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*RESOLVED* APF firewall problem! [message #13843] Wed, 06 June 2007 15:12 Go to next message
omega36 is currently offline  omega36
Messages: 9
Registered: June 2007
Junior Member
Hello.

I am running two VPS's. They are both from the same VPS provider.
They are both the same OS with the same kernel.

I have rebuilt both from scratch and then run yum update on both.
I installed apf firewall on VPS A and VPS B after modifying
conf.apf with the following changes on both VPS's:

changed interfaces to 'venet0', opened necessary ingress ports
(outgoing filtering is set to 0), and then set monokern to 1

When I run apf on VPS A, it starts fine with no errors, when I
run the same on VPS B, it starts, but I get a bunch of errors.
Here is the total output of the startup sequence on the VPS
with errors:


[root@vpsB ~]# apf -s
apf(29931): {glob} activating firewall
apf(29988): {glob} determined (IFACE_IN) venet0 has address 127.0.0.1
apf(29988): {glob} determined (IFACE_OUT) venet0 has address 127.0.0.1
apf(29988): {glob} loading preroute.rules
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
apf(29988): {resnet} downloading http://r-fx.ca/downloads/reserved.networks
apf(29988): {resnet} parsing reserved.networks into /etc/apf/internals/reserved.networks
apf(29988): {glob} loading reserved.networks
apf(29988): {glob} loading bt.rules
apf(29988): {dshield} downloading http://feeds.dshield.org/top10-2.txt
apf(29988): {dshield} parsing top10-2.txt into /etc/apf/ds_hosts.rules
apf(29988): {dshield} loading ds_hosts.rules
apf(29988): {sdrop} downloading http://www.spamhaus.org/drop/drop.lasso
apf(29988): {sdrop} parsing drop.lasso into /etc/apf/sdrop_hosts.rules
apf(29988): {sdrop} loading sdrop_hosts.rules
apf(29988): {glob} loading common drop ports
apf(29988): {blk_ports} deny all to/from tcp port 135:139
apf(29988): {blk_ports} deny all to/from udp port 135:139
apf(29988): {blk_ports} deny all to/from tcp port 111
apf(29988): {blk_ports} deny all to/from udp port 111
apf(29988): {blk_ports} deny all to/from tcp port 513
apf(29988): {blk_ports} deny all to/from udp port 513
apf(29988): {blk_ports} deny all to/from tcp port 520
apf(29988): {blk_ports} deny all to/from udp port 520
apf(29988): {blk_ports} deny all to/from tcp port 445
apf(29988): {blk_ports} deny all to/from udp port 445
apf(29988): {blk_ports} deny all to/from tcp port 1433
apf(29988): {blk_ports} deny all to/from udp port 1433
apf(29988): {blk_ports} deny all to/from tcp port 1434
apf(29988): {blk_ports} deny all to/from udp port 1434
apf(29988): {blk_ports} deny all to/from tcp port 1234
apf(29988): {blk_ports} deny all to/from udp port 1234
apf(29988): {blk_ports} deny all to/from tcp port 1524
apf(29988): {blk_ports} deny all to/from udp port 1524
apf(29988): {blk_ports} deny all to/from tcp port 3127
apf(29988): {blk_ports} deny all to/from udp port 3127
apf(29988): {pkt_sanity} set active PKT_SANITY
apf(29988): {pkt_sanity} deny inbound tcp-flag pairs ALL NONE
apf(29988): {pkt_sanity} deny inbound tcp-flag pairs SYN,FIN SYN,FIN
apf(29988): {pkt_sanity} deny inbound tcp-flag pairs SYN,RST SYN,RST
apf(29988): {pkt_sanity} deny inbound tcp-flag pairs FIN,RST FIN,RST
apf(29988): {pkt_sanity} deny inbound tcp-flag pairs ACK,FIN FIN
apf(29988): {pkt_sanity} deny inbound tcp-flag pairs ACK,URG URG
apf(29988): {pkt_sanity} deny inbound tcp-flag pairs ACK,PSH PSH
apf(29988): {pkt_sanity} deny inbound tcp-flag pairs ALL FIN,URG,PSH
apf(29988): {pkt_sanity} deny inbound tcp-flag pairs ALL SYN,RST,ACK,FIN,URG
apf(29988): {pkt_sanity} deny inbound tcp-flag pairs ALL ALL
apf(29988): {pkt_sanity} deny inbound tcp-flag pairs ALL FIN
apf(29988): {pkt_sanity} deny outbound tcp-flag pairs ALL NONE
apf(29988): {pkt_sanity} deny outbound tcp-flag pairs SYN,FIN SYN,FIN
apf(29988): {pkt_sanity} deny outbound tcp-flag pairs SYN,RST SYN,RST
apf(29988): {pkt_sanity} deny outbound tcp-flag pairs FIN,RST FIN,RST
apf(29988): {pkt_sanity} deny outbound tcp-flag pairs ACK,FIN FIN
apf(29988): {pkt_sanity} deny outbound tcp-flag pairs ACK,PSH PSH
apf(29988): {pkt_sanity} deny outbound tcp-flag pairs ACK,URG URG
apf(29988): {pkt_sanity} deny all to/from 255.255.255.255
apf(29988): {pkt_sanity} deny all to/from 0.0.0.255/0.0.0.255
apf(29988): {pkt_sanity} deny all fragmented udp
apf(29988): {pkt_sanity} deny inbound tcp port 0
apf(29988): {pkt_sanity} deny outbound tcp port 0
apf(29988): {blk_p2p} set active BLK_P2P
apf(29988): {blk_p2p} deny all to/from tcp port 1214
apf(29988): {blk_p2p} deny all to/from udp port 1214
apf(29988): {blk_p2p} deny all to/from tcp port 2323
apf(29988): {blk_p2p} deny all to/from udp port 2323
apf(29988): {blk_p2p} deny all to/from tcp port 4660:4678
apf(29988): {blk_p2p} deny all to/from udp port 4660:4678
apf(29988): {blk_p2p} deny all to/from tcp port 6257
apf(29988): {blk_p2p} deny all to/from udp port 6257
apf(29988): {blk_p2p} deny all to/from tcp port 6699
apf(29988): {blk_p2p} deny all to/from udp port 6699
apf(29988): {blk_p2p} deny all to/from tcp port 6346
apf(29988): {blk_p2p} deny all to/from udp port 6346
apf(29988): {blk_p2p} deny all to/from tcp port 6347
apf(29988): {blk_p2p} deny all to/from udp port 6347
apf(29988): {blk_p2p} deny all to/from tcp port 6881:6889
apf(29988): {blk_p2p} deny all to/from udp port 6881:6889
apf(29988): {blk_p2p} deny all to/from tcp port 6346
apf(29988): {blk_p2p} deny all to/from udp port 6346
apf(29988): {glob} loading log.rules
apf(29988): {glob} virtual network enabled, loading vnet rules.
apf(29988): {glob} loading 206.71.150.203.rules
apf(29988): {glob} opening inbound tcp port 20 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 21 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 22 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 25 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 80 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 110 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 143 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 443 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 3306 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 7776 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 7777 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 7778 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 7779 on 206.71.150.203
apf(29988): {glob} opening inbound tcp port 8089 on 206.71.150.203
apf(29988): {glob} opening inbound udp port 20 on 206.71.150.203
apf(29988): {glob} opening inbound udp port 21 on 206.71.150.203
apf(29988): {glob} opening inbound udp port 53 on 206.71.150.203
apf(29988): {glob} opening inbound icmp type 3 on 206.71.150.203
apf(29988): {glob} opening inbound icmp type 5 on 206.71.150.203
apf(29988): {glob} opening inbound icmp type 11 on 206.71.150.203
apf(29988): {glob} opening inbound icmp type 0 on 206.71.150.203
apf(29988): {glob} opening inbound icmp type 30 on 206.71.150.203
apf(29988): {glob} opening inbound icmp type 8 on 206.71.150.203
apf(29988): {glob} loading main.rules
apf(29988): {glob} opening inbound tcp port 20 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 21 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 22 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 25 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 80 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 110 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 143 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 443 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 3306 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 7776 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 7777 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 7778 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 7779 on 127.0.0.1
apf(29988): {glob} opening inbound tcp port 8089 on 127.0.0.1
apf(29988): {glob} opening inbound udp port 20 on 127.0.0.1
apf(29988): {glob} opening inbound udp port 21 on 127.0.0.1
apf(29988): {glob} opening inbound udp port 53 on 127.0.0.1
apf(29988): {glob} opening inbound icmp type 3 on 127.0.0.1
apf(29988): {glob} opening inbound icmp type 5 on 127.0.0.1
apf(29988): {glob} opening inbound icmp type 11 on 127.0.0.1
apf(29988): {glob} opening inbound icmp type 0 on 127.0.0.1
apf(29988): {glob} opening inbound icmp type 30 on 127.0.0.1
apf(29988): {glob} opening inbound icmp type 8 on 127.0.0.1
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
apf(29988): {glob} resolv dns discovery for 206.71.148.231
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
apf(29988): {glob} loading postroute.rules
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
apf(29988): {glob} default (egress) output accept
apf(29988): {glob} default (ingress) input drop
apf(29931): {glob} firewall initalized
apf(29931): {glob} fast load snapshot saved


It seems to run okay, but I am unable to use wget or yum and FTP
does not work correctly on VPS B. On VPS A, everything works fine.

I ha ...

[ Show the rest of the message ]

[Updated on: Thu, 07 June 2007 08:05] by Moderator

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Re: APF firewall problem! [message #13844 is a reply to message #13843] Wed, 06 June 2007 15:15 Go to previous messageGo to next message
ugob is currently offline  ugob
Messages: 271
Registered: March 2007
Senior Member
I had similar problem. You must configure iptables modules in several place. Search this forum for apf and you should find...

Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf

Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page

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Re: APF firewall problem! [message #13847 is a reply to message #13843] Wed, 06 June 2007 15:33 Go to previous messageGo to next message
omega36 is currently offline  omega36
Messages: 9
Registered: June 2007
Junior Member
I have searched and I can't find anything, is there something more specific I should be looking for Sad

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Re: APF firewall problem! [message #13849 is a reply to message #13847] Wed, 06 June 2007 15:38 Go to previous messageGo to next message
ugob is currently offline  ugob
Messages: 271
Registered: March 2007
Senior Member
http://kb.swsoft.com/article_130_875_en.html

Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf

Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page

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Re: APF firewall problem! [message #13851 is a reply to message #13849] Wed, 06 June 2007 15:45 Go to previous messageGo to next message
omega36 is currently offline  omega36
Messages: 9
Registered: June 2007
Junior Member
I have done everything that I can in OpenVZ as a end-user of
a VPS supplier with that guide, but that hasn't helped
me either... any other ideas?

[Updated on: Wed, 06 June 2007 15:47]

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Re: APF firewall problem! [message #13853 is a reply to message #13851] Wed, 06 June 2007 15:51 Go to previous messageGo to next message
ugob is currently offline  ugob
Messages: 271
Registered: March 2007
Senior Member
Ask your supplier if you can use iptables rules in your VE,

Please read the manual before asking questions:
http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf

Please have a look at the wiki before asking questions:
http://wiki.openvz.org/Main_Page

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Re: APF firewall problem! [message #13854 is a reply to message #13843] Wed, 06 June 2007 15:55 Go to previous messageGo to next message
omega36 is currently offline  omega36
Messages: 9
Registered: June 2007
Junior Member
That's my problem. The VPS's are on the same main server from
the same provider, using the same OS with identical kernels,
so surely iptables is supported? This is really confusing me
because I cant for the likes of me see why two basically identical
setups wouldn't run apf the same!!

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Re: APF firewall problem! [message #13872 is a reply to message #13854] Thu, 07 June 2007 06:46 Go to previous messageGo to next message
Vasily Tarasov is currently offline  Vasily Tarasov
Messages: 1345
Registered: January 2006
Senior Member
Hello,

Even in your situation, when "VPS's are on the same main server from the same provider, using the same OS with identical kernels", it can happen, that one VPS is able to apply iptbables rules and the other one is not able to do it. The following two reasons I see:
1. One of VPSs (the one, that can't work with iptables) was started later then iptables kernel modules were loaded by provider on HN. To check it - reboot your VE. If after reboot iptables still doesn't work - see 2nd reason.
2. Your provider have different configuration files for the VPSs in question. In VPS config file provider indicates, which iptables modules are available in this VPS. So, probably the line with iptables is just missed in "not working" VPS config file. In this situation you should contact your provider and ask him to check configuration.

HTH,
Vasily.

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Re: APF firewall problem! [message #13874 is a reply to message #13872] Thu, 07 June 2007 07:00 Go to previous messageGo to next message
omega36 is currently offline  omega36
Messages: 9
Registered: June 2007
Junior Member
Thank you Vasily,

A reboot did not help, so I will contact the VPS provider and
ask him to check iptables part of the config of the VPS in question.

Regards,
Curtis.

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Re: APF firewall problem! [message #13877 is a reply to message #13874] Thu, 07 June 2007 07:24 Go to previous messageGo to next message
rickb is currently offline  rickb
Messages: 368
Registered: October 2006
Senior Member
#cat /proc/net/ip_tables_targets

#cat /proc/net/ip_tables_names

what do they say?

-------------
Common Terms I post with: http://wiki.openvz.org/Category:Definitions

UBC. Learn it, love it, live it: http://wiki.openvz.org/Proc/user_beancounters

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Re: APF firewall problem! [message #13878 is a reply to message #13843] Thu, 07 June 2007 07:32 Go to previous messageGo to next message
omega36 is currently offline  omega36
Messages: 9
Registered: June 2007
Junior Member
[root@x ~]# cat /proc/net/ip_tables_names
mangle
filter
nat

[root@x ~]# cat /proc/net/ip_tables_targets
REDIRECT
LOG
TCPMSS
REJECT
TOS
DNAT
SNAT

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Re: APF firewall problem! [message #13879 is a reply to message #13878] Thu, 07 June 2007 07:35 Go to previous messageGo to next message
rickb is currently offline  rickb
Messages: 368
Registered: October 2006
Senior Member
looks ok. I ran into this problem a few times. what I did to solve it in a few minutes was edit the apf script, and have it echo out the iptables commands as it runs them,. that way, you can see what the command is that is causing the errors:

iptables: No chain/target/match by that name


apf isn't a firewall, but an iptables wrapper script. to know whats going on, you need to edit the apf script to print what its doing.
once you have the specific iptables rule which is failing, the problem should be obvious.

-------------
Common Terms I post with: http://wiki.openvz.org/Category:Definitions

UBC. Learn it, love it, live it: http://wiki.openvz.org/Proc/user_beancounters

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Re: APF firewall problem! [message #13880 is a reply to message #13843] Thu, 07 June 2007 07:38 Go to previous messageGo to next message
omega36 is currently offline  omega36
Messages: 9
Registered: June 2007
Junior Member
How do I go about doing that?

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Re: APF firewall problem! [message #13884 is a reply to message #13843] Thu, 07 June 2007 08:03 Go to previous messageGo to next message
omega36 is currently offline  omega36
Messages: 9
Registered: June 2007
Junior Member
Nevermind... it has started working with no errors now.
Strange, I have not changed anything since it last didn't
work Confused

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Re: APF firewall problem! [message #13885 is a reply to message #13884] Thu, 07 June 2007 08:04 Go to previous messageGo to next message
rickb is currently offline  rickb
Messages: 368
Registered: October 2006
Senior Member
Apparently, my mere presence was sufficient to solve the problem.

-------------
Common Terms I post with: http://wiki.openvz.org/Category:Definitions

UBC. Learn it, love it, live it: http://wiki.openvz.org/Proc/user_beancounters

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icon14.gif  Re: *RESOLVED* APF firewall problem! [message #13888 is a reply to message #13843] Thu, 07 June 2007 08:13 Go to previous message
omega36 is currently offline  omega36
Messages: 9
Registered: June 2007
Junior Member
Haha, indeed it was Smile

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