0
votes
1answer
29 views

How to set up routing tables in EC2, so that ping works

I have a wide open security group which I rely on for instances to be able to connect. I also have a private network of 172.*. addresses, as shown here: What do I need to do in order to allow ...
-1
votes
1answer
157 views

How to find out why website is not accessible? [closed]

I cannot access a certain website. There are two possible reasons: The block is on the ISP side. The block is at the website. Is there a technical way to figure out which of these are causing the ...
0
votes
1answer
296 views

iptables blocking ability to ping/reach domain names

I'm trying to set up some firewall rules for allowing SSH, incoming ping, munin, and MySQL between one server and another (all those services are working fine with my rules), but when I apply the ...
0
votes
1answer
112 views

Linux server cannot be pinged

I have set up a Linux server in DMZ. There is another Windows server running in same DMZ. These two servers can be pinged via internet using my home PC. However, the another Linux server rented from a ...
0
votes
0answers
35 views

Loading wordpress admin page prevents and blocks further requests

I've installed a Wordpress site on a host (actually I moved it from localhost). The site loads and works perfectly, however if I log in with Admin, the admin page doesn't completely load and all ...
1
vote
3answers
1k views

Sonicwall NSA2400 - No internet access

We've got a SonicWall NSA2400 configured with a LAN (X0) and a WAN(X1) interface. It was setup and working fine until just recently when a temporary worker changed some settings most likely NAT. We ...
0
votes
1answer
441 views

Pros vs Cons of Rate Limiting ICMP [duplicate]

I am configuring Config Server Firewall and here is the default config for ICMP. I have read on the internet that disabling or limiting ICMP can cause huge headaches on your server. However I have ...
2
votes
1answer
915 views

Can't ping from my Amazon EC2 instance running Windows Server 2008 R2

I have been searching for a while, but it seems like most people have same issue but in the other direction. Meaning that the can't seem to ping their Server. I am trying to use putty to access my ...
3
votes
9answers
4k views

Why am I Unable to ping port 443 on Ubuntu?

I have opened port 443 through iptables: pkts bytes target prot opt in out source destination 45 2428 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0 6 1009 ACCEPT tcp -- * * 0.0.0.0/0 ...
0
votes
2answers
2k views

ping fails but ssh succeeds

I'm facing a situation where one app(using ssh) can connect from Machine A (Linux) to Machine B (windows), whereas Machine A cannot ping Machine B. Another app on Machine A which connects to Machine B ...
1
vote
2answers
756 views

What does this output from HPing mean?

hping command: hping3 -G --rroute $domain -i u1000 Result: len=80 ip=127.0.0.1 ttl=64 DF id=0 sport=0 flags=RA seq=176 win=0 rtt=0.2 ms (same route) len=80 ip=127.0.0.1 ttl=64 DF id=0 sport=0 ...
1
vote
2answers
5k views

Configuring TMG to allow a connection through the firewall

Here's the basic outline of the problem: I'm trying to ping from 192.168.0.2 to 192.168.10.2, but the ping dies on reaching 192.168.10.1. Obviously TMG is blocking it with the firewall. :) ...
3
votes
2answers
4k views

Why can't I ssh or ping my brand new Amazon EC2 instance?

I just created a free EC2 instance with all the defaults. It says it's running in the AWS Management Console. On the "Instance Actions" menu, I click "Connect". I copy the DNS name provided (looks ...
0
votes
1answer
142 views

Windows Server 2008 ignores any change made to firewall

I have been trying for the last 2 hours to make my Windows Server 2008 answer ping. I have tried almost every single solution I have found on the web, so far nothing work. My current setup: 2 NIC ...
0
votes
2answers
4k views

Iptables: how to drop incoming pings from host but allow ping responses?

I am practicing with iptables and... I need a rule that will block a certain host from pinging me but will let me to ping the host if needed (so I need to accept ping responses right?). Can you help ...
0
votes
1answer
103 views

LCMS machines are pinging random computers on company intranet

we have some LCMS AGILENT machines set up in our lab. for some reason they are pinging random computers in our company. every now and then someone on our network will get a windows firewall ...
0
votes
1answer
324 views

Domain Controller can't receive inbound pings / Firewall can't be enabled

I can ping everything from the domain server but it doesn't show up on any ping sweeps from client machines. Also, the firewall service is off but can't be turned on. It says that there is another ...
0
votes
2answers
2k views

Ping responses don't make it back to mailserver behind watchguard firewall

Current suspect is the Watchguard Firewall. Most likely I am to blame as the person who edited the firewall rules. At a recent point in the past my company was on a different external IP address. I ...
0
votes
2answers
864 views

Have internet but cannot ping ip address

I'm running 2003 Server and have workstations set up to connect to a terminal services session in order to use software stored on the server. we use a program that connects an external entity with us ...
1
vote
2answers
1k views

Juniper firewall - large pings for testing

Is there an way to permit ping packets larger than 1472 through a Juniper SSG520M firewall? "Ping of Death" and "Large Size ICMP Packet" protection has already been disabled under the 'Screening' ...
16
votes
6answers
22k views

Enable Ping in Windows Server Firewall?

I've just installed Windows Server 2008 on a server and I'm able to connect through Remote Desktop but can't ping. Do I need to open an special port on the firewall to be able to ping a server?