Server :: Setting Fix IPAddress And Subnet?
Dec 2, 2009I am new to Ubuntu 9.10. I have installed Ubuntu and it's working fine. I would like to set fix IPAddress and Subnet.
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Networking :: Setting Up A Subnet On A Wireless Network?
Sep 13, 2010I'm living at a friend's right now, and he's got a wireless access point in the house that I set my laptops wlan0 interface to route through the eth0 to my desktop. It's been working fine for internet sharing and internal networking ( ssh and ftp ) between the laptop and the desktop, but there's a problem with both subnets being able to communicate with each other, and I haven't been able to solve it with DNAT either.
The wireless access point is 192.168.0.1 and has its own lan on 192.168.0.0/24 of which my laptop is 192.168.0.5. I setup the little subnet I created by routing with the laptop to 192.168.1.0/24 and my desktop is 192.168.1.50. With shorewall I can configure iptables to DNAT all of my ssh traffic destined to 192.168.0.5 to 192.168.1.50, but the problem seems to occur when ssh on my desktop fails to connect rather than the DNAT failing.
Using iptraf I've seen that all of the routing does work properly, because I can see on the connection in iptraf that only the SYN packet is being sent from a 192.168.0.x address, there is no ACK packet sent back. I believe this is because in the connection dialog it always shows a 192.168.0.x ip as the source of the connection, but I don't have a route to 192.168.0.0/24 from 192.168.1.0/24 setup and I'm unsure of how to do so.
I'm pretty much in over my head because I don't know what is wrong, I thought it should work like this. Everything else from port configurations, to the configurations of the software itself seems fine so I don't think it's anything like that preventing a connection, but I can't think of what it would be aside from the lack of routing between each subnet.
Is there anyway to just add a route so that 192.168.1.0/24 and 192.168.0.0/24 can communicate with each other directly? I know there should be, I'm just not at all sure how it would be done.
Server :: NameVirtualHost IPaddress:80 Is Getting Defined More Than Once
Feb 10, 2010Ho do I modify the configuration /etc/httpd/conf.d/turbopanel.conf to remove the extra NameVirtualHost IPaddress:80? When I restart apache I'm getting the following error
[root@ip-208-109-184-220 ~]# apachectl restart
[Wed Feb 10 10:56:38 2010] [warn] NameVirtualHost 208.109.186.16:80 has no Virtu alHosts
[Wed Feb 10 10:56:38 2010] [warn] NameVirtualHost 208.109.186.16:80 has no Virtu alHosts
[Wed Feb 10 10:56:38 2010] [warn] NameVirtualHost 208.109.186.16:80 has no Virtu alHosts
[code]....
Ubuntu Servers :: How IPAddress Can Hit Server Yet Not Appear In ANY Logs
Oct 31, 2010Since Port 80 and 443 are the only ports I have open, how is it that an IPAddress can hit my server yet not appear in ANY logs ?
View 9 Replies View RelatedNetworking :: VLAN With 2 Router And 2 Subnet - Is Device In Different Subnet Works
Jul 22, 2011I have TWO L3 + router switch (say switch1 and switch2). I created VLAN100 with VLAN ID 100 in both the switches. I created router 192.168.1.1/24 in Switch1. I created router 192.168.2.1/24 in Switch2. Switch1 is connected with 1.x/24 PCs. PCs are configured with 1.1 gateway. Switch2 is connected with 2.x/24 PCs. PCs are configured with 2.1 gateway. Both Switch1 and switch2 are connected by a trunk to carry VLAN100 data.
1)I have few PCs of 1.x connected to say Switch1 Is it possible for PC with IP 192.168.1.100(x) to ping PC with IP 192.168.2.100(y)?What are the configuration required in both switches to make them communicate ? All the device in both the subnets should ping/communicate with each other.
2)Move PC (192.168.1.100) to switch2. Move PC (192.168.2.100)to switch1.What will happen when PC(1.100) ping (2.100) and vice versa?What will happen when PC(say 1.80 in switch1) pings PC (say 1.100 in switch2) and vice versa? What will happen when PC(say 1.80 in switch1) pings PC (say 2.100 in switch1) and vice versa?
Networking :: Can't Browse Computer Of One Subnet From Another Subnet
Jul 4, 2011I installed Redhat Enterprise linux server5. it has two LAN card and two subnet connected to these two LAN card. i can browse network from these two network easily. But i created VLAN on one network card.Now i cant browse network from these VLAN subnet.
View 3 Replies View RelatedUbuntu Networking :: Change Subnet Mask "ONLY", Without Touching Any Other Setting?
Apr 5, 2010I am using ubuntu Lucid and connected to a network with windows machines.Our network admin changed some settings in the network, and all machines need to change their subnet masks to access local machines (e.g. I am getting "unable to mount" message when I try to connect other Windows PC's on the network.)
If I open the connections panel, and "Edit" the "Auto eth0", I can get: IPv4 Settings -> Method -> Manual -> Addresses -> Add .And I am pretty sure I will put new subnet mask address into "Netmask" box, what to put others? Namely:
IP Address, Netmask, Gateway and below:
DNS Servers, Search Domains
I can get some info about my network connection by right clicking network icon on the panel, and select "Connection Information" Tried to fill manual settings with some of those info (the ones made some sense to me) but I still cannot mount windows network drives, plus my internet connection dies.So, is there any way to change Subnet Mask "ONLY", without touching any other setting.
CentOS 5 Server :: TFTP-server Unable To Send Files To Clients Outside It Subnet?
Sep 9, 2011I have tftp-server running on Centos 5. Clients which are on the same subnet as the server are able to get and put without problems. I have a client that is across the internet that is having trouble getting files from my tftp server. A tcpdump reveals that the client is requesting the same file over and over again. In /var/log/messages, I am see the following error repeated over and over until the client finally gives up.
localhost in.tftpd[12727]: tftpd: read: No route to host
Networking :: 2 Subnet 1 Httpd Server And 2 Dns Server How To Config?
Jun 14, 2009I would like to setup 2 linux machine each with two ethernet cards, and need to connect to two subnet e.g. 192.168.*.* and 10.0.*.* . If one linux machine out of order, the other will take over all the services(1 httpd and two named(192.168.*.1 and 10.0.0.1 as server ip). What network config is best and easy to failover to other machine?
View 1 Replies View RelatedServer :: DNS Server Not Reachable From Different Subnet Intermittently
Aug 27, 2010We are having two DNS servers working as master and slave in our DMZ network subnet.DMZ network consist other servers also, but only the DNS servers intermittently becomes unreachable (no ping response) from different subnets whereas the internal communication (within subnet) happens at that time.From the DNS server we are unable to ping gateway ip also when the issue arises.We tried changing the port where DNS servers connected in DMZ switch and even reformatted the OS and reconfigured DNS but nothing seems to be working.We even tried changing the IP address of the server but after few days the New IP Address also gets affected
We google around a lot tying to fix the issue but no solution has yet come up.We are not even sure whether it is server issue or a network issue.
Server :: DHCPD: Subnet On A Different VLAN
Jun 8, 2010I am trying to provide dynamic IP addresses for devices that are on a different VLAN (101). The server is currently providing 172.17.x.x/16 range for its own VLAN (417). My server is RHEL4 and DHCPD is version 3.0.1. The core switch (Cisco 3750) is configured with ip-helper on VLAN 101 interfacce. Here is my dhcpd.conf file:
authoritative;
ddns-update-style ad-hoc;
omapi-port 7911;
shared-network eth1
[code].....
However my laptop on the VLAN 101 keeps getting IP of 172.17.x.x/16 range..
Server :: How To Configure Reverse Zone For X.x.x.x/18 Subnet
Feb 24, 2011how to configure reverse zone for x.x.x.x/18 subnet ,all the example on the internet are for /24 or /16 subnets?
View 9 Replies View RelatedServer :: Getting Samba Shares To Work Across Subnet Boundaries
Jul 8, 2011My environment in a nutshell is like this:
- I'm a member of a Windows AD domain environment that spans many different subnets.
- My client workstation (Windows XP) is part of this domain and resides on one subnet.
- The server I'm trying to get Samba working on (SLES 10) is part of the same domain but resides on a different subnet.
- I want to access shares on the SLES 10 box from my workstation.
Here is what does work:
1. I can ping the workstation from the SLES box, both by hostname and ip.
2. I can ping the SLES box from my workstation, both by hostname and ip.
3. netstat -an shows that the SLES box is listening on ports 139 and 445.
4. I can telnet from my workstation to the SLES box on ports 139 and 445.
5. Output from smbclient -L coolserver (hostname obfuscated):
Code:
Anonymous login successful
Domain=[COOLDOMAIN] OS=[Unix] Server=[Samba 3.5.8-30.4-2516-SUSE-CODE10-x86_64] .....
Code:
Enter cooluser's password:
Domain=[COOLDOMAIN] OS=[Unix] Server=[Samba 3.5.8-30.4-2516-SUSE-CODE10-x86_64]
smb: >
So, cross-subnet communication seems to be working in a general sense and I have verified that my share is present and accessible by my chosen user id.
Here's what doesn't work (from the workstation):
1. Output from net view \coolserver:
Code:
System error 64 has occurred.
The specified network name is no longer available.
2. Output from net view \coolservercoolshare:
Code:
System error 5 has occurred.
Access is denied.
3. Same output as above if I try to connect via IP.
However, when I run any of the above commands from my workstation, I see the following in log.smbd on the SLES box:
Code:
coolworkstation (10.49.140.36) connect to service coolshare initially as user cooluser (uid=12171, gid=500) (pid 29039)
[2011/07/08 00:39:29.098422, 1] smbd/service.c:1251(close_cnum)
coolworkstation (10.49.140.36) closed connection to service coolshare
I'm not really sure how to interpret this because those are the exact same entries that get logged when I connect to the share locally, via the smbclient utility on the SLES box, which works fine... but from the Windows box I get the "Access is Denied" or "The specified network name is no longer available" errors. I also occasionally see this in log.smbd:
Code:
[2011/07/08 01:01:19.858308, 1] smbd/server.c:240(cleanup_timeout_fn)
Cleaning up brl and lock database after unclean shutdown
[2011/07/08 01:01:33.828692, 0] printing/print_cups.c:108(cups_connect)
Unable to connect to CUPS server localhost:631 - Connection refused
[2011/07/08 01:01:33.832127, 1] smbd/server.c:282(remove_child_pid)
Could not find child 29781 -- ignoring
I don't know if that is relevant. I created the Samba user via the smbpasswd utility and my smbusers file maps the system user directly to the Samba user, both of which have the same password. Here is my smb.conf:
Code:
[global]
workgroup = COOLDOMAIN
netbios name = coolserver
domain master = no
preferred master = yes
local master = yes
wins support = no .....
My workstation and the SLES box are both pointing to the same WINS server, which services the entire domain (which is also one of the DC's and one of the DNS servers). I'm really not sure what's going on. I'm guessing it probably has something to do with the subnet boundaries or the WINS configuration or something along those lines. I just don't understand because the smb daemon seems to be logging "successful" sessions from my workstation... but then the session just insta-closes.
CentOS 5 Networking :: DHCP Multi-Subnet From Single Server?
Oct 24, 2010I've got a bit of a question. My network is laid out like this:
The role assignments are thus:
Firewall - sorts out the passing through to the 3 different networks, and acts as the traffic proxy.
Windows 2003 server - Does Active Directory and DNS
CentOS server - FTP and DHCP
Now, my problem is I need the CentOS server to be able to assign IP address to both networks, however, the CentOS server can *ONLY* be connected via the one interface to the firewall. It needs to assign the Windows 2003 server and the eth0 of the firewall an IP address via static DHCP, but it also needs to able to assign the clients dynamically via any address in the 10.23.1.0/24 range. I was thinking that I would be able to create static only assignments for the servers via their MAC addresses, and only have 1 dynamically assignable entry for the clients, and then get the firewall to allow ports 67 and 68 to flow freely between eth0 and eth1, but I wasn't entirely sure of the best way to do all this.
CentOS 5 Server :: DHCP Config ( No Subnet Declaration For Eth0 )?
Apr 1, 2011I had a server that I use for Radius DNS and Trying to put DHCP on it I have My pool in it seems right. I have 2 adresses aliased one being a helper IP that the router will send the request to. When I try to start the dhcp server I get the following.
Mar 31 14:33:11 rad2 dhcpd: No subnet declaration for eth0 (76.164.173.2).
Mar 31 14:33:11 rad2 dhcpd: ** Ignoring requests on eth0. If this is not what
Mar 31 14:33:11 rad2 dhcpd: you want, please write a subnet declaration
Mar 31 14:33:11 rad2 dhcpd: in your dhcpd.conf file for the network segment
Mar 31 14:33:11 rad2 dhcpd: to which interface eth0 is attached. **
[Code]...
Ubuntu Servers :: Config DHCP Server To Assign A Different Subnet For VPN Users?
Apr 4, 2010I'm establishing a server that runs DHCP server, NAT gateway and VPN server. It have two physical interfaces, one for intranet and one for internet. The NAT gateway will give internet access for intranet. Another site will connect to this server by VPN. I need the server to assign a different subnet for that site other than the local site. Do anyone know how to config the DHCP server? Should I config the client classing, and how to do it?
View 3 Replies View RelatedUbuntu Networking :: Ltsp Server Subnet - Log Clients To The Parent Domain?
Mar 10, 2011I have an Edubuntu server with two nics joined to the primary windows domain and I can log on with domain credentials and everything is AOK. I used LikewiseOpen 6 to join the server to the primary domain. So, on my Edubuntu server eth1 is connected to the primary domain and has a static IP. eth2 also has a static IP and is the DHCP for the thin client subnet, connected to a switch. IP forwarding is enabled.
DOMAIN - eth1 - Edubuntu Server - eth2 (SUBNET) - switch - clients
So far, so good: I can log on the thin clients with one of the local accounts specified on the Edubuntu server and with that account I can surf the net and, if I supply domain credentials, browse the primary domain. Problem I have is:
I can't work out how to log on to the primary domain with a Active Directory account directly from a thin client. If I try DOMAINuser to log on, after giving the password, the password screen refreshes and 'domainuser@11.*.21.*'s password' appears under the blank password box. The IP in that message is the IP for the subnet and not the primary domain. I feel like I'm miss-understanding some basic simple step but I just can't figure it out.
Networking :: Ping The Ipaddress (192.168.1.230,192.168.1.1,192.168.2.1,192.168.2.1 57)?
Dec 15, 2010I have a router which have 4 ethernet ports(eth0,eth1,eth2,eth3,eth4 ) & One ADSL Line & One USB, I need to configure My router eth3 as a WAN & eth0 as a LAN ... using iperf , I am going to findout test a my Application(using iptables) whether my application is correct or wrong ...As of now I configured like server pc1(192.168.1.230)--->eth0(gw)(192.168.1.1)Router--eth3(gw)(192.168.2.1) -->pc2(192.168.2.157)...For eth3 as a WAN and eth0 as a LAN.... But I am not able to ping between two pc's..From router I can able to ping This ipaddress (192.168.1.230,192.168.1.1,192.168.2.1,192.168.2.1 57)
View 2 Replies View RelatedSoftware :: Possible To Trace Ipaddress Manually?
Sep 6, 2010it is possible to trace ipaddress manually.Wondering whether a bash script could do the same without manual intervention. Kindly enlighten on this topic.
View 2 Replies View RelatedNetworking :: DHCPDECLINE Of Ipaddress From Mac Via Interface Not Found
Oct 15, 2010My windows XP computer cannot get an IP address from the Ubuntu 10.04 DHCP server. It is configured on the DHCP server to receive a static address outside the main DHCP pool.
Partial config:
Quote:
subnet 192.168.168.0 netmask 255.255.255.0 {
pool {
failover peer "dc02";
range 192.168.168.1 192.168.168.164;
[code]....
The Windows machine seems to think there is already another computer on the network with 192.168.168.178, but it's wrong: there is no such address on the network.
Networking :: Unable To Get The IPaddress For Wifi On RHEL5
Apr 27, 2010I'm new to Linux, i have couple of setups like
1. RHEL5 (2.6.18-128.el5) running fine on VMware(6.5v)
2. RHEL5 (same version of ker) running on Laptop (DELL Latitude D710)
there is a wireless modem which running at home with that i was being able to access the internet from VMware image running with RHEL5.
BUT internet does not work from the laptop. Network manager are running on both VMware image and Laptop.. What is the steps i need to follow to get WiFi Enabled so that it should pick the ipaddress from Wireless Modem to get internet access to my laptop.
General :: Find Out Internet Usage By Ipaddress?
Apr 11, 2010We are using squid proxy server for accessing Internet in RHEL4.
How to find out internet usage by ipaddress?
Is it possible in linux?
General :: Telnet Ipaddress Port Not Connecting?
Nov 11, 2009In a remote machine port 25 is open its enabled in firewall also...but not able to connect through telnet..why ?
netstat -an | grep 25
Code:
tcp 0 0 0.0.0.0:44525 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
[code]....
Code:
telnet 172.17.65.206 25
Trying 172.17.65.206...
telnet: connect to address 172.17.65.206: No route to host
Fedora Networking :: Access Externally With Hostname Instead Of IPAddress ?
Aug 16, 2011The details of "how to access externally with hostname instead of IPAddress in fedora"
View 1 Replies View RelatedNetworking :: Iptables Script - Define A Dynamic IPaddress?
Dec 25, 2008in my iptables script I define the environment like this:
Code:
# ENVIRONMENT
# Private interface
IF_PRV=eth1
[code].....
if I give the IF_PUB interface the DYNAMIC IPaddress assigned by my ISP how can I define it in IP_PUB and also the NET_PUB so I can then use it for the firewall rules.
exemple rule:
Quote:
iptables -t nat -A POSTROUTING -s $NET_PRV -o $IF_PUB -j SNAT --to $IP_PUB
General :: Multiple Port Forwards With Same Router Ipaddress?
Aug 9, 2011I have forwarded ssh and rdp protocols in the router which is in remote location. And i aslo configured dhcp reservation for my windows server's ipaddress. I have added that reserved ipaddress of windows server in the RDP port forwarding ip. And i connected to windows server through remote desktop with the ipaddress of the router because i needed a public ipaddress to connect. And now i am going to add my linux servers ip also to dhcp reservation and forward ssh port and give that reserved ipaddress. can i connect to linux server with same public ip that i used to connect for windows server?
View 1 Replies View RelatedRed Hat :: How To Know Ipaddress Of The Machine Which Is Broadcasting Message In Telnet Sessions
Aug 5, 2010there are many telnet sessions with same login. somebody is always broadcasting message how to know the ipaddress of that machine.
View 1 Replies View RelatedGeneral :: Finding Ipaddress Of The Device Connected With System In Ubuntu?
Mar 25, 2010How to find ipaddress of the device connected to the system.
View 14 Replies View RelatedUbuntu Networking :: Ipaddress Of Systems \ Ip Address Is Given Manuallyto Connect Each For Lan Connection?
Mar 15, 2011In my working environment have 40 system .Its ip address is given manuallyto connect each for lan connection .40 are not using ubuntu while other using windows .My question is there any package to trace ips of entire system
View 9 Replies View RelatedNetworking :: Set An Static Ipaddress On Network-scripts But Dynamic Ip Shows On Ifconfig?
Jan 27, 2010I recently installed fedora 12 in my server where I had a page published in my local net by tomcat, and I was looking on the Internet how to set up an static ip address and this is what I did
on /etc/sysconfig/network-scripts/ifcfg-eth0
# Broadcom Corporation NetXtreme BCM5751 Gigabit Ethernet PCI Express
#
# File: ifcfg-eth0
[code]....
then I can access via ssh by two addresses the one I got from dhcp (10.17.148.223) and the static one (10.17.148.26) I put ifconfig and and 10.17.148.223 appear on eth0 I restart my server and I just can access from 10.17.148.223 I have to put
ifdown eth0
ifup eth0
Again...to access by my static ip, y can access my page by its dns on my server, but I cant access from other computer...so, I guess when my static adress appears on ifconfig I would be able to access my page from other computer...