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This article mainly introduces how to solve the problem that ubuntu system is slow to surf the Internet using firefox browser. It is very detailed and has a certain reference value. Interested friends must finish reading it!

Surfing the Internet with browsers such as firefox under ubuntu is often much slower than surfing the Internet under windows, but careful people will find that slow time is spent on DNS search. Then we can cache DNS locally, that is, set up a DNS proxy server locally. The commonly used software are bind, djbdns, dnsmasq and pdnsd. Let's talk about using pdnsd to set up a permanent DNS proxy server, which means that after the system restart, the native cached DNS still exists and there is no need to find the real DNS to re-establish the cache.

1. Installation

Sudo apt-get install pdnsd

When installing, it will ask you what configuration to choose, please select "manual".

2. Configure pdnsd

Sudo gedit / etc/pdnsd.conf

Modify

Server {

Label= "resolvconf"

}

For

Server {

Label= "OpenDNS"

Ip=208.67.222.222

Ip=208.67.220.220

Timeout=30

Interval=30

Uptest=ping

Ping_timeout=50

Purge_cache=off

}

Label= "OpenDNS"

Among them, "OpenDNS" can be written casually, just a logo, for future diagnosis.

Ip=208.67.222.222

Ip=208.67.220.220

These two lines can also be written as one line, ip=208.67.222.222208.67.220.220; represents the real DNS server address, there can be more than one.

The following parameters can be used by default.

Sudo gedit / etc/default/pdnsd

Change the value of START_DAEMON to yes.

3. Add DNS proxy server to resolver

Sudo gedit / etc/resolv.conf

Add a sentence on the first line: nameserver 127.0.0.1

4. Prevent resolv.conf from being overwritten

If you enable the DHCP service, you need to

Sudo gedit / etc/dhcp3/dhclient.conf

Remove

# prepend domain-name-servers 127.0.0.1

The front "#".

If you have dial-up Internet access, then

Sudo gedit / etc/ppp/peers/provider

Add # before usepeerdns, that is, comment out the statement. In case the setting of resolv.conf is overridden by pppoe.

5. Start pdnsd

Sudo / etc/init.d/pdnsd start

6. Testing

Dig www.baidu.com | grep time

The results show that:;; Query time: 1 msec

Original result:;; Query time: 845 msec

The above is all the contents of this article entitled "how to solve the problem of slow access to the Internet using firefox browsers in ubuntu system". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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