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Top Forums Shell Programming and Scripting RSH connection problem while running MPI program Post 302548903 by vishwamitra on Friday 19th of August 2011 04:31:28 PM
Old 08-19-2011
Code:
telnet localhost 544
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     udp  --  anywhere             anywhere            udp dpt:domain 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:domain 
ACCEPT     udp  --  anywhere             anywhere            udp dpt:bootps 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:bootps 
RH-Firewall-1-INPUT  all  --  anywhere             anywhere            

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             192.168.122.0/24    state RELATED,ESTABLISHED 
ACCEPT     all  --  192.168.122.0/24     anywhere            
ACCEPT     all  --  anywhere             anywhere            
REJECT     all  --  anywhere             anywhere            reject-with icmp-port-unreachable 
REJECT     all  --  anywhere             anywhere            reject-with icmp-port-unreachable 
RH-Firewall-1-INPUT  all  --  anywhere             anywhere            

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         

Chain RH-Firewall-1-INPUT (2 references)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     icmp --  anywhere             anywhere            icmp any 
ACCEPT     esp  --  anywhere             anywhere            
ACCEPT     ah   --  anywhere             anywhere            
ACCEPT     udp  --  anywhere             224.0.0.251         udp dpt:mdns 
ACCEPT     udp  --  anywhere             anywhere            udp dpt:ipp 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ipp 
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED 
ACCEPT     tcp  --  anywhere             anywhere            state NEW tcp dpt:ssh 
REJECT     all  --  anywhere             anywhere            reject-with icmp-host-prohibited

 

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SHOREWALL-EXCLUSION(5)						  [FIXME: manual]					    SHOREWALL-EXCLUSION(5)

NAME
exclusion - Exclude a set of hosts from a definition in a shorewall configuration file. SYNOPSIS
!address-or-range[,address-or-range]... !zone-name[,zone-name]... DESCRIPTION
The first form of exclusion is used when you wish to exclude one or more addresses from a definition. An exclaimation point is followed by a comma-separated list of addresses. The addresses may be single host addresses (e.g., 192.168.1.4) or they may be network addresses in CIDR format (e.g., 192.168.1.0/24). If your kernel and iptables include iprange support, you may also specify ranges of ip addresses of the form lowaddress-highaddress No embedded whitespace is allowed. Exclusion can appear after a list of addresses and/or address ranges. In that case, the final list of address is formed by taking the first list and then removing the addresses defined in the exclusion. Beginning in Shorewall 4.4.13, the second form of exclusion is allowed after all and any in the SOURCE and DEST columns of /etc/shorewall/rules. It allows you to omit arbitrary zones from the list generated by those key words. Warning If you omit a sub-zone and there is an explicit or explicit CONTINUE policy, a connection to/from that zone can still be matched by the rule generated for a parent zone. For example: /etc/shorewall/zones: #ZONE TYPE z1 ip z2:z1 ip ... /etc/shorewall/policy: #SOURCE DEST POLICY z1 net CONTINUE z2 net REJECT /etc/shorewall/rules: #ACTION SOURCE DEST PROTO DEST # PORT(S) ACCEPT all!z2 net tcp 22 In this case, SSH connections from z2 to net will be accepted by the generated z1 to net ACCEPT rule. In most contexts, ipset names can be used as an address-or-range. Beginning with Shorewall 4.4.14, ipset lists enclosed in +[...] may also be included (see shorewall-ipsets[1] (5)). The semantics of these lists when used in an exclusion are as follows: o !+[set1,set2,...setN] produces a packet match if the packet does not match at least one of the sets. In other words, it is like NOT match set1 OR NOT match set2 ... OR NOT match setN. o +[!set1,!set2,...!setN] produces a packet match if the packet does not match any of the sets. In other words, it is like NOT match set1 AND NOT match set2 ... AND NOT match setN. EXAMPLES
Example 1 - All IPv4 addresses except 192.168.3.4 !192.168.3.4 Example 2 - All IPv4 addresses except the network 192.168.1.0/24 and the host 10.2.3.4 !192.168.1.0/24,10.1.3.4 Example 3 - All IPv4 addresses except the range 192.168.1.3-192.168.1.12 and the network 10.0.0.0/8 !192.168.1.3-192.168.1.12,10.0.0.0/8 Example 4 - The network 192.168.1.0/24 except hosts 192.168.1.3 and 192.168.1.9 192.168.1.0/24!192.168.1.3,192.168.1.9 Example 5 - All parent zones except loc any!loc FILES
/etc/shorewall/hosts /etc/shorewall/masq /etc/shorewall/rules /etc/shorewall/tcrules SEE ALSO
shorewall(8), shorewall-accounting(5), shorewall-actions(5), shorewall-blacklist(5), shorewall-hosts(5), shorewall_interfaces(5), shorewall-ipsets(5), shorewall-maclist(5), shorewall-masq(5), shorewall-nat(5), shorewall-netmap(5), shorewall-params(5), shorewall-policy(5), shorewall-providers(5), shorewall-proxyarp(5), shorewall-rtrules(5), shorewall-routestopped(5), shorewall-rules(5), shorewall.conf(5), shorewall-secmarks(5), shorewall-tcclasses(5), shorewall-tcdevices(5), shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5), shorewall-zones(5) NOTES
1. shorewall-ipsets http://www.shorewall.net/manpages/shorewall-ipsets.html [FIXME: source] 06/28/2012 SHOREWALL-EXCLUSION(5)
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