CentOS 5 Networking :: Unable To Get Internet Access To 5 Server

Jan 17, 2009

I've installed centos 5 on an old computer with success and it works great.I can access the web server hosted on the centos server from any computer on the wireless and wired local network. I can also use ssh (putty) and nx client from any computer on the local network (wired and wireless) to access the centos server.On the wireless router I've configured a port forwarding to the wireless network interface on the centos server. I can access the centos server from the outside (internet) through this port forwarding both through http and ssh or nx client.MY problem is that I can't access the centos server from the internet through the wired network interface. Any attempt to view a web page or login with ssh or the nx client will timeout.

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CentOS 5 Networking :: Unable To Access Internet?

Jul 4, 2010

On my Centos 5 box my internet won't work. I am unable to get update and I can't download any native programs. But I have Samba running and I am able to access all my files for my other computers.

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Ubuntu Networking :: The Phone Can Access The Internet Through The Computer Unable To Get Access To Https Sites, Like Webmails

Dec 31, 2010

I managed to configure my W890i phone to get access to internet through an ubuntu-based computer. It's very easy to use the phone to give internet access to the computer, but the opposite is quite more tricky. For that I've done the following

----On the phone---

-Set the USB network option to "through computer", so that the phone uses the computer's internet connection and not the opposite.

-Decide and set "Shared Network" parameters: user, pasword and workgroup.

-In "conectivity-> internet connection" set "allow local network" to "yes"

----On Ubuntu 10.04---

-Install samba, samba-client, smbfs, smbclient, firestarter and dhcp3-server

-Configure Samba (System-> Administration-> Shared folders): same workgroup as in the phone, add new user (the phone), passwd this new user. In my case the user was called "w890i" and the password given was the same.

-Once the phone is connected to the computer through USB (then select "phone mode"), a new connection appears in NetworkManager: usb0.The aim is to create a shared network that gives internet access to this device. Edit the IPv4 parameters of this new connection, set them to Manual and give an IP adress (192.168.0.1) and a subnet mask (255.255.255.0); the rest of the fields are left empty.Connect this network.

-Set firestarter to use dhcp3: sudo ln -sf /etc/init.d/dhcp3-server /etc/init.d/dhcpd

-Launch firestarter and follow the wizard. Set "allow internet shared connection", choose the device for the primary internet access, and then the device for the shared network (usb0). Then change the settings for firestarter: activate DHCP for local network, set IP to the one we gave before (192.168.0.1).

-Open dhcp3-server config file sudo gedit /etc/default/dhcp3-server And set INTERFACES="usb0"

-Set the policies of firestarter: in incoming connections, allow connections from the IP adress given to the phone (192.168.0.1). Then add rules for the ports that need to be open for this connection. I opened HTTP, HTTPS, SMB, SMTP, POP3, IMAP, IMAPS, DHCP for all the connections in the local network.

-Apply policies and start the firewall.

------------

After all this, the phone can access the internet through the computer. Two problems appeared:

1. I couldn't get access to https sites, like webmails. The phone gave a "communication error". But then I tried with Opera instead of the browser built in the phone's firmware, and I could finally get to https sites.

2. I couldn't retrieve mail, neither POP nor IMAP nor IMAPS. I thought it was a firmware problem again, and I tried out several mobile phone email clients written in java, but none of them worked.

So this is at the moment the problem. If I connect from the phone to the internet directly through 3G, the email clients work for all my accounts. I don't think it's a firewall problem, because the ports are opened for this connection

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CentOS 5 :: Can't Seem To Access The Internet From 5.4 Server

May 20, 2011

I am using a CentOS 5.4 server for Snort (it's actually using the easyIDS config). I'm trying to modify some things, and I've noticed that I can't seem to download any files. WGET, FTP, etc... all just time out. It's not a network firewall issue, as I've been monitoring the logs and see no blocked traffic, and other machines on the subnet can get outside with no problems. I checked the Cent firewall using the setup command, and it says it is disabled as well. I'm very new to linux, so I'm wondering how I can troubleshoot this? The wget and ftp errors just say the connection timed out, but I'm not sure why.

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CentOS 5 Networking :: Internet Access Slow In CentOS 5.3?

Sep 9, 2009

I have an MSI K9A2 Platinum mobo, which has a 10/100/1000 Fast Ethernet Realtek 8111B built-in, a D-Link DIR-655 Router and a DSL modem. Compared to Windows Visya and other Linux distros ( Fedora 11, Suse 11.1, Mandriva 2009.1 ) access to the internet is much slower. It seems there is a noticeable delay when running CentOS 5.3. before internet access kicks in each time I am surfing the web or updating my system.

Is there any way I can speed things up, or determine why CentOS 5.3 seems much slower ?

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CentOS 5 Server :: Allow Apache To Access The Internet?

Apr 21, 2009

We have Apache installed on CentOS 5.3 in our laboratory. Indeed the server is running fine for almost two years since it is actually the first CentOS 5 that was released just regularly updated. Now, most of our applications are custom made PHP applications and until now we somehow managed to avoid using PHP to fetch files that are on the internet itself. But now we are desperate because we need to allow PHP to fetch files through Apache but it seems as if Apache is not allowed to make a connection to the outer world. Additionally we use a proxy server to connect to the outer world so right at the beginning http_proxy is used to set that environmental variable. And for the root user it all works fine after that but it seems as if the apache user is not allowed to access the internet. Just to make a remark our web server can be accessed from the outer world so its a one way street for now.

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CentOS 5 Hardware :: How To Access To Server Over Internet To Bio

Feb 15, 2010

i want to buy a pci weasel, people told me i will have access to the server over internet with this board.Does anyone have any experience with this kind of card?How can i have access to server over internet to the bios,etc.

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CentOS 5 Server :: SSH Access Denied Over Internet?

May 28, 2010

I am getting an access denied when trying to log in via SSH to my home server with putty(windows) over the internet. I can use any user including root and get the same result. If I use my Android phone with the ssh terminal command I am able to successfully log in and use the server.

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Ubuntu Networking :: 10.04 - Unable To Access Internet Via LAN

Sep 22, 2010

I am using Ubuntu 10.04. My problem is that I am unable to access my internet using Ubuntu. My internet is running fine on Windows 7 installed on same system. I am a bit unfamiliar with Linux. I tried to configure my network settings but it didn't help. I have my system connected to my dsl router via LAN.

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Networking :: CentOS 5.5 - No Access To Internet

Oct 17, 2010

I have CentOS5.5, it has full access to internet until I did something to it I couldn't figure out. This is not a cable issue since I could ping and ssh to other machines within my lan. Apache is also running fine, which is probably irrelevant. When I type traceroute cnn, it simply hangs, later saying [URL]:
Temporary failure in name resolution
Cannot handle "host" cmdline arg '[URL]' on position 1 (argc 1)
This is a desktop version of CentOS5.5, when i do Administration - Network, it says eth0 is active and Primary and Secondary DNS are set correctly to my comcast DNS server at 68.94.15x.1

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Fedora Networking :: Completely Unable To Access The Internet?

Jun 16, 2009

Fedora 11 is completely unable to access the internet for some reason, and after some troubleshooting, I've determined the problem to my Motorola 2210 DSL modem. I know my connection is working fine, as it works perfectly in both Vista and 7. I've tried things such as grep 'Ethernet' /var/log/dmesg, filling in the information into the network settings manually, to no avail.

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Ubuntu Networking :: Unable To Access Internet DSL Connection

Jul 25, 2010

I have recently installed ubuntu 9.10. Earlier I had ubuntu 9.04. On that my internet was running perfectly well.After installation I created new connection as I had done for 9.04 version using "Network connections , Edit connections". However, after configuring connection(uname , password etc.) I wasn't able to access Internet.So I tried using "pppoeconf" utility. After using this now whenever I click on network connections applet on top panel , it shows in menu "device not managed".Can somebody point out what went wrong and what to do so as to be able to acess Internet in ubuntu?

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Networking :: Unable To See Shares On Samba Server - No Authentication Access Desired (open Access)

Jun 12, 2009

I've been running a Samba server under RedHat 8 for five years without a hiccup. I want to cut over to a F10 box but cannot get shares accessible. smbclient attempts fail over NT password error. SELinux is disabled. Server is visible on the network. Users require no password access to shared data.

smb.conf follows:

# Samba config file created using SWAT
# from UNKNOWN (>)
# Date: 2009/06/12 14:15:15

[code]....

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CentOS 5 Networking :: Can't Ping Or Otherwise Access Internet

Mar 14, 2009

I just downloaded and installed the latest Cent OS 5. I disabled SE linux, turned off the firewall, and selected the Server package options when installing. I plan on using this as a router/firewall between my internal network and the internet, as well as web server, etc. The first thing I did was to configure the two NICs, internal one with 192.168.7.1 address and the other with an address from my ISP (I have a static address, but I also tried to let the DSL router assign an address via DHCP). Everything looked fine, I checked /etc/resolv.conf and my routes. I was able to ping the DSL router from the server, but I was not able to do a ping or lookup on anything outside my network. I tried host, dig, nslookup, etc, no luck. Obviously then, I was not able to browse the net with firefox.

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CentOS 5 Networking :: Can't Access Any Port From The Internet

Nov 28, 2010

1. I've just installed Centos 5.5 on a dell machine with 2 network interfaces, and have disabled SELinux.

The output for the command sestatus is: SELinux status: disabled

2. Am I right to think that iptables is not a concern since SELinux is disabled? In any case, the output for the command "iptables -L" is:

Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT udp -- anywhere anywhere udp dpt:domain
ACCEPT tcp -- anywhere anywhere tcp dpt:domain

[Code]....

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Ubuntu Networking :: (11.04) Ethernet Connected But Unable To Access The Internet

Jun 5, 2011

I am using ubuntu (11.04) here, when i connect Bsnl broadband link(wired connection). Internet is connect automatically But unable to instal, upgrad and access Internet pages ..

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CentOS 5 Networking :: DomU Virbr0 Can't Access Internet?

Feb 1, 2009

I'm running a CentOS 5.2 on dom0 and two CentOS 5.2 on domU.The domU use virbr0.I install domU via GUI interface and did not change anything ... the domUcan ping and connect to dom0 but can't access to Internet !!I search google and find someone mentioned that I need to enable IP forwardin dom0 ... I did but my domU still can't access to Internet.What else I need to do ?The routing table of dom0 is:

# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface

[code]....

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Ubuntu Networking :: Connected To Network Via Live Cd (10.10) - Unable To Access Internet

Apr 26, 2011

can't access internet. The up and down icon appears by the network connection (upper right hand corner). When I review connection properties, I see that the computer has a valid address, subnet, gatway, dns, etc... But it still can't connect to the internet. I can't ping external addresses either. But I can access internal addresses (local router).

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CentOS 5 Networking :: Wifi Client To Access Internet Via Laptop?

Jul 27, 2010

I have a Centos5.4 64bit laptop, having an eth0 and a wlan0. I connect this wired eth0 to a wall socket to access Internet via DHCP (eg the assigned address is like 192.168.192.xx). I do not have access to the ADSL router. How can I turn this laptop into a Wifi access point to allow, say my Ipad or any wireless-only client, to access the Internet thru this laptop ?

That is, communication between iPad to laptop is wifi(ad-hoc connection ??), laptop to the ADSL router is wired LAN. The laptop need to have some bridging build in ? If you can refer me some concepts, then I can follow up from there.

Or better yet, has anybody does this before ?

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CentOS 5 :: Unable To Gain Access To Server Locally?

Jun 30, 2009

We have a server were we no longer seem to be able to gain access, neither locally or remotely.When we try to connect via SSH we get a "Connection Refused". We have checked that it's not our standard firewall blocking the request, so it can either be the local firewall (which we disabled when installing) or that the process isn't running.However, when we try to login locally on the machine (as root) all we get is "Login failed". We've tried restarting the machine in single user mode to change the root password, and while we can do this succesfully, it still doesn't give us access when rebooting the machine afterwards.No other users (besides the standard users created when installing) are available on the server, so we can't say if this is a problem with the root account, or with logging on in general.

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CentOS 5 Server :: Unable To Access Resume Device?

Sep 23, 2011

I face a problem with my server after i rebooted it i got a message on start up tell me that " Unable to access resume device (label=swap-sdb3) " and the system doesn't startup

the error message exactly is

Unable to access resume device (lable=swap-sdb3)
Creating root device.
Mounting root filesystem.
[ 3.305354] EXT-fs (md1) : error : unable to read superplock
mount: error mounting /dev/root on sysroot as ext3 : invalid argument

[Code]....

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CentOS 5 Networking :: Unable To Access Company Vpn?

Mar 8, 2011

I am trying to access my company VPN using my Centos 5.5 laptop. I have the vpn client certificate issued by my company's IT dept. I am able to access the webmail using the same certificate which I installed in firefox. But I would like to know how to use this certificate to sign in to the VPN. Some of my colleagues use the Cisco VPN client v5.0.? software and the vpn client certificate to login. It works fine. But I would like to do the same with Centos.I tried connecting using vpnc. I converted the pcf file to conf using pcf2conf. Converted the certificate to .pem file. I replaced the /etc/vpnc/default.conf file with the pcf2conf converted file. Following is the converted conf file:

IPSec gateway example-vpn.companyname.com
IPSec ID <groupid>
IPSec secret <groupsecret>

[code]....

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General :: PPPOE Server Access Internet Clients Fail To Access Internet

Aug 26, 2010

I have a linux box (fedora) with two ethernet cards eth1 and eth2. On eth1 I successfully configured a PPPOE internet connection. Such that from the server I can browse the internet. On eth2 I wired it to a wireless router essentially to provide the wireless cloud. On eth2 I also configured dhcp, such that the Linux box is both PPPOE and DHCP server.However my clients on the LAN cannot access the Internet.

On passing the routing command I get
Destination Gateway Iface
196.44.x.y 0.0.0.0 ppp0
192.168.1.0 0.0.0.0 eth2 (my subnet)
0.0.0.0 0.0.0.0 ppp0.

The router (functioning as a wireless access point mainly) has a fixed IP address of 192.168.1.2 and eth2 has IP address 192.168.1.1. The dhcp file running on Linux has been set with option router (Gateway) 192.168.1.1. I cannot figure out how to correctly set the routing table such that my clients on wireless can access the internet cloud. I googled and googled but no solid solution. Any suggestions?

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Ubuntu Networking :: Install NIC Wired RC-400 - Error Comes Out - Unable To Access The Internet Or Ping Any IP Address?

May 5, 2010

we are trying to install this NIC Rosewill RC-400 Chipset RTL8169S-32 in Ubuntu 9.04 we downloaded the drivers from Rosewill website (For kernel 2.4.x and 2.6.x V 3.1) but when we follow the instruction in the readme file and do make clean modules and error comes out

Code:
make -C src/ clean
make[1]: Entering directory `/home/trinity/Desktop/r8169-6.006.00/src'
rm -rf *.o *.ko *~ core* .dep* .*.d .*.cmd *.mod.c *.a *.s .*.flags .tmp_versions Module.symvers Modules.symvers rset[code]...

So I went do realteak downloaded latest available drivers that seems to be were release yesterday did same command and same error So I made only make and it went fine did then make clean modules and went fine so made make install, depmod -a and modprobe r8169 verify int was up and getting correct ip from router but I'm not able to access the internet or ping any IP address

Code:
xxx@xxx-desktop:~$ uname -a
Linux xxx-desktop 2.6.28-18-generic #60-Ubuntu SMP Fri Mar 12 04:40:52 UTC 2010 i686 GNU/Linux
xxx@xxx-desktop:~$

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Server :: Unable To Access Samba Share On CentOS 5.4 From Windows XP Or Vista

Jan 23, 2010

I can't be the first one with this problem. What am I missing?

I have setup Samba servers in the past, just none under SELinux. The last one I configured was a couple years ago, so I wouldn't doubt I'm a bit rusty.


---- Environment summary:
Clean server install of CentOS 5.4 includes SELinux
- lets call this 'server'
- updated samba to 3.0.33-3.15.el5_4.1

Client1 - Windows XP sp4 - WINS configuration uses 'server' noted above
Client2 - Windows Vista - WINS configuration uses 'server' noted above

---- What works / what doesn't ------
Clients can see the server (XP and vista) in network neighborhood.
The following does not work from windows (xp or vista)
net view
net view \server
net view \server-ip
net view \servershare

This does work on the server
smbclient -L \server
smbclient -L \server --user validuser
smbclient -L \client1 --user validuser


---- What I have configured and tried (config/output below) --------
firewall ports for samba are open
SELinux enforcing or permissive
file context is set on share
samba booleans are set

***firewall
-A RH-Firewall-1-INPUT -s 192.168.0.0/24 -m state --state NEW -m tcp -p tcp --dport 445 -j ACCEPT
-A RH-Firewall-1-INPUT -s 192.168.0.0/24 -m state --state NEW -m udp -p udp --dport 137 -j ACCEPT
-A RH-Firewall-1-INPUT -s 192.168.0.0/24 -m state --state NEW -m udp -p udp --dport 138 -j ACCEPT
-A RH-Firewall-1-INPUT -s 192.168.0.0/24 -m state --state NEW -m tcp -p udp --dport 139 -j ACCEPT

***SELinux mode/booleans
# sestatus
SELinux status: enabled
SELinuxfs mount: /selinux
Current mode: permissive
Mode from config file: enforcing
Policy version: 21
Policy from config file: targeted

# getsebool -a | grep smb
allow_smbd_anon_write --> off
smbd_disable_trans --> on

# getsebool -a | grep samba
samba_domain_controller --> on
samba_enable_home_dirs --> on
samba_export_all_ro --> off
samba_export_all_rw --> off
samba_share_fusefs --> off
samba_share_nfs --> off
use_samba_home_dirs --> on
virt_use_samba --> off

***filesystem
# semanage fcontext -a -t samba_share_t �/share/photos(/.*)?�
# restorecon -R -v /share/photos

***Disks
]# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda3 9920624 2070872 7337684 23% /
/dev/sda1 101086 19146 76721 20% /boot
tmpfs 1846656 0 1846656 0% /dev/shm
/dev/mapper/VolGroup00-xen
100791728 202540 95469188 1% /xen
/dev/mapper/VolGroup00-photo00
251981556 191716 238989840 1% /share/photos
/dev/mapper/VolGroup00-dmsdoc00
100791728 192256 95479472 1% /share/alfresco
none 1846656 104 1846552 1% /var/lib/xenstored



***smb.conf
[global]
workgroup = workgroup
netbios name = server
security = user
name resolve order = wins hosts lmhosts bcast
encrypt passwords = yes
hosts allow = 192.168.0.
hosts deny = 192.168.122.
interfaces = eth0
passdb backend = tdbsam
oslevel = 222
local master = yes
domain master = yes
preferred master = yes
cups options = raw
username map = /etc/samba/smbusers
wins support = yes
log level = 4
guest ok = yes

[photo]
comment = Photos
path = /share/photos
read only = yes
guest ok = yes

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Ubuntu Networking :: Get Internet Access To Server?

Jun 19, 2011

I have a server that was set up by a friend so I have a location to save all my documents for work in a RAID array.

It is on a static IP address, I can ping the hub and other computers on the network absolutely fine.

I can't connect to the internet, the router in question is a Netgear CG3101D. Logging into the router I can see that the server is a trusted device and in all the parameters are the same as other computer running Ubuntu Studio.

Does anyone have any tips of how I can find out how to find what is wrong?

It is Ubuntu 10.04.2 LTS (Lucid).

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Networking :: Access Server And Internet Through WiFi

Jan 15, 2011

I have install centos 5 in my dell laptop, now i want to configure and run wifi to access internet through wireless.

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Networking :: Ubuntu Server Can't Access Internet ?

Jan 2, 2011

I'm setting up an old box as a dedicated file-sharing server on the LAN as well as an internet web server for my personal web site but I have no network connection. My computer is connected to a router which is connected to my DSL modem. The router has the Ubuntu box's MAC address as well as a Win7 box, which connects to the internet fine.

Here is what I've tried:

1. Check routing table

Code:

2. Try to add a default gateway to the internet on eth2, this happens:

Code:

3. I edited resolv.conf, which was empty, adding:

4. I edited /etc/network/interfaces as follows:

Code:

Then I type the following:

Code:

And it keeps doing this endlessly because it's not finding the DHCP server, presumably...? This didn't solve the problem and so I attempted another configuration:

Code:

Still, not internet connection and no ability to apt-get anything (says packages not found)

So, this didn't work either. What I've tried should work, especially the route command. Now why won't it work?

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Networking :: CentOS 5.5 Box Unable To Access Live Web Service On Interwebs

Oct 27, 2010

From my office and home, I can access a web service, no problem. However, from my server at the data center, I cannot. Could this be a DNS issue? I've tried with iptables enabled and disabled. selinux is disabled. This server has multiple network interfaces, one public and two private. The public has a WAN IP address (1.1.1.1), the private is 10.1.10.2 and the other private is connected via crossover cable to another server 192.168.100.1. I think route -n tells me the WAN interface is used to access the internet, as its gateway is my ISP's upstream gateway. CentOS 5.5.

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Ubuntu Networking :: VPN Server Does Not Allow Clients To Access Internet?

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

[Code]....

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