11-13-2002
Are you using ipchains or iptables?
You may have blocked it out accidentally with a local packet filter (firewall)...
Also, your network admin may have set a rule to allow ICMP (pings) only one way...
10 More Discussions You Might Find Interesting
1. AIX
Hey all. I have a long list of IP addresses I want to ping. The IP's are located in a flat file "ping_info.dat".
I was wondering what the best way to go about this would be. Can someone help me out? (2 Replies)
Discussion started by: jalge2
2 Replies
2. Shell Programming and Scripting
Hi,
How to ping an ip from an unix machine. Can you please let me know the exact command. I used and i got the below error
ping 171.18.17.2
bash: ping: command not found
Thanks n regards
Ammu (1 Reply)
Discussion started by: ammu
1 Replies
3. Shell Programming and Scripting
Keep in mind that I haven't done Perl scripting for a LONG time, so I'm quite rusty.
This is what I would like to do:
- using fork, create 3 or 4 processes to read 3 or 4 different text documents containing server names or IP addresses
- in each of those processes, Perl will ping each of those... (7 Replies)
Discussion started by: kooshi
7 Replies
4. Solaris
Dear all,
I face some problem as below.
I have a sun fire 280r server in a network. From that server i am able to ping any system in any network. But i am facing the problem when i try to ping the server from outside netwok. Once i give ping command in the server then only i try to... (1 Reply)
Discussion started by: sudhansu
1 Replies
5. UNIX for Dummies Questions & Answers
Hi,
I don't have a lot of info, so I'm sure this is a long shot. But figured I'd check to see if this issue rings a bell with anyone.
Two weeks ago a Unix server stopped updating the date. So everyday it shows the same system time. It's been manually changed to the correct date, but then... (2 Replies)
Discussion started by: no_clue
2 Replies
6. Shell Programming and Scripting
how can you ping a domain and store the ip?
like given a url in a variable $url
how can i ping it?
also how can i find the local server's ip address on a cpanel server?
(i have multiple servers and didnt want to hard code it in)
(basically i want to check the domain accounts on the server,... (11 Replies)
Discussion started by: vanessafan99
11 Replies
7. IP Networking
Hi,
I have a rather strange IP question...
Here's my problem:
I have a Linux box (call it "turing") with 2 NICs.
One network interface (eth0) has an IP assigned, say 192.168.42.50.
The other interface (eth1) is up, but has no IP yet.
My question: is it possible to determine from... (3 Replies)
Discussion started by: NH2
3 Replies
8. UNIX Desktop Questions & Answers
I need to ping websites and I need to see which one has the highest delay.
My problem is I need to extract the name Facebook and the time=74.0 ms using awk. I need help doing this please...
PING facebook.com (173.252.90.36) 56(84) bytes of data.
64 bytes from... (5 Replies)
Discussion started by: 5sku5
5 Replies
9. Emergency UNIX and Linux Support
Hi,
I need to set up a script that would write the results of the ping command from one AIX server to another file may be every minute. Like this I need to gather the data for a period of 24 hours.
Can someone please help me with this?
G (5 Replies)
Discussion started by: ggayathri
5 Replies
10. HP-UX
Hi,
A database (Oracle) replication process was executed by the DBA team in one server (serverX). However, this replication process gets terminated, and there are no errors in the replication log. But there is error in the OS log files (syslog.log) :
Aug 8 16:51:47 L28dre02 sshd: subsystem... (1 Reply)
Discussion started by: anaigini45
1 Replies
LEARN ABOUT DEBIAN
pyroman
PYROMAN(8) System Manager's Manual PYROMAN(8)
NAME
pyroman - a firewall configuration utility
SYNOPSIS
pyroman
[ -hvnspP ] [ -r RULESDIR ] [ -t SECONDS ]
[ --help ] [ --version ] [ --safe ] [ --no-act ]
[ --print ] [ --print-verbose ] [ --rules=RULESDIR ]
[ --timeout=SECONDS ] [ safe ]
DESCRIPTION
pyroman is a firewall configuration utility.
It will compile a set of configuration files to iptables statements to setup IP packet filtering for you.
While it is not necessary for operating and using Pyroman, you should have understood how IP, TCP, UDP, ICMP and the other commonly used
Internet protocols work and interact. You should also have understood the basics of iptables in order to make use of the full
functionality.
pyroman does not try to hide all the iptables complexity from you, but tries to provide you with a convenient way of managing a complex
networks firewall. For this it offers a compact syntax to add new firewall rules, while still exposing access to add arbitrary iptables
rules.
OPTIONS
-r RULESDIR,--rules=RULES
Load the rules from directory RULESDIR instead of the default directory (usually /etc/pyroman )
-t SECONDS,--timeout=SECONDS
Wait SECONDS seconds after applying the changes for the user to type OK to confirm he can still access the firewall. This implies
--safe but allows you to use a different timeout.
-h, --help
Print a summary of the command line options and exit.
-V, --version
Print the version number of pyroman and exit.
-s, --safe, safe
When the firewall was committed, wait 30 seconds for the user to type OK to confirm, that he can still access the firewall (i.e. the
network connection wasn't blocked by the firewall). Otherwise, the firewall changes will be undone, and the firewall will be
restored to the previous state. Use the --timeout=SECONDS option to change the timeout.
-n, --no-act
Don't actually run iptables. This can be used to check if pyroman accepts the configuration files.
-p, --print
Instead of running iptables, output the generated rules.
-P, --print-verbose
Instead of running iptables, output the generated rules. Each statement will have one comment line explaining how this rules was
generated. This will usually include the filename and line number, and is useful for debugging.
CONFIGURATION
Configuration of pyroman consists of a number of files in the directory /etc/pyroman. These files are in python syntax, although you do
not need to be a python programmer to use these rules. There is only a small number of statements you need to know:
add_host
Define a new host or network
add_interface
Define a new interface (group)
add_service
Add a new service alias (note that you can always use e.g. www/tcp to reference the www tcp service as defined in /etc/services)
add_nat
Define a new NAT (Network Address Translation) rule
allow Allow a service, client, server combination
reject Reject access for this service, client, server combination
drop Drop packets for this service, client, server combination
add_rule
Add a rule for this service, client, server and target combination
iptables
Add an arbitrary iptables statement to be executed at beginning
iptables_end
Add an arbitrary iptables statement to be executed at the end
Detailed parameters for these functions can be looked up by caling
cd /usr/share/pyroman
pydoc ./commands.py
BUGS
None known as of pyroman-0.4 release
AUTHOR
pyroman was written by Erich Schubert <erich@debian.org>
SEE ALSO
iptables(8), iptables-restore(8) iptables-load(8)
PYROMAN(8)