diff --git a/Linux-and-BSD-firewalls-cheat-sheet.adoc b/Linux-and-BSD-firewalls-cheat-sheet.adoc
index 31b3ad7..e31703f 100644
--- a/Linux-and-BSD-firewalls-cheat-sheet.adoc
+++ b/Linux-and-BSD-firewalls-cheat-sheet.adoc
@@ -83,7 +83,7 @@ v1.0, 2020-09-01
 |Parse security rules stored in a file without installing them (dry run).
 
 |*pass in quick on egress from 62.13.77.141 to any*
-| 'Quick' rule (means allows this traffic on all interfaces, otherwise we would need 2nd rule allowing this traffic in _outgoing_ direction on egress interface) to allow incoming ANY port/protocol with the source being `62.13.77.141` and destination being ANY IP address behind the PF firewall. NOTE: here, `egress` is not a direction, but a group name to which the interface in question (`em0`) belongs to. In OpenBSD you set it in a file `/etc/hostname.em0: group egress`. 
+| 'Quick' rule (means allows this traffic on all interfaces, otherwise we would need 2nd rule allowing this traffic in _outgoing_ direction on egress interface) to allow incoming ANY port/protocol with the source being `62.13.77.141` and destination being ANY IP address behind the PF firewall. NOTE: here, `egress` is not a direction, but a group name to which the interface in question (`em0`) belongs to. In OpenBSD you set it in a file `/etc/hostname.em0: group egress` or in real-time with the command: `ifconfig em0 group egress`. 
 
 
 
diff --git a/Linux-and-BSD-firewalls-cheat-sheet.pdf b/Linux-and-BSD-firewalls-cheat-sheet.pdf
index 9396294..c4edadb 100644
--- a/Linux-and-BSD-firewalls-cheat-sheet.pdf
+++ b/Linux-and-BSD-firewalls-cheat-sheet.pdf
@@ -5,8 +5,8 @@
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 /Producer (Yuri Slobodyanyuk)
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