IF(A73X) {TRUE;}

IPtables Rules

Saving Rules

Debian Based

netfilter-persistent save

RedHat Based

service iptables save

To Stop / Start / Restart the Firewall,

If you are using RHEL / CentOS / Fedora Linux, the enter the following command.

# service iptables stop
# service iptables start
# service iptables restart

List out all of the active iptables rules with verbose

 iptables -n -L -v

List out all of the active iptables rules with numeric lines and verbose

iptables -n -L -v –line-numbers

Print out all of the active iptables rules

iptables -S

List Rules as Tables for INPUT chain

iptables -L INPUT

Print all of the rule specifications in the INPUT chain

iptables -S INPUT

Show Packet Counts and Aggregate Size

 iptables -L INPUT -v

To display INPUT or OUTPUT chain rules with numeric lines and verbose

 iptables -L INPUT -n -v
    iptables -L OUTPUT -n -v --line-numbers

Delete Rule by Chain and Number

iptables -D INPUT 10

Delete Rule by Specification

  iptables -D INPUT -m conntrack --ctstate INVALID -j DROP

Flush All Rules, Delete All Chains, and Accept All

 iptables -P INPUT ACCEPT
    iptables -P FORWARD ACCEPT
    iptables -P OUTPUT ACCEPT
iptables -t nat -F
iptables -t mangle -F
iptables -F
iptables -X
    Flush All Chains
    iptables -F
    Flush a Single Chain
    iptables -F INPUT

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ທ່ານສາມາດເອົາໄປໃຊ້ສຳລັບການຂຽນປ້ອງກັນຊ່ອງໂຫວ່ໃນ web ຕ່າງໆ ໂດຍ OWASP
ຕາມລິ້ງລຸ່ມນີ້:
https://github.com/O … e/master/cheatsheets

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ມີຂັ້ນຕອນດັ່ງນີ້:

1. ເລືອກ Policies > Groups.
2. ໃນ action ເລືອກ add
3.ໃສ່ຄຳວ່າ list_domain ໃນຫ້ອງ Name ສ່ວນໃນຫ້ອງ comment ປະຫວ່າງເປົາ ແລ້ວກົດ Submit Query
4. ກັບຄືນມາລາຍການ ແລ້ວເລືອກ list_domain>Action>Change>ຫ້ອງ Disabled ເລືອກເປັນ no >Submit Query ແລ້ວກັບຄືນ
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5. ເລືອກ list_domain>Action>Add ໃຫ້ໃສ່ຂໍ້ມູນ Name= @domain.com >Submit Query>Back to group #domain ແມ່ນໝາຍເຖິງໂດເມນຂອງທ່ານ
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ມີຂັ້ນຕອນຕິດຕັ້ງດັ່ງນີ້:

1. ເປີດໃຫ້ Policyd ທຳງານ

su - zimbra
zmprov ms `zmhostname` +zimbraServiceInstalled cbpolicyd +zimbraServiceEnabled cbpolicyd
cd       
exit

2.ເປີດໃຊ້ Policyd WebUI ດ້ວຍຜູ້ໃຊ້ root

cd /opt/zimbra/httpd/htdocs/ && ln -s ../../cbpolicyd/share/webui

ຈາກນັ້ນໄປແກ້ໄຂໄຟລ໌ /opt/zimbra/cbpolicyd/share/webui/includes/config.php ແລ້ວເອົາເຄື່ອງໝາຍ “#” ໃສ່ທາງໜ້າ $DB_DSN ແລ້ວເພີ່ມອັນໃໝ່ໃສ່ກ່ອນ $DB_USER ດ້ວຍຂໍ້ມູນລຸ່ມນີ້.
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ຖ້າໃຊ້ຮຸ່ນ 8.5 ຂຶ້ນມາເຮັດຕາມຂັ້ນຕອນນີ້ໄດ້:
1. ເຂົ້າໃຊ້ຜູ້ໃຊ້ zimbra

su - zimbra
zmprov mcf zimbraMtaSmtpdSenderLoginMaps proxy:ldap:/opt/zimbra/conf/ldap-slm.cf +zimbraMtaSmtpdSenderRestrictions reject_authenticated_sender_login_mismatch

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ເປັນການປ້ອງກັນການສົ່ງເມວທີ່ບໍ່ໄດ້ມີການລັອກອິນກ່ອນ ຊຶ່ງມີຂັ້ນຕອນດັ່ງນີ້:
1. ກວດເບິ່ງ zimbraMtaSmtpdRejectUnlistedSender ແລະ zimbraMtaSmtpdRejectUnlistedRecipient ໄດ້ເປີດໃຊ້ໃນ zimbra mta?

zmprov gacf | egrep zimbraMtaSmtpdRejectUnlistedSender
zmprov gacf | egrep zimbraMtaSmtpdRejectUnlistedRecipient

ຖ້າຜົນຮັບອອກມາເປັນແບບນີ້ ແມ່ນຍັງບໍ່ໄດ້ເປີດໃຊ້
zimbraMtaSmtpdRejectUnlistedSender: no
zimbraMtaSmtpdRejectUnlistedRecipient: no

2. ເປີດໃຊ້ງານດ້ວຍຄຳສັ່ງ

zmprov mcf zimbraMtaSmtpdRejectUnlistedRecipient yes
zmprov mcf zimbraMtaSmtpdRejectUnlistedSender yes

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Image does not exist: https://cdn.ttgtmedia.com/ITKE/uploads/blogs.dir/25/files/2007/11/test-1.gif

1. ເປີດ command prompt.
ຕອນນີ້ ທ່ານສາມາດເຊື່ອມຕໍ່ ດ້ວຍ ໂປຣແກຣທ telnet ຕາມຄຳສັ່ດັ່ງນີ້:

 telnet example.com 25

2. ພີມ ehlo example.com example.com ເປັນໂດເມນຕົວຢ່າງໃນບົດຄວາມນີ້

ehlo example.com

3. ພີມ mail from: [email protected]:

mail from: [email protected]

4. ພີມ rcpt to: [email protected], [email protected] (ອີເມວປາຍທາງ):

 rcpt to: [email protected], [email protected]

5. ຂຽນເນື້ອໃນອີເມວໃຫ້ພີມ data, ຕາມດ້ວຍ subject ແລະ ຂໍ່້ຄວາມສຸດດ້ວຍເຄື່ອງໝາຍ . (ຈ້ຳເມັດ)
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