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38 lines
1.1 KiB
38 lines
1.1 KiB
6 years ago
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Dev servers:
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ocadev2 ocadev3 ocadev4
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AO Dev servers:
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once-dev1
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# On development servers, add this to firewall rules to block
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# sending/receiving of mails.
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# Block outgoing traffic to email ports...
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# SMTP, POP, IMAP, plus encrypted ports
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# Be sure to put *before* this line in the firewall rules:
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# -A OUTPUT -j ACCEPT
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#
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# Allow only communications to localhost on port 25 ( -s IP )
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-A OUTPUT -p tcp --dport 25 -o lo -d 127.0.0.1 -j ACCEPT
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# Allow only communications to localhost on IMAP port 993 ( -s IP )
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-A OUTPUT -p tcp --dport 993 -o lo -d 127.0.0.1 -j ACCEPT
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# Block SMTP
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-A OUTPUT -p tcp --dport 25 -j REJECT
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-A INPUT -p tcp --dport 25 -j REJECT
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# Block POP
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-A OUTPUT -p tcp --dport 110 -j REJECT
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-A INPUT -p tcp --dport 110 -j REJECT
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# Block IMAP
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-A OUTPUT -p tcp --dport 143 -j REJECT
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-A INPUT -p tcp --dport 143 -j REJECT
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# Block Email Submission
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-A OUTPUT -p tcp --dport 587 -j REJECT
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-A INPUT -p tcp --dport 587 -j REJECT
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# Block encrypted IMAPS
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-A OUTPUT -p tcp --dport 993 -j REJECT
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-A INPUT -p tcp --dport 993 -j REJECT
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# Block encrypted POP
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-A OUTPUT -p tcp --dport 995 -j REJECT
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-A INPUT -p tcp --dport 995 -j REJECT
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