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  • Ubuntu cannot access internet, LAN is fine

    - by Kevin Southworth
    I have an Ubuntu 8.04 LTS server that is directly connected to our Comcast Business Gateway modem and I have configured it with 1 of our 5 allotted Static IPs. My other machines on our LAN can connect to this server (via ssh, web, ping, etc.) but I cannot access this server from outside our network, and this machine cannot get out to the internet either (ping google.com fails with unknown host). Here is my /etc/networking/interfaces file: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 173.162.54.19 netmask 255.255.255.248 broadcast 173.162.54.23 gateway 173.162.54.22 and my /etc/resolv.conf: nameserver 68.87.77.130 nameserver 68.87.72.130 output from sudo route -n: Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 173.162.54.16 0.0.0.0 255.255.255.248 U 0 0 0 eth0 0.0.0.0 173.162.54.22 0.0.0.0 UG 100 0 0 eth0 I have a Windows 2008 machine with an almost identical Static IP, static DNS setup and it works correctly, can access it within the LAN and also from public internet, the Windows machine and the Ubuntu machine are both directly connected to the Comcast Business Gateway. I have tried rebooting Ubuntu, rebooting my Comcast modem, but nothing seems to make it work. I'm an Ubuntu noob, is there some other config I need to apply to make this work? UPDATE: Yes I am able to ping my default gateway 173.162.54.22 output of iptables --list -n: Chain INPUT (policy DROP) target prot opt source destination ufw-before-input all -- 0.0.0.0/0 0.0.0.0/0 ufw-after-input all -- 0.0.0.0/0 0.0.0.0/0 Chain FORWARD (policy DROP) target prot opt source destination ufw-before-forward all -- 0.0.0.0/0 0.0.0.0/0 ufw-after-forward all -- 0.0.0.0/0 0.0.0.0/0 Chain OUTPUT (policy ACCEPT) target prot opt source destination ufw-before-output all -- 0.0.0.0/0 0.0.0.0/0 ufw-after-output all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-after-forward (1 references) target prot opt source destination LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix `[UFW BLOCK FORWARD]: ' RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-after-input (1 references) target prot opt source destination RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:137 RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:138 RETURN tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:139 RETURN tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:445 RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:67 RETURN udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:68 LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix `[UFW BLOCK INPUT]: ' RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-after-output (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-before-forward (1 references) target prot opt source destination ufw-user-forward all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-before-input (1 references) target prot opt source destination ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ctstate RELATED,ESTABLISHED DROP all -- 0.0.0.0/0 0.0.0.0/0 ctstate INVALID ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 3 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 4 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 11 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 12 ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 icmp type 8 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp spt:67 dpt:68 ufw-not-local all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT all -- 224.0.0.0/4 0.0.0.0/0 ACCEPT all -- 0.0.0.0/0 224.0.0.0/4 ufw-user-input all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-before-output (1 references) target prot opt source destination ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 state NEW,RELATED,ESTABLISHED ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 state NEW,RELATED,ESTABLISHED ufw-user-output all -- 0.0.0.0/0 0.0.0.0/0 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-not-local (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type LOCAL RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type MULTICAST RETURN all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type BROADCAST LOG all -- 0.0.0.0/0 0.0.0.0/0 limit: avg 3/min burst 10 LOG flags 0 level 4 prefix `[UFW BLOCK NOT-TO-ME]: ' DROP all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-user-forward (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-user-input (1 references) target prot opt source destination ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:80 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:22 ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:22 RETURN all -- 0.0.0.0/0 0.0.0.0/0 Chain ufw-user-output (1 references) target prot opt source destination RETURN all -- 0.0.0.0/0 0.0.0.0/0

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  • DNS lookup aliasing of hostnames (not IP aliases), probably via dnsmasq

    - by intuited
    I'd like to be able to set up a host, say "eg", to be an alias to some server on the internet, say "example.example.com". I just need this functionality to be available from my local machine. I'm running dnsmasq on that machine, which is running ubuntu 9.10. Is there a way to configure dnsmasq or the resolver subsystem (including avahi) to resolve that alias hostname via the actual hostname, so that eg will resolve to the ip address of example.example.com?

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  • Connect to a webserver running in Windows 7 using IP from a brower

    - by Optimus Prime
    I'm not sure if this is the proper place to ask this question. Here is my issue I'm using windows 7 and i have installed Zope Server.(Zope is python web framework which has a built-in server). I can connect to this server from my browser by typing, localhost:8080 But if i try to connect this server from another machine using my IP or even from my own system it doesn't work. ie xxx.xxx.xx.xxx:8080

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  • Internal Linux machine with Apache that I can access by IP address but not computer name

    - by Parris
    I have an Ubuntu machine running LAMP. While on the machine I can type localhost or the computers name to access htdocs. From another machine I can only access the machine via its IP Address. This just started happening recently when someone rearranged the network cables and removed a hub sitting between the machine and the network, which makes me think it wasn't all the stable to begin with anyways. Any suggestions on where I should start looking?

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  • NetDiag + TCP Blocking?

    - by CrazyNick
    We are facing some issue with the sharepoint 2007 timer jobs everyday at a specific time, so decide to track the tcp blocking informartion during those hours using NetDiag tool. We are not able to find the required information if we uses "netdiag /test:ipsec", what is the command that can be used to pull the TCP blocking information and how to configure it? if i ran the command "netdiag /test:ipsec /debug" it is returning "IP Security test . . . . . . . . . : Skipped", what does it mean?

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  • Why Can't Computers Off My Network See the Site?

    - by nmagerko
    Have just set up Apache, PHP, MySQL, etc. on my Ubuntu OS, and I was wondering why computers that are not on my network can not see the basic index.html that Apache uses as the default. I set up the static ip address for my computer, and I use 192.168.1.100 for computers to view the simple site. Is there something I am missing that will allow others to access my site? (It is REALLY simple; no graphics, CSS, etc.)

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  • how to figure out why sites on my server aren't loading

    - by Derek
    I seem to randomly receive "page cannot load, cannot connect to server" errors for sites on one of my servers. when this happens, it seems to only happen on certain IPs or IP ranges at a time. I say this because while I'll get the error from my home laptop I'll be able to access the site fine from my work computer or from an offsite VPS. DNS records should already be fully propagated as these records were updated months ago. I have no idea how to diagnose what's going on. Is there a tool in cpanel or outside on the web that can help me figure out what's going on?

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  • Grizzly server - works with IP, but not with domain name

    - by Hitchhiker
    I'm hosting a grizzly web service on a Windows 7 Pro machine (embedded in a regular Java process), and it is binding to http://my-domain-name. When trying to hit the service from another machine, requests to http://my-domain-name fail (fiddler shows error code 502), but requests to http://my-ip work. When the service runs on a Windows Server 2008 machine, this doesn't happen (both requests succeed). What could be the issue?

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  • Access my local server by hostname or servername

    - by S.M.09
    I have a local host server hosting a few applications in tomcat which comes through a apache proxy The client or User trying to access these application has to access them like 10.XXX.XXX.XX:8080/appName OR 10.XXX.XXX.XX/appName But I want to replace the ip address with soem other name related to my applications. But I cannot go and enter the host name of the server in each users /etc/host Nor do I want to be setting up DNS. Is there another way to do this. I am using ProxyPass XXX YYY to redirect all applications of tomcat to port 80

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  • Looking for Recommendations on a Mid-Range IP KVM

    - by Joseph Sokoly
    I have currently been tasked with tracking down an IP KVM for our new data center, but I'm coming up blank on good reviews of KVMs. We're looking at a rack of 5 to 10 servers that would be hooked in. Does anyone have some recommendations on places to research KVMs, or have some of their own recommendations?

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  • PAM module for authentication by IP or other password-disabling module

    - by Robin Rosenberg
    I'm looking for a Linux pam module that accepts any password for connections from a specific IP. I don't want to disable passwords completely. I need it for migration from one imap server to another (cyrus to zimbra) without knowing every password. I used such a module some six years ago. That was for imap migration too. Unfortunately I cannot recall the name of the module and can't find it by other means either. Any pointers?

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  • can i use an ip-list include file for iptable blacklisting

    - by rubo77
    I would like to block all countries except mine in iptables, that is a lits with about 100.000 Entries. how can i define this blacklistfile in a script, so iptables blocks all those ip-ranges? maybe i can use http://www.ipdeny.com/ipblocks/data/countries/ that provides lists in the form 117.55.192.0/20 117.104.224.0/21 119.59.80.0/21 121.100.48.0/21 ... i want to be able to change the blacklistfile easily without having to change the iptables-script

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  • Exchange Server Address Resolving to Random String

    - by William
    I am running Exchange 2013 on Windows Server 2012 R2. When I add my exchange account to Outlook, it seems to work perfectly (sending/receiving email, syncing everything), but when I open the account settings it has the following set as the Server: [email protected] I would have expects this to be: mail.domain.com since this is the DNS A record pointing to the IP of my server. Where is it getting this server name?

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  • How to reply some request from which routes its came from?

    - by tacoen
    I wonder if we can reply some request from which route its came from? My Situation is like this: eth0 192.168.10.1 --> gw: 192.168.10.254 nm: 24 eth1 192.168.11.1 --> gw: 192.168.11.254 nm: 24 Since this two IP is on the same machine, normally when we ping to 192.168.11.1 from 192.168.10.2. This machine will not reply to 192.168.10.2 because 192.168.10.0/24 it's on eth0, and the packets where requested via eth1. Can I make it works? I'm using Linux ubuntu, and the application will be listen to eth1 only.

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  • Subnet address in apache access log

    - by m0ntassar
    I was inspecting my apache access logs(I use default combined log format) and I came a cross a wired entry 69.171.247.0 - - [22/Oct/2012:18:15:20 +0200] "GET /some site resources HTTP/1.1" 404 514 "-" "facebookexternalhit/1.0 (+http://www.facebook.com/externalhit_uatext.php)" As u see, this query come from a facebook robot that extract objects from site when somebody post a link. What I find weird is the logged ip address : 69.171.247.0 Does anybody know how is that possible ?

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  • Server 2003 Filter mobile devices via MAC

    - by msindle
    At one of my client's sites I need to keep my users unauthorized devices off the wireless. They all know the SSID and Password because many of them have laptops that need the wireless. I'm running out of IP address's and we have sent out numerous emails asking them to stay off, but like most users they ignore IT's email. I'm currently running Server 2003 as the GC/DC (but have 2008 servers in place) and 2 Netgear WNAP320. I've seen several posts similar to what I'm looking for but they seem to deal with Linux. My question is how do I go about doing this without migrating (scheduled for the end of the year) to a new server and is it possible to do this within Server 2003? Thanks msindle

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  • How to make all of my IPs works in HyperVM XEN?

    - by user758667
    I've installed HyperVM on CentOS 5.8 final to make XEN VPS. I have 5 IPs, and added them to an IPPool. They are from *.123 to *.126. But when I add Virtual machines, just the first one (which indicate to *.123 ip) works well. I mean I can ssh to it by "works well" and when I want ssh to the other ones ( *.124 *.125 ...) it says : ssh: connect to host *.124 port 22: Connection timed out after a while. I alos set gateway and netmask as it shows in my server IPAdresses for device eth0 (it doesn't make any difference if I set these or not, I get same error). What should I do now? Thanks.

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  • Exchange 2010: Send emails via STMP with custom From address to outside the domain

    - by marsze
    The requirement(s): (1) Connect to Exchange via STMP and (2) basic authentication and send emails with a (3) custom From address to (4) recipients outside the domain. I was able to get (1) - (3) working. I created a dedicated receive connector for this task and configured it like this: Permissions: ms-Exch-SMTP-Accept-Any-Recipient (for authenticated users) ms-Exch-SMTP-Accept-Authoritative-Domain-Sender (for authenticated users) ms-Exch-SMTP-Accept-Any-Sender (for authenticated users) Authentication: TLS Basic Authentication (without TLS) Exchange Server Authentication However, I'm still struggeling with (4): I can send with "fake" From addresses to recipients inside the domain. Also, I can send with the original From address to recipients outside the domain. Can you tell me what I'm missing, to configure Exchange to send emails with changed From addresses to recipients outside the domain? (Or is this even possible at all?) Thanks. UPDATE I have to correct myself: it seems to be working after all. There must be some issue with the mailbox I used for testing. It turned out it's working with other external mailboxes. However, I still have no idea what was different there... Anyways, you can take this as a documentation on how to configure Exchange in such a way ;)

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  • How can I have two web roots on one server, so I can point two domains to two different roots?

    - by Daniel F. Dietzel
    I usually ask my n00b questions on Stack Exchange, but now I'm setting up a VPS and have a question. My usual site.com points to my VPS's IP xxx.xxx.xxx.xxx. Now I have a different domain, and I'd like to point that to another location, say xxx.xxx.xxx.xxx/myname. However, when I try to add that as an "A" record in the DNS settings it won't let me. FYI I'm using chicagovps.net with ubuntu 11.10 and Nginx. Thanks!

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  • Change ISP and MX static ip but no mail

    - by Tim the Enchanter
    We have recently changed our ISP, I have changed the MX record for our domain name to point to the new external static IP address for the router on the new ISP's connexion but I am not getting any mail (though sending works). Do I just have to wait will the change propagates? I am slightly concerned because I can connect to the web email service made visible through the new router, but not actually receive email. Have I missed something?

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