Units in all computer network recently on the network is always starts, ping sites, site IP and DNS are normal connection, unit outside the firewall mobile and unicom network, using the single line in the above situation, judgment problem, not the network interface on the firewall pulled the plug in again, immediately outside the network is normal, QQ, after watching video connection, web page can't open, still can normal play QQ and video,

CodePudding user response:

I search on baidu similar problems, find two similar, but there is no solution, seriously affect the unit office now, urgent urgent!!!!!!

CodePudding user response:

DNS problem with 360 first-aid kit can be solved without Internet

CodePudding user response:

Double line redundancy or load? The DNS used? Firewall load high

CodePudding user response:

Your description is not detailed, may network loop? Or is there arp deception

CodePudding user response:

Always can't find the reason, group day unit power, after the call, network has been normal,

CodePudding user response:

A good DNS configuration

CodePudding user response:

Direct phone network operator, we had this problem, is the operator, on the other side of the problem,

CodePudding user response:

DNS problem or broadband resources is bad, like mobile, broadband, such as the Great Wall,

CodePudding user response:

ha ha, estimation is your network devices for a long time didn't ring off the strike

CodePudding user response:

In my case, as well as the building Lord ping IP and DNS is normal, the pin site dozens of seconds to break apart, called the net line to also won't solve, I ran to see your message after pulled forward, is restored

CodePudding user response:

references 9 f zsj669149 response:

ha ha, estimation is your network devices for a long time not yet closed strike

In my case, as well as the building Lord ping IP and DNS is normal, the pin site dozens of seconds to break apart, called the net line to also won't solve, I ran to see your message after pulled forward, is restored

CodePudding user response:

Try to restart the firewall

CodePudding user response:

Look at the CPU utilization of the firewall memory usage, and switches, etc., may be a long time didn't restart, hanged or abnormal equipment process frequently causes high occupancy resources

CodePudding user response:

Generally appear these strange phenomenon, restart routing or exchange equipment can be solved, don't ask why? Because you don't restart the device will never find out what problem, and the longer time, the more problems,

CodePudding user response:

Likely deployed within the local area network monitoring software, such as the well-known: ANYVIEW (p) network, amoisoft.com can understand,

If there are staff deployed Intranet, can monitor the network computer Internet content, and can control the Internet behavior, of course also can prohibit others to get to the Internet to browse the web, such as,,

If also deployed network monitoring, can also monitor screen, QQ chat content monitoring, WeChat chat content monitoring, and even some copy others computer directly to the file,

CodePudding user response:

Ping what parameters of normal set package bigger ping ping tong, replace?

CodePudding user response:

Like this kind of strange phenomenon core router or switch

CodePudding user response:

May be a firewall throughput is not enough

CodePudding user response:

Can try the function of firewall is shut see such as: url filtering, ips, av the utm turn off

CodePudding user response:

This is certainly a network has caused by ARP cheat software to take over the gateway