for 5-10 minutes after coming to the Sendmail process and then finally reboots. Could you please help me out as I am not able to do anything about this for 2 days now. Help truly appreciated. Thanks Suhail. Do you Yahoo!? Yahoo! Search - Find what youre looking for faster.
Re: hostnamelookup failure ..please
hello , I am still not able to get my REDhat Linux box to connect to the internet. 1)I checked up /etc/xinetd.d/telnet . In that the flag disable is set to no. So, i think telnet is up n running. 2)When i say ifconfig, I get eth0 and lo as running with my eth0 mask being 255.255.252.0. 3)ifup eth0 does not give any error. 4)When I type route, I get * for gateway in all the rows. 5)When i type route -n, I get 0.0.0.0 for gatway for all rows. 6)my /etc/hosts file looks like this: 127.0.0.1 localhost.localdomain localhost Please help me out... Help truly appreciated Thanks Suhail. Rod Rodolico [EMAIL PROTECTED] wrote: Not sure about RedHat. However.1) Not being able to telnet to localhost may just mean that telnet is turned off. It is inDebian by default, if I remember right. Or, you could have firewall rules that prevent telnet.Try ping localhost and see if that works.2) Assuming localhost is up, look at ifconfig. Make sure your interface (eth0) is up. If not,make sure the the module for your network card is up (lsmod).3) Assuming your interface is up, type route to find your gateway. Try pinging your gateway.If you can get a return from your gateway, your part of the network is set up correctly. It isan issue with your provider.4) Assuming you can successfully ping your gateway, try pinging an external system by ip. Ifyou can do that, you are likely not resolving. Check /etc/resolv.conf and make sure you haveone or more nameserve rs defined.Rod Hello people, I am having problems with connecting my RedHat Linux box to the internet. I cannot seem to be able to even ping any other machine on the network. I do telnet localhost. I getlocalhost: Host name lookup failure. I tried telnet 127.0.0.1. It waits for some time and then says: telnet: unable to connect to remote host: Connection timed out . My /etc/hosts file reads like this : 127.0.0.1 localhost.localdomain Also when i restarted my machine, it waits for 5-10 minutes after coming to the Sendmail process and then finally reboots. Could you please help me out as I am not able to do anything about this for 2 days now. Help truly appreciated. Thanks Suhail. - Do you Yahoo!? Yahoo! Search - Find what your e looking for faster.-- Latest survey shows that 3 out of 4 people make up 75% of the world's population.-- To UNSUBSCRIBE, email to [EMAIL PROTECTED]with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] Do you Yahoo!? Yahoo! Search - Find what youre looking for faster.
help needed urgently with hostlookup failure ..please
Hello people, I am having problems with connecting my RedHat Linux box to the internet. I cannot seem to be able to even ping any other machine on the network. I do telnet localhost. I get localhost: Host name lookup failure. I tried telnet 127.0.0.1. It waits for some time and then says: telnet: unable to connect to remote host: Connection timed out . My /etc/hosts file reads like this : 127.0.0.1 localhost.localdomain Also when i restarted my machine, it waits for 5-10 minutes after coming to the Sendmail process and then finally reboots. Could you please help me out as I am not able to do anything about this for 2 days now. Help truly appreciated. Thanks Suhail. Do you Yahoo!? Yahoo! Search - Find what youre looking for faster.
measuring HTTP latency
Hi, I am doing a littleexperiment with DoS attacks,where I try to rate limit the number of outgoing SYN packets from the compromised machine. I need to calculate the effect of DoS on factors such as http latency. I tried tools like echo ping but it does not give me the tcp latency time with respect to a remote host. For example, echoping -w 1 -n 2 -v -S machine name just hangs up. ANy ideas of how to measure the http latency with this tool or some other tool. Also, could anyone tell me how one can measure DNS latency. Are there any tools for this ? Help truly truly apprecaited. Thanks, Suhail. Do you Yahoo!? Yahoo! Search - Find what youre looking for faster.
using echoping
Hi, I am trying to measure HTTP latency using echoping. But I cannot seem to be able to connect to remote hosts. It does connect when i use it for http addresses. Say my machine name is abc , I give echoping -w 1 -n 2 -v -S abc ..I get "Trying to connect to internet address 150.135.219.209 to transmit 6 bytes " then thats it.. Could anyone please tell me whats going on. Thanks. Hrelp truly appreciated. Suhail. Do you Yahoo!? Yahoo! Search - Find what youre looking for faster.
measuring HTTP latency
Hi, I am doing a littleexperiment with DoS attacks,where I try to rate limit the number of outgoing SYN packets from the compromised machine. I need to calculate the effect of DoS on factors such as http latency. I tried tools like echo ping but it does not give me the tcp latency time with respect to a remote host. For example, echoping -w 1 -n 2 -v -S machine name just hangs up. ANy ideas of how to measure the http latency with this tool or some other tool. Also, could anyone tell me how one can measure DNS latency. Are there any tools for this ? Help truly truly apprecaited. Thanks, Suhail. Do you Yahoo!? Yahoo! Search - Find what youre looking for faster.
using echoping
Hi, I am trying to measure HTTP latency using echoping. But I cannot seem to be able to connect to remote hosts. It does connect when i use it for http addresses. Say my machine name is abc , I give echoping -w 1 -n 2 -v -S abc ..I get "Trying to connect to internet address 150.135.219.209 to transmit 6 bytes " then thats it.. Could anyone please tell me whats going on. Thanks. Hrelp truly appreciated. Suhail. Do you Yahoo!? Yahoo! Search - Find what youre looking for faster.
HTTP latency ..urgent
Hi, I am performing an experiment of effects of DDoS attacks on certain metrics like HTTP web latency , DNS latency. I need to know how does one measure the HTTP latency(time between issuing a HTTP request and receiving the response) in Linux. I would also be happy if anyone could suggest any other metrics which one can measurethat would be affectedin a DDoSscenarios. Help truly truly appreciated. Thanks, Suhail. Do you Yahoo!? Yahoo! Mail SpamGuard - Read only the mail you want.
HTTP latency ..urgent
Hi, I am performing an experiment of effects of DDoS attacks on certain metrics like HTTP web latency , DNS latency. I need to know how does one measure the HTTP latency(time between issuing a HTTP request and receiving the response) in Linux. I would also be happy if anyone could suggest any other metrics which one can measurethat would be affectedin a DDoSscenarios. Help truly truly appreciated. Thanks, Suhail. Do you Yahoo!? Yahoo! Mail SpamGuard - Read only the mail you want.
help needed with firewall logging ..please
Hello,I need to know how can a firewall be tested against a SYN Flooder. Ihave the SYN flooder program and also configured my firewall. MyIPtables script against the SYN packets is the usual : $IPTABLES -N syn-flood$IPTABLES -A syn-flood -m limit --limit 50/s --limit-burst 104 -j RETURN$IPTABLES -A syn-flood -j DROP $IPTABLES -A OUTPUT -p tcp --syn -jsyn-floodNow how do i actually find out if the packets are being dropped. i.e where shud I chk my system log files to see the dropped packets ...I mean which file is it n under which dir .. And.. where shud I add the LOG prefix in the chains ? Please help me out as i desperately need to know this. Help trulyappreciated. Thanks .Suhail. Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online
help needed with firewall logging ..please
Hello,I need to know how can a firewall be tested against a SYN Flooder. Ihave the SYN flooder program and also configured my firewall. MyIPtables script against the SYN packets is the usual : $IPTABLES -N syn-flood$IPTABLES -A syn-flood -m limit --limit 50/s --limit-burst 104 -j RETURN$IPTABLES -A syn-flood -j DROP $IPTABLES -A OUTPUT -p tcp --syn -jsyn-floodNow how do i actually find out if the packets are being dropped. i.e where shud I chk my system log files to see the dropped packets ...I mean which file is it n under which dir .. And.. where shud I add the LOG prefix in the chains ? Please help me out as i desperately need to know this. Help trulyappreciated. Thanks .Suhail. Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online
